CN104386732A - Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent - Google Patents
Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent Download PDFInfo
- Publication number
- CN104386732A CN104386732A CN201410653252.4A CN201410653252A CN104386732A CN 104386732 A CN104386732 A CN 104386732A CN 201410653252 A CN201410653252 A CN 201410653252A CN 104386732 A CN104386732 A CN 104386732A
- Authority
- CN
- China
- Prior art keywords
- cerium
- solution
- absorption
- separant
- carbon black
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for preparing nano cerium oxide. The method is characterized by comprising the following steps: preparing a soluble cerium solution, adding a precipitator and an isolation dispersing agent into the cerium solution so that the solution has a chemical reaction to generate insoluble cerium precipitate, separating out the cerium precipitate from the solution and dispersing the cerium precipitate; adding an adsorption and isolation agent into the precipitating process so as to adsorb cerium compound particles generated through precipitation; washing the original negative ions out of the solvent and the solution, and filtering, drying and calcining the precipitate intermediate, thereby obtaining the final product, wherein the precipitator can be ammonium bicarbonate, oxalic acid, ammonia water, urea or the like; and calcining refers to high-temperature calcining. According to the process disclosed by the invention, the method is high in cerium recovery rate, uniform in product particle size, narrow in distribution, high in dispersing property, high in energy efficiency and low in cost.
Description
Technical field
The present invention relates to a kind of method and system adopting absorption separant to prepare nano-cerium oxide, be novel environment-friendly process, environment friendly is strong, belongs to metallurgical technology field.
Background technology
Nanoparticle, with character and potential application prospects such as the light of its uniqueness, sound, electricity, magnetic, heat, catalysis, mechanics, chemically reactives, becomes one of focus of Materials science research.Nano-cerium oxide (CeO
2) as the important a member in rare earth material family, in polishing material, light-storing material, electronic material, catalyzer, uv-absorbing, special glass, high technology ceramics, oxygen pump, fuel cell etc., there are many application.Nano Ce O
2be a kind of rare earth deep processed product of high added value, there is many new properties, novelty teabag, be widely used in the fields such as pottery, luminescent material, catalyzer, fuel cell and polishing.
The development of new and high technology is to nano Ce O
2requirement more and more higher, wherein the most basic requirement is fine size, purity is high, specific surface area is large, activity is high and the profile of particle and homogeneity, and they and synthetic method and preparation process closely related.
But, about nano Ce O
2preparation method and technology, all immature at present, all do not realize industrialization, be mostly in laboratory stage, this just greatly limit nano Ce O
2production, application and development.Nano Ce O
2preparation method have a variety of, generally different according to the condition of sintetics, roughly preparation method can be divided into vapor phase process, solid phase method and liquid phase method three major types.
Liquid phase method possesses reaction conditions gentleness, is easy to the advantages such as control, and the powder simultaneously prepared than solid phase method is again pure, it is few to reunite, and being easy to realize suitability for industrialized production, is prepare the most frequently used method of nanoparticle at present.
But liquid phase method ubiquitous particle agglomeration phenomenon, monodispersity is poor, granularity is uneven and the problem such as unstable properties, still affects the use properties of nano-cerium oxide.
Therefore, research and develop that a kind of cost is low, technique is simple and the preparation method of the nano ceric oxide of excellent performance can be obtained, solve the technical bottleneck that nano-cerium oxide is dry, roasting is reunited, become the key determining cerium oxide industrialized development.
Summary of the invention
The object of the invention is to provide a kind of method and system adopting absorption separant to prepare nano-cerium oxide, it can solve the technical bottleneck that nano-cerium oxide preparation technology easily reunites in dry, roasting, this technique cerium rate of recovery is high, product cut size is even, narrowly distributing, good dispersity, high energy efficiency, low cost.
For this reason, according to an aspect of the present invention, provide a kind of method preparing nano-cerium oxide, it is characterized in that, cerium compound particle in adsorption precipitation process, increase the particle diameter of suspended particles, accelerate the settling velocity of cerium compound, improve filterability, reduce the face that contacts with each other of cerium precipitation, prevent the interparticle agglomeration of cerium compound, grow up, reduce the quantity of hydrogen bond, thus suppress the drying in nano-cerium oxide preparation process, roasting reunites.
