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Preparation method of carbon-coating hollow crystal nickel oxide ethanol oxidation catalyst

A technology of ethanol oxidation and carbon coating, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of high price, easy poisoning, etc. Improved performance and better stability

Inactive Publication Date: 2017-12-15
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

Noble metals have been widely used in ethanol oxidation due to their excellent electrocatalytic properties, but noble metals have many disadvantages, such as high price and easy poisoning.

Method used

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  • Preparation method of carbon-coating hollow crystal nickel oxide ethanol oxidation catalyst
  • Preparation method of carbon-coating hollow crystal nickel oxide ethanol oxidation catalyst
  • Preparation method of carbon-coating hollow crystal nickel oxide ethanol oxidation catalyst

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Embodiment Construction

[0015] The preparation method of the ethanol oxidation catalyst of carbon-coated hollow crystal nickel oxide, the specific preparation process is as follows:

[0016] (1) Preparation of nickel / carbon solid:

[0017] Weigh 2g of glucose and 1.2g of nickel acetate, and then dissolve the mixture in 50mL of deionized water, stir for 2h, and then place it in a blast drying oven at 100°C for 10h. The completely dried solid was placed in a tube furnace, and calcined at 800°C with a heating rate of 3°C / min under a nitrogen atmosphere and kept for 2 hours to obtain a nickel / carbon solid.

[0018] (2) Preparation of crystal nickel oxide catalyst:

[0019] Weigh 1 g of nickel / carbon solid and place it in a crucible, then place the crucible in a muffle furnace for calcination at 350 °C for 2 h, with a heating rate of 1 °C / min. The obtained black powder was washed three times with deionized water, and dried at 40° C. for 12 hours to obtain a crystalline nickel oxide catalyst.

[0020] R...

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Abstract

The invention discloses a preparation method of a carbon-coating hollow crystal nickel oxide ethanol oxidation catalyst. The preparation method comprises the following steps that 1, glucose and nickel acetate are proportionally dissolved into deionized water to prepare a solution, the solution is placed into a tube furnace to be calcined after being dried to obtain nickel / carbon solids; 2, the nickel / carbon solids are calcined under the air atmosphere to obtain the carbon-coating hollow crystal nickel oxide catalyst. The prepared carbon-coating hollow crystal nickel oxide catalyst has the good electrocatalytic activity on ethyl alcohol under the alkaline condition, the raw materials adopted in preparation are simple and low in cost, the preparation process is simple, and the method is expected to be applied to the fields of alcohol sensors, direct alcohol fuel cells and the like.

Description

technical field [0001] The invention belongs to the technical field of ethanol oxidation catalysts, can be applied in the fields of ethanol fuel cells, ethanol sensors and the like, and specifically relates to a preparation method of a carbon-coated hollow crystal nickel oxide ethanol oxidation catalyst. Background technique [0002] Since the chemical energy of ethanol can be directly converted into available electrical energy and its reaction products are non-toxic and harmless, the research on ethanol oxidation has always been concerned by the scientific community. Currently, ethanol can be applied in fuel cells, sensors and fuel cell-type ethanol sensors. Noble metals have been widely used in ethanol oxidation due to their excellent electrocatalytic properties, but noble metals have many disadvantages, such as high price and easy poisoning. In order to solve this problem, many studies have been devoted to replacing noble metals with metal oxides, and a large number of r...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J37/08H01M4/90G01N31/10
CPCB01J23/755B01J37/084B01J37/088G01N31/10H01M4/9016H01M4/9083Y02E60/50
Inventor 余建国王惠李瑶
Owner TIANJIN POLYTECHNIC UNIV
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