JP2019064919A - Method and agent for transporting hydrogen - Google Patents

Abstract

To provide techniques for transporting hydrogen in which problems of energy loss and biological safety are mitigated.SOLUTION: Provided is an agent which is used when transporting hydrogen from location A to location B. This agent is a compound represented by general formula [I] in the figure.SELECTED DRAWING: Figure 1

Description

  The present invention relates to hydrogen transport technology.

Currently, energy sources are being sought to replace fossil fuels. The reason is that fossil fuel has some problems. For example, reserves are limited. Fossil fuel basically has carbon (C). For this reason, when fossil fuel burns, CO ₂ is released. Large amounts of CO ₂ emissions cause adverse effects on the environment. Fossil fuel production areas are biased to specific areas. For this reason, there is a problem from a political point of view.

  Nuclear power generation has attracted attention as an alternative energy source for fossil fuels. In reality, a number of nuclear power plants have been built. However, there are problems with the treatment of radioactive waste generated at nuclear power plants.

  Solar power and wind power have recently attracted attention. In reality, many solar power plants and wind power plants were built. However, locations of solar power plants and wind power plants are limited. The location is often far from the place of consumption. For example, it is the ocean near Ogasawara, about 1000 Km from Tokyo.

  Transportation of power is a problem when generated remotely. It is a problem in the case of a power plant under conditions where the transmission line can not be installed. In order to solve this problem, a method was proposed to convert electricity into hydrogen and transport it. That is, the electrolysis of water is performed by the electric power generated by solar power generation or wind power generation. This produces hydrogen. The hydrogen is transported to the place of consumption. Even if hydrogen is burned, it only produces water. Therefore, the problem of environmental pollution is small.

  However, transport of hydrogen is difficult. It is difficult to transport hydrogen to transport crude oil in a crude oil tanker. The following points are pointed out as the reason. The hydrogen transport tank is required to have high pressure resistance. It is not easy to compress hydrogen. Because of this, the transportation cost is high.

In order to solve this kind of problem, Ichikawa (Hokkaido University) proposed a method using aromatic compounds. First, hydrogen is added to an aromatic compound (for example, toluene) (CH ₃ C ₆ H ₅ + 3H ₂ → CH ₃ C ₆ H ₁₁ ). This CH ₃ C ₆ H ₁₁ is transported to the place of consumption. This means that hydrogen has been transported. Hydrogen is taken out (desorbed) at the place of consumption. The extracted hydrogen is supplied to the fuel cell to generate power. A plant of such a system has been tried by Chiyoda Chemical Corporation. This means that hydrogen is transported and stored at normal temperature and pressure. Therefore, the above method is effective.

  However, problems remain with the above method. Heat is required for addition and removal of hydrogen. This causes energy loss. The aromatic compounds are harmful. Benzene can cause leukemia. Toluene can cause brain damage. Toluene (benzene) and water are separated. When the aromatic compound flows into the sea, an oil film is formed on the sea surface. This causes biological damage. The aromatic compound is highly volatile and has a risk of ignition.

Rajesh B. Biniwalea, S. Rayalua, S. Devottaa, and M. Ichikawab, Chemical Hydrades: A Solution to High Capacity Hydrogen Storage and Supply, International Journal of Hydrogen Energy, Volume 33, Issue 1, January 2008, Pages 360-365

Patent No. 5122178 Patent No. 5283665

  Therefore, the problem to be solved by the present invention is to solve the above-mentioned problems. In particular, it is an object of the present invention to solve the problems when toluene is used in hydrogen transport. For example, to provide a hydrogen transport technology with improved energy loss problems and biosafety problems.

  The inventors of the present invention have made intensive studies to solve the above-mentioned problems. As a result, it has come to be revealed that alkylbenzoquinone is suitable as a hydrogen transport agent (compound for adding and desorbing hydrogen (hydrogen carrier)). When an alkylbenzoquinone solution (the solvent is water or an organic solvent) is continuously flowed together with hydrogen gas into a column packed with an organic polysilane metal catalyst (for example, JGC Catalysts Chemical Co., Ltd.), the alkylhydroquinone solution is easily made It was obtained. The reaction [alkyl benzoquinone + hydrogen → alkyl hydroquinone] is utilized. The alkyl hydroquinone is supplied to the fuel cell to generate electricity.

  The present invention has been achieved based on the above findings.

The present invention is an agent used when hydrogen is transported from point A to point B,
The agent for hydrogen transport is proposed, which is a compound represented by the general formula [I].