Preferably, in cerium solution alkaline chemical precipitation process, add a kind of high adsorption capacity and burn as much as possible completely after material or Thorough combustion remaining a small amount of ashes dissolve in acid and have the powder of certain adsorptive power, with the cerium compound particle in adsorption precipitation process.
Preferably, described material is dispersion agent, adopts absorption separant.Preferably, described absorption separant is solid powder, and/or described absorption separant is carbon black, carbon dust and/or starch.
Preferably, absorption separant is adopted to be adsorbed on the surface by cerium compound.
Preferably, in cerous nitrate or solution of cerium chloride by oxidation, add carbon black, cerous nitrate or Cerium II Chloride and carbon black mass ratio are 1:0.10-0.30 (preferred 1:0.15-0.25), carbon black are infiltrated fully mix with cerous nitrate or solution of cerium chloride by oxidation by stirring; By ammoniacal liquor (preferred concentration is 25 ~ 28%) dilution 3-5 doubly (preferably 4 times), ammoniacal liquor is added to equably in the mixed solution of carbon black and cerous nitrate or Cerium II Chloride, keep stirring velocity, when pH value is 9 ~ 10, stop adding ammoniacal liquor, then Keep agitation 0.5-1.5 hour (1 hour); Solid mixture is washed till neutrality, dry under 75-85 DEG C (preferably 80 DEG C) after filtration, by dried presoma roasting 3.5-4.5 hour (4 hours) under 700-800 DEG C of (preferably 750 DEG C) condition, guarantee that carbon black reacts completely, products obtained therefrom uniform particle sizes (being mostly about 45-65nm).
Preferably, in cerous nitrate solution, add carbon black, cerous nitrate and carbon black mass ratio are 1:0.25, carbon black is infiltrated and fully mixes with cerous nitrate solution; The ammoniacal liquor of 25 ~ 28% is diluted 4 times, ammoniacal liquor is added to equably in carbon black and cerous nitrate mixed solution, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour; Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, by the roasting 4 hours under 750 DEG C of conditions of dried presoma, guarantee that carbon black reacts completely, products obtained therefrom uniform particle sizes (being mostly about 45nm).
Preferably, in cerous nitrate solution, add carbon black, cerous nitrate and carbon black mass ratio are 1:0.15, carbon black is infiltrated and fully mixes with cerous nitrate solution; The ammoniacal liquor of 25 ~ 28% is diluted 4 times, ammoniacal liquor is added to equably in carbon black and cerous nitrate mixed solution, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour; Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, by the roasting 4 hours under 750 DEG C of conditions of dried presoma, guarantee that carbon black reacts completely, products obtained therefrom uniform particle sizes (being all about 65nm).
Preferably, in solution of cerium chloride by oxidation, add carbon black, Cerium II Chloride and carbon black mass ratio are 1:0.25, carbon black is infiltrated and fully mixes with solution of cerium chloride by oxidation; The ammoniacal liquor of 25 ~ 28% is diluted 4 times, ammoniacal liquor is added to equably in carbon black and Cerium II Chloride mixed solution, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour; Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, by the roasting 4 hours under 750 DEG C of conditions of dried presoma, guarantee that carbon black reacts completely, products obtained therefrom uniform particle sizes (being all about 50nm).
According to an aspect of the present invention, provide a kind of system preparing nano-cerium oxide, it is characterized in that, comprising: cerium solution preparation device, it has solution chemistry temperature of reaction controller, precipitation agent adder and isolation dispersion agent adder; After cerium solution preparation device, be provided with precipitation intermediate filtration unit, drying installation, high-temperature roasting device and product successively and hold and packing plant.
Preferably, the proportioning controller of cerous nitrate or Cerium II Chloride and absorption separant, fully mixing agitator is also comprised.
Preferably, precipitation agent dilution controller, pH value controller, Keep agitation time controller, bake out temperature controller, maturing temperature controller, roasting time controller, scanning electron microscope for testing product particle diameter is also comprised.
