Catalyst for preparing synthetic gas by reforming of methane and carbon dioxide as well as preparation method and application of catalyst

A carbon dioxide and catalyst technology, applied in the field of catalyst preparation, can solve the problems of high catalyst cost, complicated preparation process, easy carbon deposition and deactivation, etc., and achieve the effects of high selectivity, good catalytic performance and developed pores

Active Publication Date: 2014-05-28
岳阳振兴中顺新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tested catalyst has a long service life, but the preparation process of this method is complicated and the cost is high
[0009] The above-mentioned catalysts have many problems such as high cost, complicated preparation process, easy carbon deposition and deactivation, easy sintering, and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of activated carbon:

[0036]Oxidize 30g lignite in the air at 70°C, wash, dry, and pulverize, and sieve into 250-mesh carbon powder (A); wash and dry 45g corn cobs, vacuum carbonize at 230°C, pulverize, and sieve into 250-mesh carbon powder Powder (B); mix (A) and (B) at 40%:60%, then soak in 1.25mol / L potassium carbonate solution for 10h, suction filter and dry to get (C). (C) was activated by heating charcoal in a tube furnace under nitrogen and oxygen barrier conditions, the charcoal activation temperature was 500°C, the heating rate was 10°C / min, and the activation time was 2h. Then it was washed with distilled water until the pH was 7.5, and dried at 100° C. for 10 h to obtain 27.75 g of activated carbon.

[0037] (2) Preparation of supported catalyst:

[0038] Weigh 20g of activated carbon, and ultrasonically impregnate it in a solution of 1.05mol / L cobalt nitrate hexahydrate, 0.15mol / L zirconium nitrate pentahydrate and 0.03mol / L ammonium hepta...

Embodiment 2

[0043] (1) Preparation of activated carbon:

[0044] Oxidize 30g lignite in the air at 70°C, wash, dry, and pulverize, and sieve into 250 mesh carbon powder (A); wash and dry 75g corncobs, vacuum carbonize at 230°C, pulverize, and sieve into 250 mesh Powder (B); mix (A) and (B) at 28.5%: 71.5%, then soak in 1.27mol / L potassium carbonate solution for 10h, filter with suction and dry to get (C). (C) was activated by heating charcoal in a tube furnace under nitrogen and oxygen barrier conditions, the charcoal activation temperature was 500°C, the heating rate was 10°C / min, and the activation time was 2h. Then it was washed with distilled water until the pH was 7.5, and dried at 100° C. for 10 h to obtain 33.2 g of activated carbon.

[0045] (2) Preparation of supported catalyst:

[0046] Weigh 20g of activated carbon, and ultrasonically impregnate it in a solution of 1.12mol / L cobalt nitrate hexahydrate, 0.15mol / L zirconium nitrate pentahydrate and 0.03 mol / L ammonium heptamoly...

Embodiment 3

[0051] (1) Preparation of activated carbon:

[0052] Oxidize 30g lignite in the air at 70°C, wash, dry, and crush, and sieve into 250 mesh carbon powder (A); wash and dry 110g corncobs, vacuum carbonize at 230°C, crush, and sieve into 250 mesh Powder (B); mix (A) and (B) at a ratio of 22%: 78%, then soak in 1.30mol / L potassium carbonate solution for 10h, filter and dry to obtain (C). (C) was activated by heating charcoal in a tube furnace under nitrogen and oxygen barrier conditions, the charcoal activation temperature was 500°C, the heating rate was 10°C / min, and the activation time was 2h. Then it was washed with distilled water until the pH was 7.5, and dried at 100° C. for 10 h to obtain 43.5 g of activated carbon.

[0053] (2) Preparation of supported catalyst:

[0054] Weigh 20g of activated carbon, and ultrasonically impregnate it in a solution of 1.20mol / L cobalt nitrate hexahydrate, 0.15mol / L zirconium nitrate pentahydrate and 0.03 mol / L ammonium heptamolybdate tetr...

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PUM

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Abstract

The invention discloses a catalyst for preparing synthetic gas by reforming of methane and carbon dioxide as well as a preparation method and application of the catalyst, and belongs to the technical field of preparing catalysts. The catalyst is characterized in that activated charcoal is adopted as a carrier, multi-metal matters of cobalt, zirconium and molybdenum are adopted as active matters, wherein the content of the activated charcoal is 80-89%; the content of the multi-metal matters of cobalt, zirconium and molybdenum is 11-20%. Raw materials preparing the activated charcoal are broad in source, low in price and easy to obtain; the prepared activated charcoal has good pore structures and large specific surface area and strong sticking function to active matters; the prepared multi-metal catalyst of cobalt, zirconium and molybdenum is favorable in catalytic performance; under normal pressure and at a temperature of 750 DEG C, conversion rate of methane reaches to above 90%; conversion rate of carbon dioxide reaches to above 87%; after a service life test of 300 hours, the catalyst performs excellent catalytic activity and stability.

Description

technical field [0001] The invention relates to a catalyst for producing synthesis gas by reforming methane and carbon dioxide, a preparation method and application thereof, and belongs to the technical field of catalyst preparation. Background technique [0002] Methane is the main component of natural gas. Compared with petroleum, my country has relatively abundant natural gas resources. Carbon dioxide is one of the main causes of global climate deterioration caused by the greenhouse effect. Therefore, comprehensive utilization of CH 4 and CO 2 The reforming of synthesis gas to generate H 2 And CO, not only can make rational use of abundant natural gas and carbon dioxide resources, but also can alleviate the greenhouse effect caused by carbon dioxide emissions, which plays an important role in reducing the deterioration of the environment. Therefore, the reforming of carbon dioxide and methane to produce syngas is of great significance to alleviate the energy crisis. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882C01B3/40
CPCY02P20/52
Inventor 张国杰屈江文苏爱婷杜延年张永发丁光月
Owner 岳阳振兴中顺新材料科技股份有限公司
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