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Catalyst for low-carbon mixed alcohol synthesis from syngas, and preparation method and application thereof

A low-carbon mixed alcohol and synthesis gas technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of active component agglomeration, achieve high selectivity, high total alcohol selectivity, Good running stability

Inactive Publication Date: 2012-04-18
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is mainly aimed at the problem of serious agglomeration of active components of non-supported molybdenum carbide-based catalysts, using surface carbon-modified SBA-15 as a carrier to provide a catalyst with good dispersibility and its preparation method and application

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  • Catalyst for low-carbon mixed alcohol synthesis from syngas, and preparation method and application thereof
  • Catalyst for low-carbon mixed alcohol synthesis from syngas, and preparation method and application thereof
  • Catalyst for low-carbon mixed alcohol synthesis from syngas, and preparation method and application thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the examples, and the present invention includes but not limited to the following examples.

[0023] Weigh 4.0g of P123 into a 250mL beaker, add 90mL of deionized water and stir, pour it into a 500mL three-necked flask after it is completely dissolved, transfer 60g of hydrochloric acid (4M), and continue stirring in a 40°C constant temperature water bath for 0.50h . Weigh 8.50g of TEOS, and slowly add TEOS dropwise into the three-necked flask with a constant pressure funnel, and the dropwise addition time is 1h; after the dropwise addition, continue to stir for 23h. The solution in the three-neck flask was transferred into a stainless steel reaction kettle (Teflon bottle) with a polytetrafluoroethylene substrate, and was placed in a constant temperature drying oven at 100° C. for 24 hours for crystallization. Take out the Teflon bottle, cool to room temperature naturally, filter the solution in t...

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Abstract

The invention provides a molybdenum carbide-based catalyst for low-carbon alcohol synthesis from syngas, and a preparation method and reaction conditions thereof. The catalyst uses surface carbon-modified SBA-15 as the carrier. The surface carbon-modified SBA-15 mesoporous material is prepared by using low-cost ethyl orthosilicate as the silicon source and saccharide as the carbon source, and is used as the carrier; and by using the carbon on the surface as the reducer and carbonizer, the molybdenum carbide-based catalyst for alcohol synthesis from syngas is prepared through high-temperature carbonization under inert gas atmosphere. The introduction of the carrier improves the dispersion degree of active components of the catalyst; and the prepared catalyst has the characteristics of high total alcohol selectivity, high C2+ alcohol selectivity and good reaction stability.

Description

technical field [0001] The invention relates to a technology for producing liquid fuel or chemical products by catalytic conversion of synthesis gas, which belongs to the field of energy and chemical industry. It is mainly applicable to the catalytic conversion of synthesis gas (carbon monoxide and hydrogen) to produce low-carbon mixed alcohols, and provides the preparation method and catalytic reaction conditions of the catalyst. Background technique [0002] Low-carbon mixed alcohol (referred to as low-carbon alcohol) refers to the 1 -C 6 The research on the direct synthesis of low-carbon mixed alcohols from syngas began in 1920. The impact of the two oil crises in the 1970s and the enhancement of people's awareness of environmental protection made it a C 1 One of the important research content of chemistry. Alcohol fuel has full combustion, high efficiency, CO and NO x And the advantages of less hydrocarbon emissions (Chianelli RR, et al. Catal. Today. 1994, 22, 361-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/156C07C31/02C07C31/08B01J29/035
Inventor 苏海全史雪敏杨绪壮胡瑞珏瑙莫汗
Owner INNER MONGOLIA UNIVERSITY
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