Method for stably catalyzing methane cracking hydrogen production by using carbon black enhanced activated carbon and application

A technology of activated carbon and carbon black, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problem of rapid catalyst deactivation and achieve low production cost and high economic efficiency

Active Publication Date: 2021-08-27
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0023] Aiming at the problem of rapid deactivation of a single activated carbon as a catalyst, the present invention proposes a method for using carbon black to enhance activated carbon to stably catalyze methane cracking to produce hydrogen. The method uses 8-16 mesh coconut shell activated carbon as a carrier to load carbon black. The preparation process combines two carbon catalysts and reacts at 850-1000°C under normal pressure

Method used

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  • Method for stably catalyzing methane cracking hydrogen production by using carbon black enhanced activated carbon and application
  • Method for stably catalyzing methane cracking hydrogen production by using carbon black enhanced activated carbon and application
  • Method for stably catalyzing methane cracking hydrogen production by using carbon black enhanced activated carbon and application

Examples

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Embodiment 1

[0054] A method for using carbon black to enhance activated carbon to stably catalyze methane cracking to produce hydrogen, that is, the preparation process of the catalyst is as follows figure 1 shown.

[0055] Wash the activated carbon catalyst, dry it, and put it into 30% HNO 3 After soaking in the solution for 12 hours, wash the activated carbon with ultrapure water until the filtrate is neutral, and then dry it;

[0056] Add 30ml of ultra-pure water for every 1g of carbon black to disperse evenly,

[0057] Put 0.5g of dispersant into 150ml ultrapure water and mix well;

[0058] Mix according to the volume ratio of carbon black solution and sodium dodecylpropanesulfonate dispersant to be 10:1, through 0.5h ultrasonic vibration, mechanical stirring simultaneously, make carbon black dispersion liquid;

[0059] Mix according to the mass ratio of activated carbon and carbon black BP2000 of 20:5, ultrasonically oscillate and mechanically stir for 1 hour, then sieve out the a...

Embodiment 2

[0063] A method for using carbon black to enhance activated carbon to stably catalyze methane cracking to produce hydrogen, that is, the preparation process of the catalyst is as follows figure 1 shown.

[0064] Wash the activated carbon catalyst, dry it, and put it into 30% HNO 3 After soaking in the solution for 12 hours, wash the activated carbon with ultrapure water until the filtrate is neutral, and then dry it;

[0065] Add 50ml of ultra-pure water for every 1g of carbon black to disperse evenly,

[0066] Put 0.5g of dispersant into 150ml ultrapure water and mix well;

[0067] Mix according to the volume ratio of carbon black solution and sodium dodecylpropanesulfonate dispersant as 6:1, through 0.5h ultrasonic vibration, mechanical stirring at the same time, make carbon black dispersion liquid;

[0068] Mix according to the mass ratio of activated carbon and carbon black BP2000 of 20:3, ultrasonically oscillate and mechanically stir for 1 hour, then sieve out the act...

Embodiment 3

[0072] Except that the mass ratio of activated carbon and carbon black is 20:4, the others are the same as in Example 1.

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Abstract

The invention discloses a method for stably catalyzing methane cracking hydrogen production by using carbon black enhanced activated carbon and application. According to the method, 8-16-mesh coconut shell activated carbon is adopted as a carrier to load carbon black, two carbon catalysts are combined through a series of preparation processes, and a reaction is performed at 850-1000 DEG C under normal pressure. According to the method, the conversion rate of a single activated carbon catalyst for catalyzing methane cracking hydrogen production is effectively improved, so that the activated carbon catalyst has a higher initial conversion rate and shows an inactivation delaying effect, and the method is a method for effectively improving the catalytic activity of cheap activated carbon. The method has important application value for industrial application of catalyzing methane cracking hydrogen production by the carbon catalyst and increasing the methane cracking conversion rate.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by methane cracking, in particular to a method and application of using carbon black to strengthen activated carbon to stably catalyze methane cracking to produce hydrogen. Background technique [0002] Climate change and energy depletion are serious challenges facing the world today. With the increase of population, the demand for energy will continue to increase. It is imperative to develop efficient and clean energy. As the most promising form of energy, hydrogen energy has the huge advantages of high calorific value, no pollution, and renewable. Methane is the main component of natural gas and the most commonly used raw material for large-scale industrial hydrogen production. Methane to hydrogen is usually carried out by steam reforming or partial oxidation. [0003] CH 4 +H 2 O=CO+3H 2 [0004] [0005] Although the reforming of natural gas has been applied in industry an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/26C01B3/30
CPCC01B3/26C01B3/30C01B2203/0277C01B2203/1082C01B2203/1241
Inventor 杨丽宣国会辛春梅刘方刘帅翟成
Owner CHINA UNIV OF MINING & TECH
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