The present invention is a method in which hydrogen is transported from point A to point B,
The method is
Hydrogen transport characterized in that the compound represented by the general formula [II] obtained by adding hydrogen to the compound represented by the general formula [I] is transported from point A to point B Suggest a method.

一般式［ＩＩ］

一般式［Ｉ］［ＩＩ］において、Ｒ^１，Ｒ^２，Ｒ^３，Ｒ^４は、Ｈ、炭化水素基、及び−ＳｉＲ^５（Ｒ^６）（Ｒ^７）の群の中から選ばれる何れかである。Ｒ^５，Ｒ^６，Ｒ^７は、Ｈ及び炭化水素基の群の中から選ばれる何れかである。Ｒ^１，Ｒ^２，Ｒ^３，Ｒ^４は、好ましくは、Ｈ及び炭化水素基の群の中から選ばれる何れかである。Ｒ^１，Ｒ^２，Ｒ^３，Ｒ^４の全てがＨの場合は除かれる。 General formula [I]

General formula [II]

In the general formula [I] [II], R ¹ , R ² , R ³ and R ⁴ are each selected from the group consisting of H, a hydrocarbon group, and -SiR ⁵ (R ⁶ ) (R ⁷ ) It is. R ⁵ , R ⁶ and R ⁷ are any one selected from H and a group of hydrocarbon groups. R ¹ , R ² , R ³ and R ⁴ are preferably any one selected from the group of H and hydrocarbon groups. When all of R ¹ , R ² , R ³ and R ⁴ are H, they are excluded.

  The hydrocarbon group is preferably a hydrocarbon group having 1 to 10 carbon atoms. More preferably, it is a C1-C8 hydrocarbon group. More preferably, it is a hydrocarbon group having 1 to 5 carbon atoms. The hydrocarbon group is preferably a chain hydrocarbon group. The hydrocarbon group is preferably an alkyl group.

The R ¹ , R ² , R ³ and R ⁴ may be the same or different. All of R ¹ , R ² , R ³ and R ⁴ may be the same. Some may be identical. Everything may be different. Preferably, at least one of R ¹ , R ² , R ³ and R ⁴ is a hydrocarbon group.

The R ⁵ , R ⁶ and R ⁷ may be the same or different. All of R ⁵ , R ⁶ and R ⁷ may be identical. Some may be identical. Everything may be different.

  The point A is, for example, a place where hydrogen obtained by the electrolyzer is stored. The point B is, for example, a place where hydrogen is consumed.

  The compound represented by the above general formula [I] is preferably 2-methyl-1,4-benzoquinone (toruquinone), 2,6-dimethyl-1,4-benzoquinone, and tetramethyl-1,4-benzoquinone Or one or more selected from the group consisting of

  The compound represented by the above general formula [II] is preferably selected from the group consisting of 2-methyl-1,4-hydroquinone, 2,6-dimethyl-1,4-hydroquinone and tetramethyl-1,4-hydroquinone. One or two or more selected from

  The compound represented by the general formula [II] transported to the point B is supplied to, for example, a fuel cell. This generates power.

  When the compound represented by the general formula [II] is consumed (for example, supplied to a fuel cell and generated), the compound represented by the general formula [I] is formed. This product (the compound represented by the above general formula [I]) is preferably recovered.

  The recovered compound represented by the general formula [I] is preferably transported to the point A. Hydrogen is added to the transported compound represented by the general formula [I]. The compound represented by the general formula [II] obtained by this is preferably transported from the point A to the point B. This is repeated. In that case, the waste is extremely reduced.

  When the hydrogen is added to the compound represented by the general formula [I], a polysilane metal catalyst is preferably used. For example, a solution in which the compound represented by the general formula [I] is dissolved, and hydrogen are supplied into a column provided with a polysilane metal catalyst. Thereby, the compound represented by the general formula [I] is easily converted to the compound represented by the general formula [II].

  The solvent used when hydrogen is added to the compound represented by the general formula [I] when the compound represented by the general formula [II] is transported from the point A to the point B (for example, When the amount of the organic solvent remains beyond the specified amount, it is preferably removed so that the amount of the solvent is equal to or less than the specified amount. From the viewpoint of transportation cost, the amount of solvent should be small. However, in consideration of the solvent removal cost and the transportation cost, the solvent removal ratio is, for example, 50 to 99.9% (more preferably 70% or more).

