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Iron catalyst containing cobalt auxiliary agent for Fischer-Tropsch synthesis reaction and preparation method thereof

An iron catalyst, Fischer-Tropsch synthesis technology, applied in the direction of catalyst activation/preparation, liquid hydrocarbon mixture preparation, chemical instruments and methods, etc., can solve the problems of large catalyst consumption, large hydrogen consumption, low specific surface area, etc., and achieve excellent selection properties, easy reduction, and high specific surface area

Active Publication Date: 2009-12-16
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of catalyst has Fischer-Tropsch synthesis reaction activity, the target product is olefins. When the Fischer-Tropsch synthesis product is used for vehicle fuel, the subsequent hydrogenation process needs to consume a large amount of hydrogen and release a larger amount of heat, which brings operational difficulties; Since iron and cobalt form spinel, the specific surface area is very low, and the reduction is also difficult; in addition, due to the large amount of catalyst Co used above, its cost will increase greatly

Method used

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  • Iron catalyst containing cobalt auxiliary agent for Fischer-Tropsch synthesis reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take Co(NO 3 ) 2 ·6H 2 0.71g (Co) / L impregnation solution was prepared with 10.0g of O crystal. Take 200g of the catalyst A described in Example 1, add 200g of the above-mentioned impregnation solution evenly to make it just completely soak the catalyst A, place it for 2h and gently stir it to make it uniformly impregnated, after drying in an oven at 110°C, put it into a laboratory rotary roaster, Baking at 350°C for 8 hours. The catalyst contains Co:Fe=0.05%, which is counted as catalyst B. The specific surface area of ​​catalyst B is 174m 2 / g.

[0034] Table 1 lists the process conditions and corresponding results obtained by evaluating catalyst samples for fixed-bed reactions.

Embodiment 2

[0036] Take Co(NO 3 ) 2 ·6H 2 10.0 g of O crystals was used to prepare a 1.43 g / L impregnation solution. Take 200g of the catalyst A described in Example 1, add 200g of the above-mentioned impregnation solution evenly to make it just completely soak the catalyst A, place it for 2h and gently stir it to make it uniformly impregnated, after drying in an oven at 110°C, put it into a laboratory rotary roaster, Baking at 350°C for 8 hours. The catalyst contains Co:Fe = 0.10%, which is counted as catalyst C. The specific surface area of ​​catalyst C is 172m 2 / g.

[0037] Table 1 lists the process conditions and corresponding results obtained by evaluating catalyst samples for fixed-bed reactions.

Embodiment 3

[0043] Take Co(NO 3 ) 2 ·6H 2 15.0 g of O crystals was used to prepare 3.30 g (Co) / L impregnation solution. Take 250g of the catalyst D described in Example 4, add 250g of the above-mentioned impregnating solution evenly to make it just completely soak into the catalyst A, place it for 3h and gently stir it to make it uniformly impregnated, after drying in an oven at 110°C, put it into a laboratory rotary roaster, Baking at 380°C for 2 hours. The catalyst contains Co:Fe=0.23%, which is counted as catalyst E. The specific surface area of ​​the catalyst is 180m 2 / g.

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Abstract

The invention discloses an iron catalyst containing a cobalt auxiliary agent for a Fischer-Tropsch synthesis reaction and a preparation method thereof. The catalyst comprises Fe, Cu, K, Co and SiO2 in a weight ratio of 100:(0.1-10):(0.1-10):(0.01-5):(5-30). The iron catalyst containing the cobalt auxiliary agent has higher specific surface area, CO transforming activity, sintering resistance and sulfur resistance.

Description

technical field [0001] The present invention relates to a method for CO, H 2 The invention relates to a catalyst for converting mainly synthesis gas into various target hydrocarbon products through a slurry-bed Fischer-Tropsch synthesis process, and specifically relates to a cobalt-containing promoter iron catalyst for a Fischer-Tropsch synthesis reaction and a preparation method thereof. Background technique [0002] The Fischer-Tropsch catalytic synthesis process is well known to contain CO, H 2 It is an efficient way to convert mainly syngas into chemical feedstocks and liquid hydrocarbon products. Among them, the application of precipitated iron catalyst in the slurry bed Fischer-Tropsch synthesis process has been studied more, and can achieve higher catalytic activity. The basis for the preparation of precipitated iron-type catalysts comes from the iron-copper-potassium silicon-containing formula and its preparation route during World War II in Germany. It was later i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J21/08B01J37/03B01J37/08C07C1/04C10G2/00
Inventor 石玉林王鹏吕毅军公磊常鸿雁谢晶程时富
Owner CHNA ENERGY INVESTMENT CORP LTD
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