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Catalyst for preparing mixed alcohol from synthetic gas as well as preparation method and application of catalyst

A catalyst and synthesis gas technology, applied in the preparation of liquid hydrocarbon mixtures, preparation of organic compounds, chemical instruments and methods, etc., to achieve high yield and high selectivity

Active Publication Date: 2017-06-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the published patents, there are few reports on the preparation of advanced mixed alcohols by supporting cobalt-iron two-component catalysts

Method used

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  • Catalyst for preparing mixed alcohol from synthetic gas as well as preparation method and application of catalyst
  • Catalyst for preparing mixed alcohol from synthetic gas as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1000 grams of coconut shell activated carbon carrier was washed three times by boiling and washing with deionized water, and dried at 393K for 12 hours to obtain the carrier material for preparing the catalyst.

[0048] The composition of the catalyst A is 15Co0.1Fe / AC, and the AC activated carbon treated with 40-60 mesh is used as the carrier, and the preparation method of the catalyst is carried out according to the following steps. Weigh 5 grams of processed activated carbon. Weigh 4.36 g Co(NO 3 ) 2 ·6H 2 O and 0.04 g Fe(NO 3 ) 3 9H 2 O, strong They were dissolved in 4.0 g of deionized water to make a solution. The prepared solution was supported on activated carbon carrier by impregnation method. Dry in the shade at room temperature, the time is based on the time it takes for the catalyst to reach a dry state, then dry in an air atmosphere at 333K for 12 hours, then dry in an argon atmosphere at 393K for 2 hours, and finally bake in an argon atmosphere at 62...

Embodiment 2

[0050] The composition of catalyst B is 15Co0.5Fe / AC. In addition to weighing 4.38 grams of Co(NO 3 ) 2 ·6H 2 O instead of 4.36 g Co(NO 3 ) 2 ·6H 2 O, weighed 0.21 g of Fe (NO 3 ) 3 9H 2 O instead of 0.04 g Fe(NO 3 ) 3 9H 2 O outside, other steps are with embodiment 1.

Embodiment 3

[0052] The composition of catalyst C is 15Co1Fe / AC. In addition to weighing 4.41 grams of Co(NO 3 ) 2 ·6H 2 O instead of 4.36 g Co(NO 3 ) 2 ·6H 2 O, weighed 0.43 grams of Fe (NO 3 ) 3 9H 2 O instead of 0.04 g Fe(NO 3 ) 3 9H 2 O outside, other steps are with embodiment 1.

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Abstract

The invention discloses a catalyst for preparing a mixed alcohol from synthetic gas as well as a preparation method and application of the catalyst. The invention discloses a catalyst for synthesizing the mixed alcohol through CO hydrogenation; the catalyst comprises a first active component, a second active component and a carrier, wherein the first active component comprises metal cobalt and iron; the second active component comprises cobalt carbide and a cobalt-iron alloy; the carrier is active carbon. The catalyst is prepared from the following components in percentage by mass: 1 percent to 30 percent of the cobalt and 0.1 percent to 10 percent of the iron. The catalyst is prepared by adopting an immersion method; the preparation method is simple and needed catalytic reaction conditions are moderate; the catalyst has the advantages of high catalytic activity and relatively high selectivity of C2 to C18 high-grade alcohols in a product; when the catalyst provided by the invention is used, the alcohol yield of a mixed primary alcohol prepared by the synthetic gas can be improved and the catalyst has good industrial application prospect.

Description

technical field [0001] The invention relates to a catalyst for producing mixed alcohols from synthesis gas. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The present invention also relates to the application of the above catalyst in the reaction of CO hydrogenation to prepare mixed alcohols. Background technique [0004] With the depletion of petroleum resources, increasingly stringent environmental protection requirements, and increasing demand for fuel and platform chemicals, it is urgent to develop non-petroleum route chemical systems to seek partial replacement of petroleum resources. Among them, the energy structure dominated by coal and natural gas will occupy a more important position. However, my country's national conditions of rich coal and little gas will further promote the development and progress of coal chemical industry in my country. Among them, the route through the conversion of syngas is a ...

Claims

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Application Information

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IPC IPC(8): B01J27/22C10G2/00C07C29/156C07C31/04C07C31/08C07C31/10C07C31/12C07C31/125
Inventor 丁云杰杜虹朱何俊董文达
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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