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Catalyst for hydrogen production from catalytic pyrolysis of natural gas and preparation method thereof

A catalytic cracking and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of easy deactivation, affecting catalyst stability, and anti-coking Poor ability and other problems, to achieve the effect of improving stability, inactive surface properties, and strong anti-coking ability

Inactive Publication Date: 2009-05-27
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of catalyst has poor anti-coking ability and is easy to deactivate, which affects the stability of the catalyst.

Method used

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  • Catalyst for hydrogen production from catalytic pyrolysis of natural gas and preparation method thereof
  • Catalyst for hydrogen production from catalytic pyrolysis of natural gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The parts by weight of each component in the catalyst are: Ni element 10, SiO 2 60, CNFs 45; prepare nickel nitrate and SiO according to the above ratio 2 , The amount of CNFs added.

[0025] ①Soak CNFs in 20% nitric acid by mass, boil and reflux for 2 hours, filter, wash the obtained CNFs to pH 6, dry at 80°C for 24 hours, and then dry at 800°C Roasting for 1h;

[0026] ② SiO 2 Add the CNFs obtained in step ① into an aqueous solution of nickel nitrate at a temperature of 60°C and stir for 4 hours, then add ammonia water to adjust the pH value to 6, continue to stir for 6 hours, and then let it stand for 8 hours. Dry it for 24 hours to get it.

Embodiment 2

[0028] The parts by weight of each component in the catalyst are: Ni element 50, TiO 2 5, CNFs 30; prepare nickel chloride and TiO according to the above ratio 2 , The amount of CNFs added.

[0029] ① Soak CNFs in nitric acid with a mass percentage of 50%, boil and reflux for 1 hour, filter, wash the obtained CNFs to pH 7, dry at 120°C for 2 hours, and then dry at 600°C Roasting for 3h; then repeat the above process 2 times for the obtained CNFs;

[0030] ② TiO 2 Add the CNFs obtained in step ① into an aqueous solution of nickel chloride at 90°C and stir for 1 hour, then add sodium carbonate solution to adjust the pH value to 7, continue stirring for 4 hours, and then let it stand for 2 hours. It is obtained by drying at 90°C for 10 hours.

Embodiment 3

[0032] The parts by weight of each component in the catalyst are: Ni element 30, ZrO 2 70, CNFs 2; prepare nickel acetate, ZrO according to the above ratio 2 , The amount of CNFs added.

[0033] ①Soak CNFs in 70% nitric acid by mass, boil and reflux for 1.5h, filter, wash the obtained CNFs to pH 6.5, dry at 100°C for 5h, then dry at 350°C Lower roasting for 8h; then repeat the above process once for the obtained CNFs;

[0034] ② ZrO 2 Add the CNFs obtained in step ① into an aqueous solution of nickel acetate at a temperature of 70°C and stir continuously for 0.5h, then add sodium hydroxide solution to adjust the pH value to 8, continue stirring for 3h, and then stand for 6h, and the obtained precipitate is filtered and washed , Drying at a temperature of 100 ° C for 8 hours, that is, too.

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PUM

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Abstract

The invention discloses a natural gas catalytic pyrolysis hydrogen production catalyst and a preparation method thereof. The natural gas catalytic pyrolysis hydrogen production catalyst takes MOyCNFs as a carrier to load an active component Ni; wherein, the weight portions of each component are as follows: 10 to 50 portions of Ni element, 5 to 70 portions of MOy and 2 to 45 portions of CNFs; the preparation method is as follows: the MOy and pretreated CNFs are added into water solution of nickel salt, then a soda lye is added to adjust the pH value between 6 and 8; then the mixture is stirred and stood; the obtained deposit is filtered, washed and dried, thus obtaining the catalyst. The catalyst has the advantages of high methane conversion rate, high carbon deposit resistance and good stability. The invention belongs to the field of natural gas hydrogen production.

Description

technical field [0001] The invention relates to a hydrogen production catalyst, in particular to a natural gas catalytic cracking hydrogen production catalyst. The present invention also relates to a process for the preparation of the aforementioned catalyst. Background technique [0002] As a device that directly converts chemical energy into electrical energy, fuel cells have the advantages of environmental protection and high power generation efficiency, and have become a hot spot in the research and development of the international energy field. Among them, the proton exchange membrane fuel cell (PEMFC) has become one of the research focuses in the field of fuel cells because of its high efficiency, mild working conditions, and environmental friendliness. Proton exchange membrane fuel cells are widely used, not only as a driving source for fuel cell vehicles, as a power source for combined heat and power, as a portable power source, but also as a stationary power source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/755B01J21/18C01B3/26
Inventor 肖钢侯晓峰崔冰冰周帅林
Owner HANERGY TECH
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