Electrochemical synthesis of propanol in protein exchange film fuel cell

A proton exchange membrane, fuel cell technology, applied in fuel cell additives, fuel cell control, organic chemistry, etc., can solve the problems of serious energy consumption, harsh reaction conditions, etc., achieve good competitiveness, mild reaction conditions, increase and decrease load handy effect

Inactive Publication Date: 2003-03-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies in the prior art, break through the traditional ideas of electrolytic hydrogenation reduction and fuel cell reactor technology, and propose a method for the electrochemical synthesis of propanol in proton exchange membrane fuel cells, which can be used in proton exchange membrane fuel cells Carry out the symbiosis of propenol and electric energy for the electrochemical synthesis of allyl alcohol, solve the problems of harsh reaction conditions and serious energy consumption in the existing synthesis technology, and at the same time, provide a new reaction site for hydrogenation reaction, and expand new possibilities for proton exchange membrane fuel cells Application field

Method used

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  • Electrochemical synthesis of propanol in protein exchange film fuel cell
  • Electrochemical synthesis of propanol in protein exchange film fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: Preparation of platinum loading 0.5mg / cm 2 The membrane electrode, and the membrane electrode into the battery. Configure 30ml of 0.5mol / L aqueous solution of propylene alcohol, according to the attached figure 1 Connect the device system and control the battery temperature at 30°C. After the initial polarization, feed hydrogen (the hydrogen flow rate is controlled at 10ml / min), turn on the peristaltic pump (the catholyte flow rate is 1mL / min), and 6.8 mmol of n-propanol can be obtained in 2 hours, with a conversion rate of 16% and a maximum power density of 4.9 mW / cm 2 , the current density at this time is 51mA / cm 2 .

Embodiment 2

[0022] Embodiment 2: Preparation of platinum loading 2mg / cm 2 The membrane electrode, and the membrane electrode into the battery. Configure 30ml of 5mol / L propylene alcohol aqueous solution, according to the attached figure 1 Connect the device system and control the battery temperature at 70°C. After the initial polarization, feed hydrogen (the hydrogen flow rate is controlled at 60ml / min), turn on the peristaltic pump (the catholyte flow rate is 6ml / min), and 7.4mmol of n-propanol can be obtained in 2 hours, with a conversion rate of 18% and a maximum power density of 5.8 mW / cm 2 , the current density at this time is 60mA / em 2 .

Embodiment 3

[0023] Example 3: A typical proton exchange membrane fuel cell porous gas diffusion three-in-one membrane electrode is used, and the membrane electrode is installed in the battery. Configure 30ml of 2mol / L propylene alcohol aqueous solution, according to the attached figure 1 Connect the device system and control the battery temperature at 50°C. After the initial polarization, feed hydrogen (the hydrogen flow rate is controlled at 10ml / min), turn on the peristaltic pump (the catholyte flow rate is 3ml / min), 8.8mmol of n-propanol can be obtained in 2 hours, the conversion rate is 21%, and the maximum power density is 6.2 mW / cm 2 , the current density at this time is 66mA / cm 2 .

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Abstract

The proton exchange film fuel cell is utilized to synthesize propanol with propenol and produce electric energy. The proton exchange film fuel cell is connected to the test while controlling its temperature and the cathode chamber is pre-treated with nitrogen before bumping in cathode reactant, the cell is then initially polarized via introducing hydrogen to the anode and turning on the circuit to make residual oxygen in the cathode chamber react fully. Through reaction for 1-8 hr in controlled hydrogen flow rate, propenol water solution flow rate and reaction current and no load, pure propanol is produced. In the proton exchange film fuel cell of the present invention, porous gas diffusing three-in-one film electrode is used. The present invention is important in producing small amount of high-quality chemical product.

Description

Technical field: [0001] The invention relates to an electrochemical synthesis method of propanol in a proton exchange membrane fuel cell. The proton exchange membrane fuel cell is used as a reactor to electrochemically synthesize propenol within the working range of the proton exchange membrane fuel cell. [0002] Chemical hydrogenation reaction to synthesize propanol and generate electricity. It belongs to the field of electrochemical engineering and catalytic technology. Background technique: [0003] Allyl alcohol, also known as allyl alcohol, contains two functional groups, double bond and hydroxyl group in the structure of allyl alcohol, which can participate in various organic reactions such as oxidation, reduction, esterification, and addition, making it widely used in organic synthesis, agricultural chemicals, It has a wide range of uses in pharmaceutical and spice intermediates. A variety of organic chemicals can be produced by using allyl alcohol, especially for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/10H01M8/04298
CPCY02E60/50
Inventor 袁晓姿马紫峰
Owner SHANGHAI JIAO TONG UNIV
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