Mixed oxide catalyst for preparing highalcohol with synthesis gas

A mixed oxide and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, preparation of hydroxyl compounds, etc. And other issues

Active Publication Date: 2016-06-15
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of mixed oxide catalyst that is used for syngas

Method used

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  • Mixed oxide catalyst for preparing highalcohol with synthesis gas
  • Mixed oxide catalyst for preparing highalcohol with synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] [Example 1] Preparation of Catalyst A1

[0067] Zn(NO 3 ) 2 ·6H 2 O aqueous solution and Co(NO 3 ) 2 ·6H 2O is dissolved in a certain amount of deionized water according to the molar ratio Co / Zn=2 / 1 to form a mixed solution with a total metal concentration of 0.1mol / L, and then dissolve sodium carbonate in a certain amount of deionized water to form a concentration of 0.1 mol / L lye. Add the mother liquor, namely water, into the beaker, adjust the titration temperature to 65° C., control the titration pH=7, and co-precipitate the above two solutions in the stirred mother liquor in a co-current manner. After the titration, it was aged at 65°C for 8 hours, centrifuged and washed 6 times, dried in an oven at 80°C for 24 hours, and then transferred to a muffle furnace for 6 hours at 300°C. Catalyst A1 is obtained after calcination.

Embodiment 2

[0068] [Example 2] Preparation of Catalyst A2

[0069] 50%Mn(NO 3 ) 2 Aqueous solution and Co(NO 3 ) 2 ·6H 2 O is dissolved in a certain amount of deionized water according to the molar ratio Co / Mn=2 / 1 to form a mixed solution with a total metal concentration of 0.5mol / L, and then dissolve potassium carbonate in a certain amount of deionized water to form a concentration of 1mol / L lye. Add the mother liquor, ie water, into the beaker, adjust the titration temperature to 20° C., control the titration pH=8, and co-precipitate the above two solutions in the stirred mother liquor in a co-current manner. After the titration, it was aged at 20°C for 4h, centrifuged and washed 6 times, dried in an oven at 100°C for 12h, and then transferred to a muffle furnace for 4h roasting at 350°C. Catalyst A2 is obtained after calcination.

Embodiment 3

[0070] [Example 3] Preparation of Catalyst A3

[0071] Will Co(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O is dissolved in a certain amount of deionized water according to the molar ratio Co / Fe=4 / 1 to form a mixed solution with a total metal concentration of 1mol / L, and then dissolve sodium carbonate in a certain amount of deionized water to form a concentration of 1mol / L L lye. Add the mother liquor into the beaker, adjust the titration temperature to 40° C., control the titration pH=10, and co-precipitate the above two solutions in the stirred mother liquor in a co-current manner. After the titration, it was aged at 40°C for 10 hours, centrifuged and washed for 6 times, dried in an oven at 120°C for 12 hours, and then transferred to a muffle furnace for 8 hours at 250°C. Catalyst A3 is obtained after calcination.

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PUM

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Abstract

The invention discloses a mixed oxide catalyst for preparing highalcohol with synthesis gas. The catalyst comprises, by weight, 1-99% of a Co-based catalyst A and 99-1% of a Cu-based catalyst B. The catalyst is high in activity, total alcohol selectivity and C<2+> and C<6+> alcohol selectivity, good in stability and long in service life, the operation temperature can be maintained at 180-350 DEG C, and reaction pressure is 0.1-10 MPa. Due to the fact that catalyst preparation method of the catalyst is simple and easy to repeat, the catalyst has potential industrial application prospect.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a mixed oxide catalyst used for preparing high-carbon alcohols from synthesis gas. Background technique [0002] In recent years, with the increasing scarcity of global oil resources, coal and natural gas will gradually replace oil and occupy a dominant position in the future energy structure. "Rich in coal, low in oil, and poor in gas" is the characteristic of my country's energy structure. In order to meet the needs of the sustainable development of my country's national economy and ensure long-term energy security, it has become the consensus of my country's energy development to develop energy and chemical industries that do not depend on petroleum. [0003] The C1 chemical industry based on the catalytic conversion of syngas is an important way to realize the clean and efficient conversion of coal and natural gas. At present, based on the synthesis gas route, the main ones that hav...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/80C07C29/156C07C31/125
CPCB01J23/75B01J23/78B01J23/80B01J23/8892B01J35/0006C07C29/156C07C31/125
Inventor 孙予罕钟良枢林铁军齐行振王慧夏林吴秀章卢卫民李克健李晋平刘斌孙志强
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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