According to the present invention, add in precipitation agent process at cerium solution, add a kind of high adsorption capacity and burn as much as possible and adsorb separant completely, as solid powder such as carbon black, carbon dust, starch, absorption separant by cerium precipitation adsorption from the teeth outwards, can accelerate the speed of sedimentation, effectively can reduce again the face that contacts with each other of cerium compound, significantly reduce the quantity of hydrogen bond, thus solve the technical bottleneck of nano-cerium oxide drying reunion.
According to the present invention, the effect utilizing the cerium compound particle in absorption separant adsorption precipitation process is apparent, and create unforeseeable technique effect, such as, increase the particle diameter of suspended particles, accelerate the settling velocity of cerium compound, solve in conventional nano cerium oxide preparation technology and filter difficult problem; Absorption separant effectively can reduce again the face that contacts with each other of cerium compound, significantly reduces the quantity of hydrogen bond, thus solves technical bottleneck that is dry in nano-cerium oxide preparation process, roasting reunion.
Product prepared in accordance with the present invention, pattern is spherical in shape, uniform particle sizes, narrowly distributing, reunion constant are little.By the ratio of adjustment absorption separant add-on, nano-cerium oxide particle diameter is controlled between 20 ~ 80nm.
Accompanying drawing explanation
Fig. 1 is the process principle figure adopting absorption separant to prepare nano-cerium oxide.
Fig. 2 is the structure principle chart adopting absorption separant to prepare the system of nano-cerium oxide.
Embodiment
Liquid phase method mainly passes through the condition controlling liquid-phase chemical reaction in liquid-phase system, as reactant concn, temperature of reaction and time, stirring velocity, hydrolysis rate, co-precipitation etc. form the method for presoma.
Liquid phase method is between vapor phase process and solid phase method, compared with vapor phase process, liquid phase method have equipment simple, without the need to advantages such as the harsh physical conditions such as high vacuum, easily amplification, the powder simultaneously prepared than solid phase method is again pure, it is few to reunite, easily realizing suitability for industrialized production, is prepare the most frequently used method of nanoparticle at present.
Liquid phase method mainly contains the precipitator method, sol-gel method, hydrothermal method, microemulsion method, electrochemical process etc.
The present invention is based on the precipitator method, precipitation agent (bicarbonate of ammonia, oxalic acid, ammoniacal liquor, urea etc.) is added in solubility cerium solution, make solution generation chemical reaction at a certain temperature, form insoluble cerium compound to separate out from solution, negatively charged ion original in solvent and solution is washed away, intermediate will be precipitated again through super-dry, calcining, thus prepare nano-powder.
Because the precipitator method can prepare the nano powder that particle diameter is little, narrowly distributing, purity are high, and product comprehensive cost is low, technique simple, easily realizes suitability for industrialized production.But this method is unstable, product agglomeration is serious, in preparation technology, in the reunion that precipitin reaction, drying, calcining three phases can cause in various degree.
Absorption separant is with the addition of in precipitation process of the present invention, to adsorb cerium precipitation particles, thus increase the particle diameter of suspended particles, accelerate the settling velocity of cerium compound, improve filterability, reduce the face that contacts with each other of cerium compound, prevent the interparticle agglomeration of cerium compound, grow up, reduce the quantity of hydrogen bond, thus suppress the drying in nano-cerium oxide preparation process, roasting reunites.Simple process is as follows: cerium solution preparation-> isolates dispersant-> and precipitates-> filtration and drying-> high-temperature roasting-> nano-cerium oxide product.
As shown in Figure 1, ultimate principle of the present invention is, utilize absorption well can be adsorbed in its surface by the cerium compound produced in precipitation process by clean-burning sorbent material again, effectively slow down contacting with each other of cerium compound in the precipitator method, greatly reduce the contact surface between cerium compound, decrease the quantity of hydrogen bond, thus suppress the precipitation in nano-cerium oxide preparation process, dry reunion.In addition, in roasting process, cerium compound decomposition temperature lower (being not more than 300 DEG C), absorption separant Thorough combustion temperature is greater than 600 DEG C, in temperature-rise period (before sorbent material burning), cerium compound decomposes generation nano-cerium oxide particle at adsorbent surface, will form room when adsorbing separant Thorough combustion, cause and generate nano-cerium oxide good product dispersibility, and uniform particle sizes, narrowly distributing.
