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Method for preparing hydrogen by electrochemically reforming alcohol and device thereof

An electrochemical and catalyst technology, which is applied in the field of hydrogen production and hydrogen production by electrochemical reforming of alcohol, can solve the problems of unsuitable sustainable development, unsuitable economic and resource utilization, etc., so as to facilitate popularization and application and reduce energy consumption , cost reduction effect

Inactive Publication Date: 2009-08-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, exchanging fossil fuels and external energy for hydrogen energy is not suitable economically and resource utilization, and does not meet the needs of sustainable development.

Method used

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  • Method for preparing hydrogen by electrochemically reforming alcohol and device thereof
  • Method for preparing hydrogen by electrochemically reforming alcohol and device thereof

Examples

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Effect test

Embodiment 1

[0049] Two-electrode electrochemical reforming of methanol with a single-chamber structure. The anode catalyst is Pd, the cathode catalyst is Pd-Co-Fe, and the diaphragm is anion-conductive polyethersulfone-polyvinylpyrrolidone composite membrane. After adding alkaline methanol / water solution, a direct current is applied between the two electrodes, the positive electrode is the methanol oxidation electrode, and the negative electrode is the water reduction electrode. When the voltage reaches 0.4V, the negative electrode obviously produces hydrogen.

Embodiment 2

[0051] Double-electrode electrochemical reforming of ethanol with a single-chamber structure. The anode catalyst is Pd-Au, the cathode catalyst is Co-Fe, and the diaphragm is anion-conducting polyvinyl alcohol-based quaternary ammonium membrane. After adding alkaline ethanol / water solution, a direct current is applied between the two electrodes, the positive electrode is the ethanol oxidation electrode, and the negative electrode is the water reduction electrode. When the voltage reaches 0.4V, the negative electrode obviously produces hydrogen.

Embodiment 3

[0053] Two-electrode electrochemical reforming of methanol with a single-chamber structure. The anode catalyst is Pt-Ru, the cathode catalyst is Ni-Co, and the separator is an anion-conducting polymer membrane. After adding alkaline methanol / water solution, a direct current is applied between the two electrodes, the positive electrode is the methanol oxidation electrode, and the negative electrode is the water reduction electrode. When the voltage reaches 0.4V, the negative electrode obviously produces hydrogen.

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Abstract

The invention provides a method for preparing hydrogen by reforming alcohol through galvano chemistry and a device thereof. The method comprises: the mixed liquid of alcohol and water enters into an anode chamber in a reforming groove through a circulation pump; DC voltage is applied between anode and cathode of the reforming groove, the alcohol and the water are reformed through galvano chemistry at the anode, and the water is restored to be hydrogen at the cathode to be precipitated. The device comprises a DC power supply, the mixed liquid of alcohol and water, a container used for storing the mixed liquid of alcohol and water, the anode chamber used for passing in and out of the mixed liquid of liquid alcohol and water, a cathode chamber used for storing water and a hydrogen collecting device connected with the cathode chamber; wherein, the anode chamber is separated from the cathode chamber by a solid anion conducting polymer film which is taken as electrolyte. By using the invention, the aqueous solution of alcohol enters into the reforming groove through the circulation pump, the alcohol and the water are reformed through galvano chemistry at the anode when being applied with certain DC voltage, and the water is restored to be hydrogen at the cathode to be separated out. The invention can be used for preparing hydrogen under the conditions of low voltage, cost and energy consumption.

Description

technical field [0001] The invention relates to a hydrogen production technology, which belongs to the field of energy, in particular to a method and a device for hydrogen production by electrochemical reforming of alcohol. Background technique [0002] As we all know, hydrogen has a wide range of uses, including chemical synthesis, petroleum refining, hydrogenation reactions in various industrial processes, etc. Normally, pure hydrogen is a colorless, odorless gas, however, hydrogen can be stored in liquid form under high pressure. [0003] The most common method of producing hydrogen is the electrolysis of water. It is a simple process in which water is split into hydrogen and oxygen through an electrochemical reaction in an electrolytic cell. The cost of electrolyzing water to produce hydrogen is mainly determined by the cost of electric energy consumption in the electrolysis process. The principle of hydrogen production by electrolysis of water is very clear. The theo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/02C25B9/06C25B9/17
Inventor 沈培康
Owner SUN YAT SEN UNIV
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