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Catalyst for improving syngas converted product selectivity and preparation method and application thereof

A conversion product and catalyst technology, applied in the preparation of organic compounds, preparation of liquid hydrocarbon mixtures, metal/metal oxide/metal hydroxide catalysts, etc. Alcohol selectivity is not high

Inactive Publication Date: 2016-11-23
裴彦鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is mainly aimed at the problem that the total alcohol selectivity of the cobalt-based catalyst supported by activated carbon is not high, and the distribution of alcohol is not concentrated, and the problem that although the "CoCu" catalyst has high total alcohol selectivity but the methanol component content is too high, Provide a catalyst with a unique structure and its preparation method and application, while obtaining high total alcohol selectivity, low methanol content, and relatively concentrated distribution of alcohol components

Method used

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  • Catalyst for improving syngas converted product selectivity and preparation method and application thereof
  • Catalyst for improving syngas converted product selectivity and preparation method and application thereof
  • Catalyst for improving syngas converted product selectivity and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take by weighing 3.704g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 0.755g copper nitrate (Cu(NO 3 )·3H 2 0), put into the 50mL beaker that fills 5mL aqueous solution, stir until cobalt nitrate and copper nitrate dissolve completely, add the manganese nitrate solution miscibility of 0.324g 50%. Take 5g of AC carrier, immerse the carrier in the impregnation solution containing the active component, let it stand for 1h, make the active component and co-active component loaded on the carrier by capillary action, and then dry it in the air at 60°C for 12h, the obtained sample Calcined at 350° C. for 4 h in an Ar atmosphere, and then cooled to room temperature to obtain a black sample. The above catalyst is named as A, and the catalyst composition is listed in Table 1. The physical properties of the catalysts are listed in Table 2.

[0026] Take 4mL of the above-mentioned catalyst for reduction treatment, the conditions and steps adopted are as follows: pure hydrogen with...

Embodiment 2

[0028] Take by weighing 3.704g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 0.755g copper nitrate (Cu(NO 3 )·3H 2 0), put into the 50mL beaker that fills 5mL aqueous solution, stir until cobalt nitrate and copper nitrate dissolve completely, add the manganese nitrate solution miscibility of 1.302g 50%. Take 5g of AC carrier, immerse the carrier in the impregnating liquid containing the active component, let it stand for 1 hour, make the active component and co-active component loaded on the carrier through capillary action, and then dry it in the air at 60°C for 12h, The obtained sample was calcined at a constant temperature of 350° C. for 4 h in an Ar atmosphere, and then cooled to room temperature to obtain a black sample. The above catalyst is named B, and the catalyst composition is listed in Table 1. The physical properties of the catalysts are listed in Table 2.

[0029] Take 4mL of the above-mentioned catalyst for reduction treatment, the conditions and steps adopted ...

Embodiment 3

[0031] Take by weighing 3.704g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 1.51g copper nitrate (Cu(NO 3 )·3H 2 0), put into the 50mL beaker that fills 5mL aqueous solution, stir until cobalt nitrate and copper nitrate dissolve completely, add the manganese nitrate solution miscibility of 2.605g 50%. Take 5g of AC carrier, immerse the carrier in the impregnating solution containing the active component, let it stand for 1 hour, make the active component and co-active component loaded on the carrier through capillary action, and then dry it in the air at 60°C for 12 hours, The obtained sample was calcined at a constant temperature of 350° C. for 4 h in an Ar atmosphere, and then cooled to room temperature to obtain a black sample. The above catalyst is named C, and the catalyst composition is listed in Table 1. The physical properties of the catalysts are listed in Table 2.

[0032] Take 4mL of the above-mentioned catalyst for reduction treatment, the conditions and steps ad...

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Abstract

The invention provides a catalyst for improving syngas converted product selectivity and a preparation method and application thereof, relates to a cobalt-copper-manganese catalyst taking activated carbon as a carrier, and belongs to the technical field of chemical engineering. The catalyst is prepared through a co-impregnation method and is subjected to reduction activation before using. The catalyst is prepared from, by weight, 76%-83% of carrier activated carbon (AC), 6.3%-12.5% of active component metallic cobalt (Co), 3.3%-6.3% of active component metallic copper (Cu) and 1%-8.2% of auxiliary manganese oxide (MnO). The catalyst can enable syngas to generate a linear alcohol mixture which is low in methanol content and has alcohols distributed and concentrated between C2 to C5 under proper conditions. The catalyst for improving the syngas converted product selectivity and the preparation method and application thereof have the advantages of being simple in preparation, easy to operate and low in cost and have an obvious economical benefit.

Description

technical field [0001] The invention relates to a technology for catalytic conversion of synthetic gas to liquid fuel or chemical products, which belongs to the field of energy and chemical industry. In particular, it relates to a catalyst for producing mixed alcohols and liquid hydrocarbons by catalytic conversion of synthesis gas and a preparation method thereof. Background technique [0002] Low-carbon mixed alcohol (referred to as low-carbon alcohol) refers to the 1 -C 6 A liquid mixture composed of straight chain alcohols, which can be used as alternative fuels, clean gasoline additives or chemicals and chemical raw materials. The research on the direct synthesis of low-carbon alcohols from synthesis gas began in the 1920s. The impact of the two oil crises in the 1970s and the enhancement of people's awareness of environmental protection have made the research topic of producing low-carbon alcohols from coal, natural gas or biomass through synthesis gas has received ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/10C07C29/156C07C31/08C07C31/10C07C31/12C07C31/125C10G2/00
Inventor 裴彦鹏
Owner 裴彦鹏
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