The present invention is pure by the powder of Liquid preparation methods, be easy to realize industrialized advantage, the traditional precipitation process of further improvement, adopt the way adding dispersion agent, develop the novel process adding a small amount of absorption separant and prepare nano-cerium oxide, capture the technical bottleneck that Traditional liquid phase method nano-cerium oxide preparation technology easily reunites in dry, roasting.
By adding absorption separant, the cerium compound particle generated in adsorption precipitation process, significantly decrease the contact surface between cerium compound particle, and then effectively prevent the interparticle agglomeration of cerium compound, grow up, make the nano-cerium oxide precursor particle particle diameter of acquisition little and even, narrow, the drying of distributing is not reunited.
When roasting generates, the oxidation of absorption separant generates CO
2and H
2o gas, after the burning completely of absorption separant, produces room disappearance, nano Ce O
2between presoma and absorption separant, adsorption bond disappears, and presoma Contact face is little again, therefore it is loose to generate powder, and cerium compound is oxidized to CeO in addition
2time particle diameter reduce further, cause CeO
2particle contact face continues to reduce, CeO when efficiently solving presoma roasting
2the easy agglomeration traits of particle, makes to generate nano Ce O
2product is fluffy, uniform particle sizes, good dispersity, specific surface are large.
By being metered into ratio, the roasting condition of absorption separant, the particle diameter of nano-cerium oxide product can be controlled.
The invention solves the problem that Liquid preparation methods nano-cerium oxide is easily reunited, have developed size tunable, good, the even-grained nano-cerium oxide new preparation process of monodispersity.
This process resource comprehensive utilization ratio is high, without topsoil, without water pollution, environmental friendliness.Qualified discharge after the recyclable ammonium nitrate wherein of the presoma wash water produced in presoma production process; The CO that roasting process produces
2waste gas absorbs after process through acid waste gas absorption tower milk of lime and gets final product qualified discharge; Technique produces without solid waste.
After absorption separant should select energy perfect combustion or Thorough combustion, remaining a small amount of ashes dissolves in acid and has the powder of certain adsorptive power, and absorption separant made by the high-quality carbon black of example selection energy perfect combustion.
As shown in Figure 2, the system preparing nano-cerium oxide according to the present invention comprises: cerium solution preparation device 10, and it has solution chemistry temperature of reaction controller 12, precipitation agent adder 11 and isolation dispersion agent adder 12; After cerium solution preparation device 10, be provided with precipitation intermediate filtration unit 20, drying installation 30, high-temperature roasting device 40 and product successively and hold and packing plant 50.
Preferably, the proportioning controller 14 of cerous nitrate or Cerium II Chloride and absorption separant, fully mixing agitator 18 is also comprised.Preferably, precipitation agent dilution controller 15, pH value controller 16, Keep agitation time controller 17, bake out temperature controller 31, maturing temperature controller 41, roasting time controller 42, scanning electron microscope 51 for testing product particle diameter is also comprised.
embodiment 1
Get 0.5mol/L cerous nitrate solution 500mL, add carbon black 24.25g and make absorption separant, cerous nitrate and carbon black mass ratio are (1:0.25), moderate-speed mixer 30min, carbon black is infiltrated and fully mixes with cerous nitrate solution.The ammoniacal liquor of 25 ~ 28% is diluted 4 times, with peristaltic pump, ammoniacal liquor is added in carbon black and cerous nitrate mixed solution equably, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour.Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, dried presoma to be placed in retort furnace under 750 DEG C of conditions roasting 4 hours, guarantee that carbon black reacts completely, using scanning electron microscope testing product, products obtained therefrom uniform particle sizes after cooling, is mostly about 45nm.
embodiment 2
Get 0.5mol/L cerous nitrate solution 500mL, add carbon black 14.55g and make absorption separant, cerous nitrate and carbon black mass ratio are (1:0.15), moderate-speed mixer 30min, carbon black is infiltrated and fully mixes with cerous nitrate solution.The ammoniacal liquor of 25 ~ 28% is diluted 4 times, with peristaltic pump, ammoniacal liquor is added in carbon black and cerous nitrate mixed solution equably, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour.Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, dried presoma to be placed in retort furnace under 750 DEG C of conditions roasting 4 hours, guarantee that carbon black reacts completely, using scanning electron microscope testing product, products obtained therefrom uniform particle sizes after cooling, is mostly about 65nm.