  When the solvent (for example, water) contained in the recovered matter recovered by the fuel cell remains in excess of a specified amount, it is preferable to remove the solvent so that the amount of solvent is equal to or less than the specified amount. Be done. The removal rate of the solvent is, for example, 50 to 99.9% (more preferably 70% or more).

Energy loss and biosafety issues are improved.
It is also advantageous in cost.

Hydrogen addition system Fuel cell power generation system

The first invention is a hydrogen transport agent. The agent for transporting hydrogen is, in other words, a compound (hydrogen carrier) which adds and desorbs hydrogen. The hydrogen transport agent is an agent used when hydrogen is transported from point A to point B. The point A is, for example, a place where hydrogen obtained by the electrolyzer is stored. The point B is, for example, a place where hydrogen is consumed (for example, an installation place of a fuel cell). The agent is a compound represented by the general formula [I]. In the above general formula [I], R ¹ , R ² , R ³ and R ⁴ are any one selected from the group consisting of H, a hydrocarbon group, and —SiR ⁵ (R ⁶ ) (R ⁷ ) . R ⁵ , R ⁶ and R ⁷ are any one selected from H and a group of hydrocarbon groups. R ¹ , R ² , R ³ and R ⁴ are preferably any one selected from the group of H and hydrocarbon groups. Preferably, when all of R ¹ , R ² , R ³ and R ⁴ are H, they are excluded. The hydrocarbon group is preferably a hydrocarbon group having 1 to 10 carbon atoms. More preferably, it is a hydrocarbon group having 1 to 8 carbon atoms. More preferably, it is a hydrocarbon group having 1 to 5 carbon atoms. The hydrocarbon group is preferably a chain hydrocarbon group. The hydrocarbon group is preferably an alkyl group. The R ¹ , R ² , R ³ and R ⁴ may be the same or different. All of R ¹ , R ² , R ³ and R ⁴ may be the same. Some may be identical. Everything may be different. Preferably, at least one of R ¹ , R ² , R ³ and R ⁴ is a hydrocarbon group. The R ⁵ , R ⁶ and R ⁷ may be the same or different. All of R ⁵ , R ⁶ and R ⁷ may be identical. Some may be identical. Everything may be different. The compound represented by the above general formula [I] is, for example, a group of 2-methyl-1,4-benzoquinone (toluquinone), 2,6-dimethyl-1,4-benzoquinone, and tetramethyl-1,4-benzoquinone Or one or more selected from It is easy to react (hydrogenate) the compound represented by the above general formula [I] with a compound represented by the above general formula [II]. The compound represented by the above general formula [I] is solid at 25 ° C. Therefore, it is easy to handle. The energy required for the modification may be small. The cost of the modification is low. The high-pressure resistant container is not necessary in transporting the compound represented by the general formula [II]. The compounds represented by the above general formula [II] have high storage stability. The compounds represented by the above general formula [I] are safer than benzene and toluene. For example, benzene and toluene have high vapor pressure and are flammable [benzene (vapor pressure; 80 ° C./760 torr flash point; −11 ° C.). There is toluene (vapor pressure; 110 ° C./760 torr flash point; 5 ° C.). Benzene and toluene have high vapor pressure. For this reason, there is a high risk of being aspirated into the living body. The carcinogenicity of benzene is known. The action of toluene on the central nervous system is known. On the other hand, 2-methyl-1,4-benzoquinone and 2-methyl-1,4-hydroquinone are solid. Very low volatility. The risk of being aspirated into the body is low. Low risk of fire. 2-Methyl-1,4-hydroquinone has been consumed in large quantities as a polymerization inhibitor. However, no fatal harm such as benzene or toluene has been reported.

