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Catalyst for shifting carbon monoxide by water gas reaction in hydrogen-rich fuel gas and preparation method thereof

A technology of carbon monoxide and catalyst, which is applied in the field of water gas shift technology and catalyst, can solve the problems of difficult to meet the requirements of industrial production and high price, and achieve the effect of cheap raw materials, low manufacturing cost and simple process

Inactive Publication Date: 2009-09-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst has high and stable water gas shift activity in a hydrogen-rich atmosphere, but it is expensive and difficult to meet the requirements of industrial production

Method used

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  • Catalyst for shifting carbon monoxide by water gas reaction in hydrogen-rich fuel gas and preparation method thereof
  • Catalyst for shifting carbon monoxide by water gas reaction in hydrogen-rich fuel gas and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: CuO 40%, ZnO 40%, Al by mass percentage of oxide 2 o 3 The corresponding nitrate solution of 20% proportioning, take by weighing 46g Cu (NO 3 ) 2 ·3H 2 O, 56g Zn(NO 3 ) 2 ·6H 2 O and 45g Al(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred for 10 minutes, placed in an ultrasonic tank for ultrasonic treatment for 30 minutes, at the same time, weighed 59g Na 2 CO 3 Heat slowly in 500ml of deionized water until completely dissolved, co-precipitate the metal salt solution and alkali solution in the deionized bottom solution at a constant temperature of 60°C, adjust the pH value to 9 with 1M NaOH aqueous solution, stir and age for 1 hour, and dissolve the precipitate The solution was transferred to a constant temperature oil tank, and treated at a constant temperature of 80°C for 24 hours. During the precipitation process, the resulting precipitation was performed three times with deionized water and dried at 110°C for 10 hours. The mixture o...

Embodiment 2

[0025] Embodiment 2: CuO 35%, ZnO 25%, Al by oxide mass percentage 2 o 3 For the corresponding nitrate solution of 40% proportioning, weigh 39g Cu(NO 3 ) 2 ·3H 2 O, 33g Zn(NO 3 ) 2 ·6H 2 O and 86g Al(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred for 10 minutes, placed in an ultrasonic tank for ultrasonic treatment for 60 minutes, at the same time, weighed 65g Na 2 CO 3 Heat slowly in 500ml of deionized water until it is completely dissolved. Co-precipitate the metal salt solution and alkali solution in the deionized bottom solution at a constant temperature of 60°C. Adjust the pH value to 7 with 1M NaOH aqueous solution, stir and age for 3 hours, and dissolve the precipitated solution Transfer to a constant temperature oil tank, treat at a constant temperature of 60°C for 10 hours, use deionized water 5 times during the precipitation process, and dry at 80°C for 24 hours, roast the above-mentioned mixture at 500°C for 2 hours, and finally obtain a sol...

Embodiment 3

[0026] Embodiment 3: CuO 50%, ZnO 40%, Al by oxide mass percentage 2 o 3 The corresponding nitrate solution of 10% proportioning, weigh 63g Cu(NO 3 ) 2 ·3H 2 O, 59g Zn(NO 3 ) 2 ·6H 2 O and 18gAl(NO 3 ) 3 9H 2 O, dissolved in 500ml deionized water, stirred for 10 minutes, placed in an ultrasonic tank for ultrasonic treatment for 40 minutes, at the same time, weighed 55gNa2 CO 3 In 500ml of deionized water, heat slowly until completely dissolved, co-precipitate the metal salt solution and alkali solution in the constant temperature deionized bottom solution at 60°C, adjust the pH value to 9 with 1M NaOH aqueous solution, stir and age for 2 hours, and dissolve the precipitated solution Transfer to a constant temperature oil tank, treat at a constant temperature of 60°C for 24 hours, use deionized water for 4 times during the precipitation process, and dry at 100°C for 16 hours, and roast the above-mentioned mixture at 400°C for 4 hours, and finally obtain a solid Crush...

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Abstract

The invention relates to a catalyst for changing and transforming carbon monoxide in hydrogen-rich fuel gas of coke-oven gas according to a water gas shift reaction and a preparation method thereof, which belong to the technical field of water gas shift processes and catalysts. The catalyst takes copper or iron as an active component, takes zinc, rare earth element cerium or lanthanum and one of boron, aluminum or indium as auxiliary agents, and is prepared by adopting a solution precipitation method. A mixed salt solution of metal nitrates or sulfates is subjected to processes such as homogenization treatment by ultrasonic wave, co-precipitation, constant-temperature aging, drying, baking and the like to finally obtain the mixed metal solid catalyst. The catalyst prepared by the method has the advantages of higher activity, good dispersivity, and large specific surface area, and has high water gas shift activity in the hydrogen-rich fuel gas (VH2 is more than 75 percent), and the transformation ratio of carbon monoxide of the catalyst can approach 100 percent.

Description

technical field [0001] The invention relates to a catalyst for converting carbon monoxide in hydrogen-rich gas of coke oven gas according to a water-gas shift reaction and a preparation method thereof, belonging to the technical field of water-gas shift technology and catalysts. Background technique [0002] The large-scale application of energy-saving and clean fuel cell vehicles requires efficient and low-cost hydrogen production technology. Existing hydrogen production methods such as electrolysis of water and reforming of natural gas will be difficult to meet the requirements of modern industrial development. Therefore, finding a large and cheap source of hydrogen has become one of the key issues that people urgently need to solve. The coke oven gas produced in the metallurgical process contains a large amount of H after catalytic cracking of tar components and methane reforming reactions. 2 , a small amount of CO and CO 2 and other substances and become an ideal raw ...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J21/04C01B3/40C01B3/48C01B3/58
CPCY02P20/52
Inventor 李谦付威李强贾钰鲍正洪丁伟中周国治
Owner SHANGHAI UNIV
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