embodiment 3
Get 0.5mol/L solution of cerium chloride by oxidation 500mL, add carbon black 15.40g and make absorption separant, Cerium II Chloride and carbon black mass ratio are (1:0.25), moderate-speed mixer 30min, carbon black is infiltrated and fully mixes with solution of cerium chloride by oxidation.The ammoniacal liquor of 25 ~ 28% is diluted 4 times, with peristaltic pump, ammoniacal liquor is added in carbon black and Cerium II Chloride mixed solution equably, keep stirring velocity, when pH value is 9 ~ 10, stop the adding of ammoniacal liquor, then Keep agitation 1 hour.Solid mixture is washed till neutrality, dries at 80 DEG C after filtration, dried presoma to be placed in retort furnace under 750 DEG C of conditions roasting 4 hours, guarantee that carbon black reacts completely, using scanning electron microscope testing product, products obtained therefrom uniform particle sizes after cooling, is mostly about 50nm.
Embodiment 3 adopts Cerium II Chloride, mainly illustrates and selects different cerium solution, can obtain nano-cerium oxide product equally.
embodiment 4
Get 0.5mol/L solution of cerium chloride by oxidation 500mL, add carbon black 15.40g and make absorption separant, Cerium II Chloride and carbon black mass ratio are (1:0.25), moderate-speed mixer 30min, carbon black is infiltrated and fully mixes with solution of cerium chloride by oxidation.By metering than 1.1 times of accurate weighing precipitation agent ammonium oxalate (39.1g), be dissolved in appropriate deionized water, with peristaltic pump, ammonium oxalate solution be added in carbon black and Cerium II Chloride mixed solution equably, keep stirring velocity, question response completely after, then Keep agitation 1 hour.Educt in solid mixture is washed to the greatest extent, dry at 80 DEG C after filtration, dried presoma to be placed in retort furnace under 750 DEG C of conditions roasting 4 hours, guarantee that carbon black reacts completely, using scanning electron microscope testing product, products obtained therefrom uniform particle sizes after cooling, is about 80nm.
In nano-cerium oxide preparation process, it is secondary that starch consumption and effect are compared with carbon black, in other embodiment of the present invention, and can without starch.
Claims (10)
1. prepare the method for nano-cerium oxide for one kind, it is characterized in that, preparation solubility cerium solution, precipitation agent (bicarbonate of ammonia, oxalic acid, ammoniacal liquor, urea etc.) and isolation dispersion agent is added in cerium solution, make solution generation chemical reaction, formed insoluble cerium precipitation, and from solution separate out, dispersion; Absorption separant is added, the cerium compound particle generated with adsorption precipitation in precipitation process; Washed away by negatively charged ion original in solvent and solution, to precipitating, intermediate filters, dry, calcining (high-temperature roasting), thus prepares the finished product.
2. the method for claim 1, is characterized in that, utilizing that absorption is good again can clean-burning absorption separant, by the cerium compound absorption that produces in precipitation process in its surface; And/or, in roasting process, cerium compound decomposition temperature lower (being not more than 300 DEG C), absorption separant Thorough combustion temperature is greater than 600 DEG C, in temperature-rise period (before sorbent material burning), cerium compound decomposes generation nano-cerium oxide particle at adsorbent surface, will form room when adsorbing separant Thorough combustion, cause and generate nano-cerium oxide good product dispersibility, and uniform particle sizes, narrowly distributing.
3. the method for claim 1, it is characterized in that, add in precipitation agent process at cerium solution, add high adsorption capacity and burn as much as possible completely after material or Thorough combustion remaining a small amount of ashes dissolve in acid and have the powder of certain adsorptive power, with the cerium compound particle in adsorption precipitation process.
4. method as claimed in claim 3, it is characterized in that, described material is dispersion agent, adopts absorption separant.
5. method as claimed in claim 4, it is characterized in that, described absorption separant is solid powder, and/or described absorption separant is carbon black, carbon dust and/or starch (preferably, without starch).
