Acetylene black cathode provided with waterproof membrane and used for producing hydrogen peroxide and manufacturing method thereof
A technology for producing hydrogen peroxide and a production method, which is applied to electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of cathode electrocatalytic activity, current efficiency and service life that need to be improved, and achieves advantages in price, low energy consumption, The effect of high pollutant removal rate
Inactive Publication Date: 2011-08-17
盛义平 +1
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Problems solved by technology
At present, graphite, reticulated glass carbon, activated carbon fiber and other materials are mainly used as catalysts to make cathodes for hydrogen peroxide generation, but the electrocatalytic activity, current efficiency and service life of cathodes need to be improved.
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[0012] exist figure 1 and figure 2 Among them, the acetylene black catalytic layer (2) is in close contact with the metal current collecting net (3) to form the acetylene black cathode. In order to improve the rigidity of the acetylene black cathode and avoid swinging during use, the acetylene black cathode is clamped in the insulating material. into the electrode holder (1).
[0013] exist image 3 In the shown embodiment, power supply (4), electrolyzer (5), acetylene black cathode (6), gas supply pipe (7), gas diffuser (8), inert anode (10) and wire (11) constitute Electrochemical system for producing aqueous hydrogen peroxide solution (9). Hydrogen peroxide is efficiently produced on the acetylene black cathode when electricity is applied and air is supplied to the cathode.
[0014] exist Figure 4 In the shown embodiment, power supply (4), electrolyzer (5), acetylene black cathode (6), gas supply pipe (7), gas diffuser (8), iron anode (13) and wire (11) constitute A...
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The invention relates to an acetylene black cathode for producing hydrogen peroxide and having a waterproof membrane and a manufacturing method thereof. The method for manufacturing the acetylene black cathode with the waterproof membrane comprises six steps of: preparing an acetylene black catalysis layer, preparing a metal current collection net, pressing the acetylene black catalysis layer andthe metal current collection net into a cathode precursor, carrying out primary calcining on the cathode precursor, coating a polytetrafluoroethylene membrane on the surface of the cathode precursor which is calcined for the first time, carrying out secondary calcining and the like. The acetylene black cathode with the waterproof membrane has simple structure and convenience in manufacturing. Compared with the traditional cathode made by taking materials like graphite, meshed glass carbon, activated carbon fiber and the like, the activity of the acetylene black cathode is increased by 3-4 times, and the current efficiency is greater than 95 percent. The acetylene black cathode has the characteristics of long service life, no environmental pollution and big price advantage.
Description
Technical field [0001] The invention belongs to the field of preparing inorganic compounds by electrochemical methods. The invention relates to an acetylene black cathode with a waterproof membrane for producing hydrogen peroxide and a manufacturing method thereof. Background technique [0002] Hydrogen peroxide is a strong oxidizing agent. The mixture of hydrogen peroxide and ferrous ions is called Fenton's reagent. In the Fenton system, under the catalysis of ferrous ions, hydrogen peroxide is decomposed into hydroxide and hydroxyl radicals with stronger oxidizing ability. Hydroxyl radicals can directly oxidize organic matter in sewage into carbon dioxide, water and inorganic salts. In the electro-Fenton wastewater treatment system based on the Fenton reaction, hydrogen peroxide is continuously generated on the surface of the cathode by the reduction of dissolved oxygen, and the cathode for electrochemically generating hydrogen peroxide is a key component of the system....
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IPC IPC(8): C25B11/14C25B11/12C25B1/30
Inventor 盛义平王伟
Owner 盛义平