The second invention is a hydrogen transport method. The method comprises the step of transporting the compound represented by the general formula [II], which is made by adding hydrogen to the compound represented by the general formula [I], from point A to point B. For example, first, hydrogen is added to the compound represented by the general formula [I]. By the hydrogenation reaction (hydrogenation reaction), a compound represented by the above general formula [II] is obtained. The compound represented by the general formula [II] is transported from point A to point B. The point A is, for example, a place where hydrogen obtained by the electrolyzer is stored. The point B is, for example, a place where hydrogen is consumed (for example, an installation place of a fuel cell). In the general formula [I] [II], any one of R ¹ , R ² , R ³ and R ⁴ selected from the group of H, a hydrocarbon group and -SiR ⁵ (R ⁶ ) (R ⁷ ) It is. R ⁵ , R ⁶ and R ⁷ are any one selected from H and a group of hydrocarbon groups. R ¹ , R ² , R ³ and R ⁴ are preferably any one selected from the group of H and hydrocarbon groups. The hydrocarbon group is preferably a hydrocarbon group having 1 to 10 carbon atoms. More preferably, it is a hydrocarbon group having 1 to 8 carbon atoms. More preferably, it is a hydrocarbon group having 1 to 5 carbon atoms. The hydrocarbon group is preferably a chain hydrocarbon group. The hydrocarbon group is preferably an alkyl group. The R ¹ , R ² , R ³ and R ⁴ may be the same or different. All of R ¹ , R ² , R ³ and R ⁴ may be identical. Some may be identical. Everything may be different. Preferably, at least one of R ¹ , R ² , R ³ and R ⁴ is a hydrocarbon group. The R ⁵ , R ⁶ and R ⁷ may be the same or different. All of R ⁵ , R ⁶ and R ⁷ may be identical. Some may be identical. Everything may be different. The compound represented by the above general formula [I] is, for example, a group of 2-methyl-1,4-benzoquinone (toluquinone), 2,6-dimethyl-1,4-benzoquinone, and tetramethyl-1,4-benzoquinone Or one or more selected from The compound represented by the above general formula [II] is selected, for example, from the group of 2-methyl-1,4-hydroquinone, 2,6-dimethyl-1,4-hydroquinone and tetramethyl-1,4-hydroquinone. One or two or more selected. The compound represented by the above general formula [II] is solid at 25 ° C. Therefore, it is easy to handle.

  When the compound represented by the general formula [II] is consumed (for example, supplied to a fuel cell and generated), the compound represented by the general formula [I] is formed. This product (the compound represented by the above general formula [I]) is preferably recovered. The recovered compound represented by the general formula [I] is preferably transported to the point A. Hydrogen is added to the transported compound represented by the general formula [I]. The compound represented by the general formula [II] obtained by this is preferably transported from the point A to the point B. This is repeated. There was very little waste.

  When the hydrogen is added to the compound represented by the general formula [I], a polysilane metal catalyst is preferably used. The polysilane metal catalyst is commercially available, for example, from JGC Co., Ltd. For example, a solution in which the compound represented by the general formula [I] was dissolved, and hydrogen were supplied into a column provided with a polysilane metal catalyst. As a result, the compound represented by the general formula [I] was easily converted to the compound represented by the general formula [II].

  The solvent used when hydrogen is added to the compound represented by the general formula [I] when the compound represented by the general formula [II] is transported from the point A to the point B (for example, When the amount of the organic solvent remains beyond the specified amount, it is preferably removed so that the amount of the solvent is equal to or less than the specified amount. From the viewpoint of transportation cost, the amount of solvent should be small. However, in consideration of the solvent removal cost and the transportation cost, the solvent removal ratio is, for example, 50 to 99.9% (more preferably 70% or more).

  When the solvent (for example, water or an organic solvent) contained in the recovered matter recovered by the fuel cell remains over a prescribed amount, preferably, the amount of the solvent becomes a prescribed amount or less As removed. The solvent removal rate was, for example, 50 to 99.9% (more preferably 70% or more).

  Specific examples are given below. However, the present invention is not limited to only the following examples. Various modifications and applications are also included in the present invention, as long as the features of the present invention are not significantly impaired.

Example 1 Hydrogenation
The apparatus of FIG. 1 was used. In FIG. 1, 1 is a hydrogen cylinder. 2 is a flow controller. 3 is a container. 4 is a pump. 5 is a column packed with a polysilane metal catalyst. The length of column 5 is 8 cm. This column 5 is packed with 8 g of polysilanepalladium catalyst (Pd / γ-alumina (200 mesh), Pd: 0.1 mmol / g). The polysilane palladium catalyst has a phenyl group and a methyl group in the side chain. 6 is a container. 7 is a solution of the compound represented by the above general formula [I] filled in the container 3. 8 is a solution of the compound represented by the above general formula [II] filled in the container 6. Hydrogenation was performed at 25 ° C. conditions.

  2-Methyl-1,4-benzoquinone (Toluquinone) was dissolved in a solvent (toluene: ethanol = 3: 1). The concentration of toluquinone is 0.05 mol / l. Hydrogen was supplied from cylinder 1 to column 5. The flow rate is 5.6 ml / min. Toluquinone solution 7 was supplied from vessel 3 to column 5. The flow rate is 0.2 ml / min. A hydrogenation reaction was performed at column 5. 2-Methyl-1,4-benzoquinone was converted to 2-methyl-1,4-hydroquinone.

The solution before flowing into the column (solution 7) and the solution after flowing into the column (solution 8) were analyzed by gas chromatograph. The results are shown in Table 1. The numerical value is (2-methyl-1,4-benzoquinone) + (2-methyl-1,4-hydroquinone) = 100%. The same applies to the following table.
Table 1
2-Methyl-1,4-benzoquinone 2-Methyl-1,4-hydroquinone solution 7 99.5% 0.5%
Solution 8 0.5% 99.5%

The detection of substances other than toluene, ethanol, 2-methyl-1,4-benzoquinone and 2-methyl-1,4-hydroquinone was not observed.
Most 2-methyl-1,4-benzoquinone was found to be converted to 2-methyl-1,4-hydroquinone.
The solvent of solution 8 was distilled off. This was examined by ¹ H-NMR. As a result, it was found that 99.5% was 2-methyl-1,4-hydroquinone.

[Example 2 <Fuel cell power generation experiment>]
The apparatus of FIG. 2 was used. In FIG. 2, 9 is an alkyl hydroquinone solution (2-methyl-1,4-hydroquinone aqueous solution). The concentration is 0.05 mol / l. 10 is an alkylbenzoquinone solution (2-methyl-1,4-benzoquinone aqueous solution). 11 is a container filled with an alkyl hydroquinone solution. 12 is a container filled with an alkyl benzoquinone solution. 13 is a pump. 14 is a fuel cell (manufactured by Chemix Co., Ltd.). 15 is a voltage measuring device. 16 is an air inlet. 17 is an outlet of air. The experiment was performed at a temperature of 25 ° C.

  Air was supplied into the fuel cell 14 from the inlet 16. The feed rate was 0.2 ml / min. Thereafter, an aqueous solution of 2-methyl-1,4-hydroquinone was supplied into the fuel cell 14. The feed rate was 0.2 ml / min. As a result, power generation (voltage: 0.25 mV) was recognized. The discharged solution was returned to the vessel 11 and supplied until the voltage was no longer observed, and power generation was continued.

The solution 9 before being supplied to the fuel cell 14 and the solution 10 discharged from the fuel cell 14 and whose voltage was not observed were analyzed by gas chromatograph. The results are shown in Table 3.
Table 3
2-Methyl-1,4-benzoquinone 2-Methyl-1,4-hydroquinone solution 9 0.3% 99.7%
Solution 10 99.5% 0.5%

There was no detection of substances other than water, 2-methyl-1,4-benzoquinone and 2-methyl-1,4-hydroquinone.
It was found that the H of most 2-methyl-1,4-hydroquinone was consumed and was converted to 2-methyl-1,4-benzoquinone.

Example 3 Hydrogenation
The concentrate of the mixed (2-methyl-1,4-benzoquinone: 2-methyl-1,4-hydroquinone = 99.5: 0.5) aqueous solution discharged from the fuel cell of Example 2 is used. It was done according to 1. The results were similar to Example 1. Most 2-methyl-1,4-benzoquinone was found to be converted to 2-methyl-1,4-hydroquinone.

[Example 4 <Fuel cell power generation experiment>]
It carried out according to Example 2. However, the solvent of the solution obtained in Example 1 was concentrated, and the aqueous solution of solid (2-methyl-1,4-hydroquinone) stored (2 years) in a transparent glass container was used. The results were similar to Example 3. For example, the voltage for power generation was 0.25 mV. There was no detection of substances other than water, 2-methyl-1,4-benzoquinone and 2-methyl-1,4-hydroquinone. It was found that the H of most 2-methyl-1,4-hydroquinone was consumed and was converted to 2-methyl-1,4-benzoquinone. Even if 2-methyl-1,4-hydroquinone was stored for a long time, there was no problem in fuel cell power generation.

[Example 5]
A polysilane platinum catalyst (Pt / γ-alumina (200 mesh), Pt: 0.1 mmol / g) was used instead of the polysilane palladium catalyst and was carried out according to Example 1. The results were similar to Example 1.

[Example 6]
A polysilane nickel catalyst (Ni / γ-alumina (200 mesh), Ni: 0.1 mmol / g) was used in place of the polysilane palladium catalyst and was carried out according to Example 1. The results were similar to Example 1.

[Example 7]
A polysilane copper catalyst (Cu / γ-alumina (200 mesh), Cu: 0.1 mmol / g) was used in place of the polysilane palladium catalyst and was carried out according to Example 1. The results were similar to Example 1.

[Example 8]
A polysilane ruthenium catalyst (Ru / γ-alumina (200 mesh), Ru: 0.1 mmol / g) was used in place of the polysilane palladium catalyst and was carried out according to Example 1. The results were similar to Example 1.

Reference Signs List 1 hydrogen cylinder 2 flow rate controller 3, 6 container 4 pump 5 column 11, 12 container 13 pump 14 fuel cell 15 voltmeter 16 air inlet 17 air outlet

Claims (15)

A method in which hydrogen is transported from point A to point B,
The method is
Hydrogen transport characterized in that the compound represented by the general formula [II] obtained by adding hydrogen to the compound represented by the general formula [I] is transported from point A to point B Method.
General formula [I]

General formula [II]

[R ¹ , R ² , R ³ and R ⁴ are any one selected from the group of H, a hydrocarbon group, and —SiR ⁵ (R ⁶ ) (R ⁷ ). R ⁵ , R ⁶ and R ⁷ are any one selected from H and a group of hydrocarbon groups. R ¹ , R ² , R ³ and R ⁴ may be the same or different. When all of R ¹ , R ² , R ³ and R ⁴ are H, they are excluded. R ⁵ , R ⁶ and R ⁷ may be the same or different. ] The method for transporting hydrogen according to claim 1, wherein the point A is a place where hydrogen obtained by the electrolytic device is stored, and the point B is a place where hydrogen is consumed. 3. The method of transporting hydrogen according to claim 1, wherein the compound represented by the general formula [II] transported to the point B is supplied to a fuel cell. The hydrogen transport method according to claim 2 or 3, wherein the compound represented by the general formula [I] formed by consumption of the compound represented by the general formula [II] is recovered. The compound represented by the general formula [] obtained by transporting the recovered compound represented by the general formula [I] to the point A and adding hydrogen to the transported compound represented by the general formula [I] The hydrogen transport method according to claim 4, wherein the compound represented by II] is transported from the point A to the point B. The hydrogen transport method according to claim 1 or 5, wherein when the hydrogen is added to the compound represented by the general formula [I], a polysilane metal catalyst is used. The hydrogen transport according to claim 1 or 6, wherein the solution in which the compound represented by the general formula [I] is dissolved, and the hydrogen are supplied into a column provided with a polysilane metal catalyst. Method. When the compound represented by the general formula [II] is transported from the point A to the point B,
When the solvent used when hydrogen is added to the compound represented by the above general formula [I] remains beyond the specified amount, it is removed so that the amount of the solvent is equal to or less than the specified amount. The method of transporting hydrogen according to any one of claims 1 to 7, characterized in that The hydrogen transport method according to any one of claims 3 to 8, wherein an aqueous solution of the compound represented by the general formula [II] is supplied to the fuel cell. When the solvent contained in the recovered matter recovered by the fuel cell remains over a specified amount, the solvent is removed so that the amount of the solvent is less than the specified amount. The method for transporting hydrogen according to any one of claims 3 to 9. The method for transporting hydrogen according to any one of claims 1 to 10, wherein the compound represented by the general formula [I] is 2-methyl-1,4-benzoquinone (toruquinone). The hydrogen transport method according to any one of claims 1 to 11, wherein the compound represented by the general formula [II] is 2-methyl-1,4-hydroquinone. An agent used when hydrogen is transported from point A to point B,
The agent for transporting hydrogen, wherein the agent is a compound represented by the general formula [I].
General formula [I]

[R ¹ , R ² , R ³ and R ⁴ are any one selected from the group of H, a hydrocarbon group, and —SiR ⁵ (R ⁶ ) (R ⁷ ). R ⁵ , R ⁶ and R ⁷ are any one selected from H and a group of hydrocarbon groups. R ¹ , R ² , R ³ and R ⁴ may be the same or different. When all of R ¹ , R ² , R ³ and R ⁴ are H, they are excluded. R ⁵ , R ⁶ and R ⁷ may be the same or different. ] The agent for transporting hydrogen according to claim 13, wherein the point A is a place where hydrogen obtained by the electrolytic device is stored, and the point B is a place where hydrogen is consumed. The hydrogen transport agent according to claim 13 or 14, wherein the compound represented by the general formula [I] is 2-methyl-1,4-benzoquinone (toluquinone).

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