6. the method for claim 1, it is characterized in that, carbon black is added in cerous nitrate or solution of cerium chloride by oxidation, cerous nitrate or Cerium II Chloride and carbon black mass ratio are 1:0.10-0.30 (preferred 1:0.15-0.25), carbon black are infiltrated fully mix with cerous nitrate or solution of cerium chloride by oxidation by stirring; By ammoniacal liquor (preferred concentration is 25 ~ 28%) dilution 3-5 doubly (preferably 4 times), ammoniacal liquor is added to equably in the mixed solution of carbon black and cerous nitrate or Cerium II Chloride, keep stirring velocity, when pH value is 9 ~ 10, stop adding ammoniacal liquor, then Keep agitation 0.5-1.5 hour (1 hour); Solid mixture is washed till neutrality, dry under 75-85 DEG C (preferably 80 DEG C) after filtration, by dried presoma roasting 3.5-4.5 hour (4 hours) under 700-800 DEG C of (preferably 750 DEG C) condition, guarantee that carbon black reacts completely, products obtained therefrom uniform particle sizes (being mostly about 45-65nm).
7. method as claimed in claim 6, is characterized in that, make absorption separant with carbon black, make precipitation agent with ammonium oxalate, using scanning electron microscope testing product, products obtained therefrom uniform particle sizes after cooling, is about 80nm.
8. prepare a system for nano-cerium oxide, it is characterized in that, comprising: cerium solution preparation device, it has solution chemistry temperature of reaction controller, precipitation agent adder and isolation dispersion agent adder; After cerium solution preparation device, be provided with precipitation intermediate filtration unit, drying installation, high-temperature roasting device and product successively and hold and packing plant.
9. system as claimed in claim 8, is characterized in that, also comprises the proportioning controller of cerous nitrate or Cerium II Chloride and absorption separant, fully mixing agitator.
10. system as claimed in claim 8, it is characterized in that, also comprise precipitation agent dilution controller, pH value controller, Keep agitation time controller, bake out temperature controller, maturing temperature controller, roasting time controller, scanning electron microscope for testing product particle diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653252.4A CN104386732A (en) | 2014-11-17 | 2014-11-17 | Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653252.4A CN104386732A (en) | 2014-11-17 | 2014-11-17 | Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104386732A true CN104386732A (en) | 2015-03-04 |
Family
ID=52604714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410653252.4A Pending CN104386732A (en) | 2014-11-17 | 2014-11-17 | Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104386732A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115564A (en) * | 2017-03-09 | 2017-09-01 | 温州医科大学附属口腔医院 | A kind of method for preparing the pure titanium implant material for carrying cerium oxide nano particle functional film layer |
| CN108178180A (en) * | 2018-03-08 | 2018-06-19 | 蒋央芳 | A kind of preparation method of Large ratio surface cerium oxide |
| CN115058199A (en) * | 2022-08-18 | 2022-09-16 | 广东粤港澳大湾区黄埔材料研究院 | High-dispersion ball-like nano cerium oxide polishing solution and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61122121A (en) * | 1984-11-19 | 1986-06-10 | Mitsubishi Chem Ind Ltd | Production of rare earth metal oxide powder |
| CN102161498A (en) * | 2011-06-03 | 2011-08-24 | 北京化工大学 | Preparation method of uniformly dispersed nano lanthanum oxide |
| CN103754921A (en) * | 2013-12-21 | 2014-04-30 | 安徽大学 | Preparation method of monodisperse cerium oxide loose nanospheres |
| CN204173928U (en) * | 2014-11-17 | 2015-02-25 | 赣州有色冶金研究所 | A kind of system adopting absorption separant to prepare nano-cerium oxide |
-
2014
- 2014-11-17 CN CN201410653252.4A patent/CN104386732A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61122121A (en) * | 1984-11-19 | 1986-06-10 | Mitsubishi Chem Ind Ltd | Production of rare earth metal oxide powder |
| CN102161498A (en) * | 2011-06-03 | 2011-08-24 | 北京化工大学 | Preparation method of uniformly dispersed nano lanthanum oxide |
