Electrochemical reduction device and method for manufacturing hydride of aromatic hydrocarbon compound or n-containing heterocyclic aromatic compound

a technology electrochemical hydrogenation method, which is applied in the direction of electrolytic organic production, manufacturing tools, electric circuits, etc., can solve the problem of difficult industrial hydrogenation of aromatic hydrocarbon compound benzene rings, and achieve high efficiency

Inactive Publication Date: 2015-01-08
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]In this background, a purpose of the present invention is to provide a technology capable of electrochemically hydrogenating at least one benzene ring of an aromatic hydrocarbon compound or an N-containing heterocyclic aromatic compound with high efficiency.

Problems solved by technology

However, the amount of substance (current density) that can be transformed per electrode area and time is not large, and it has been difficult to industrially hydrogenate a benzene ring of aromatic hydrocarbon compounds.

Method used

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  • Electrochemical reduction device and method for manufacturing hydride of aromatic hydrocarbon compound or n-containing heterocyclic aromatic compound
  • Electrochemical reduction device and method for manufacturing hydride of aromatic hydrocarbon compound or n-containing heterocyclic aromatic compound
  • Electrochemical reduction device and method for manufacturing hydride of aromatic hydrocarbon compound or n-containing heterocyclic aromatic compound

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first embodiment

[0025]FIG. 1 is a schematic diagram illustrating the configuration of an electrochemical reduction device 10 according to an embodiment. FIG. 2 is a diagram illustrating the configuration of an electrode unit of the electrochemical reduction device 10 according to the embodiment. As shown in FIG. 1, the electrochemical reduction device 10 has an electrode unit 100, a power control unit 20, an organic material storage tank 30, a water storage tank 40, a gas-liquid separator 50, and a control unit 60.

[0026]The power control unit 20 is, for example, a DC / DC converter for converting the output voltage of a power source into a predetermined voltage. The positive electrode output terminal of the power control unit 20 is connected to the positive electrode of the electrode unit 100. The negative electrode output terminal of the power control unit 20 is connected to the negative electrode of the electrode unit 100. With this, a predetermined voltage is applied between an oxygen evolving ele...

second embodiment

[0074]FIG. 5 is a schematic diagram illustrating the configuration of an electrochemical reduction device according to a second embodiment. As shown in FIG. 5, an electrochemical reduction device 10 comprises an electrode unit assembly 200, a power control unit 20, an organic material storage tank 30, a water storage tank 40, a gas-liquid separator 50, and a control unit 60. The electrode unit assembly 200 has a laminated structure where a plurality of electrode units 100 are connected in series. In the present embodiment, the number N of the electrode units 100 is five. The configuration of each electrode unit 100 is similar to the configuration according to the first embodiment. In FIG. 5, the electrode units 100 are simplified for illustration, and liquid diffusion layers 140a and 140b and separators 150a and 150 are omitted.

[0075]The positive electrode output terminal of the power control unit 20 is connected to the positive electrode terminal of the electrode unit assembly 200....

third embodiment

[0084]FIG. 6 is a schematic diagram illustrating the configuration of an electrochemical reduction device according to a third embodiment. The basic configuration of an electrochemical reduction device 10 according to the present embodiment is similar to the basic configuration according to the second embodiment. In the present embodiment, an electrode unit assembly 200 is held in an electrolytic tank 300. A second circulation pathway is provided between the electrolytic tank 300 and a water storage tank 40, and the electrolytic tank 300 is filled with water supplied from the water storage tank 40. Water that fills the electrolytic tank 300 can circulate in oxygen evolving electrodes 130 of the respective electrode units 100.

[0085]In addition to effects that can be obtained in the second embodiment, the electrochemical reduction device 10 according to the present embodiment has an advantage of decreasing an in-plane temperature difference of the oxygen evolving electrodes 130, a tem...

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Abstract

An electrochemical reduction device is provided with an electrode unit, a power control unit, an organic material storage tank, a water storage tank, a gas-liquid separator, and a control unit. The electrode unit has an electrolyte membrane, a reduction electrode, and an oxygen evolving electrode. The electrolyte membrane is formed of an ionomer. A reduction catalyst used for the reduction electrode contains at least one of Pt and Pd. The oxygen evolving electrode contains catalysts of noble metal oxides such as RuO2, IrO2, and the like. The control unit controls the power control unit such that a relationship, VHER−20 mV≦VCA≦VTRR, can be satisfied when the potential at a reversible hydrogen electrode, the standard redox potential of an aromatic hydrocarbon compound or an N-containing heterocyclic aromatic compound, and the potential of the reduction electrode are expressed as VHER, VTRR, and VCA, respectively.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2012-075635, filed on Mar. 29, 2012 and International Patent Application No. PCT / JP2013 / 002187, filed on Mar. 29, 2013, the entire content of each of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a device and a method for electrochemically hydrogenating an aromatic hydrocarbon compound or an N-containing heterocyclic aromatic compound.[0004]2. Description of the Related Art[0005]It is known that cyclic organic compounds such as cyclohexane and decalin are able to be obtained efficiently by hydrogenating a benzene ring of corresponding aromatic hydrocarbon compounds (benzene and naphthalene) using a hydrogen gas. Since high temperature and high pressure are required for this reaction, this reaction is not suitable for small and medium-sc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C25B15/02C25B3/04C25B9/06C25B3/25C25B9/17C25B9/23
CPCC25B15/02C25B3/04C25B9/06C25B3/25C25B9/23C25B9/17
Inventor SATO, YASUSHIMIYOSHI, KOTANAKAGAWA, KOJIROKOBORI, YOSHIHIRO
Owner JX NIPPON OIL & ENERGY CORP
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