| CN103754921A (en) * | 2013-12-21 | 2014-04-30 | 安徽大学 | Preparation method of monodisperse cerium oxide loose nanospheres |
| CN204173928U (en) * | 2014-11-17 | 2015-02-25 | 赣州有色冶金研究所 | A kind of system adopting absorption separant to prepare nano-cerium oxide |
Non-Patent Citations (2)
| Title |
|---|
| 文瑾等: "淀粉辅助合成二氧化铈纳米晶及其光学性能研究", 《化工新型材料》 * |
| 郭贵宝等: "碳吸附燃烧法制备CeO2 纳米粒子及表征"，", 《包头钢铁学院学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115564A (en) * | 2017-03-09 | 2017-09-01 | 温州医科大学附属口腔医院 | A kind of method for preparing the pure titanium implant material for carrying cerium oxide nano particle functional film layer |
| CN108178180A (en) * | 2018-03-08 | 2018-06-19 | 蒋央芳 | A kind of preparation method of Large ratio surface cerium oxide |
| CN108178180B (en) * | 2018-03-08 | 2019-11-22 | 蒋央芳 | A kind of preparation method of Large ratio surface cerium oxide |
| CN115058199A (en) * | 2022-08-18 | 2022-09-16 | 广东粤港澳大湾区黄埔材料研究院 | High-dispersion ball-like nano cerium oxide polishing solution and application thereof |
| CN115058199B (en) * | 2022-08-18 | 2022-11-15 | 广东粤港澳大湾区黄埔材料研究院 | High-dispersion ball-like nano cerium oxide polishing solution and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108373175A (en) | Aluminium doped cobaltic-cobaltous oxide and its preparation method and application | |
| CN103466702B (en) | Method for preparing porous bismuth oxide nano-material without template | |
| CN109019656B (en) | Method for producing nano rare earth oxide powder | |
| CN103407969B (en) | A kind of three-dimensional ordered macroporous-gas-phase permeation-precipitation method of mesopore metal oxide or composite oxides and products obtained therefrom | |
| CN101407330B (en) | Method of preparing cerium oxide nano-rod | |
| CN1080244C (en) | Spheroidally agglomerated basic cobalt (II) carbonate and spheroidally agglomerated cobalt (II) hydroxide, process for their production and their use | |
| CN109678193B (en) | Preparation method of nano cerium oxide particles | |
| CN104828869B (en) | A kind of sodium manganese oxide micropowder and preparation method thereof | |
| CN109772465A (en) | A kind of preparation method of water solubility carbon dots modified perovskite type catalysis material | |
| CN106745170B (en) | A kind of cobalt doped cerium oxide nano materials of laminated structure and its preparation and application | |
| CN103769045B (en) | A kind of preparation method of fly ash base high-performance adsorbing material | |
| CN102849774A (en) | Method for preparing nanometer cerium oxide by hydrothermal method | |
| CN104386732A (en) | Method and system for preparing nano cerium oxide by adopting adsorption and isolation agent | |
| CN109665525A (en) | A kind of preparation method of " dumbbell shape " iron nitrogen codope porous carbon | |
| CN115501853B (en) | Multistage pore structure lanthanum-based hydroxide adsorption material, preparation method and application | |
| CN105600833A (en) | Spherical mesoporous iron oxide and preparation method thereof | |
| CN103933957B (en) | Porous monocrystalline nano titanium dioxide photocatalyst that a kind of high crystallization, size are controlled, high-energy surface exposes and its preparation method and application | |
| CN103303980A (en) | Method for preparing nano iron oxide by lignosulfonate template process | |
| CN112142097A (en) | Cadmium stannate trihydrate, and preparation method and application thereof | |
| CN109529903B (en) | Method for preparing nickel-nitrogen co-doped carbon material by using hydrotalcite as template | |
| CN105107497A (en) | Gold nano catalyst with multilevel structure and multiple packages and synthetic method thereof | |
| CN104941573A (en) | Manganite-loaded adsorbent and preparation method thereof as well as application of manganite-loaded adsorbent in treating chemical nickel plating waste liquid | |
| CN104310455A (en) | Preparation method of cerium oxide nanosheet | |
| CN103272630A (en) | Nickel-based catalyst taking yttrium-doped SBA-15 as carrier, and preparation method and application thereof | |
| CN107961811B (en) | Supported catalyst for deeply degrading industrial dye wastewater and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |