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Method for preparing 3-pentanone and propanal through using H2, CO and ethylene

A technology of ethylene and pentanone is applied in the field of preparing 3-pentanone and propionaldehyde to achieve the effect of reducing reaction pressure and energy consumption

Active Publication Date: 2013-05-08
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above catalysts all use noble metals

Method used

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  • Method for preparing 3-pentanone and propanal through using H2, CO and ethylene
  • Method for preparing 3-pentanone and propanal through using H2, CO and ethylene
  • Method for preparing 3-pentanone and propanal through using H2, CO and ethylene

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Experimental program
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Effect test

Embodiment 1

[0019] The catalyst used is 0.9%K-15%Co-0.66%P / coconut shell activated carbon (Co / P=12 molar ratio). The weight composition of the catalyst is: Co=15%, K=0.9%, P=0.66%, and the rest is carrier activated carbon. The carrier adopts commercial coconut shell carbon, and the catalyst active components Co and P and the auxiliary agent K are loaded on the carrier activated carbon by conventional impregnation method. Specifically, weigh 10.0 grams of coconut shell charcoal (20-40 mesh, BET specific surface area: 1135m 2 / g, the average pore size is 21nm), the configuration 8ml contains 7.80 grams of Co(NO 3 ) 2 .6H 2 O, 0.3 g (NH 4 ) 2 HPO 4 and 0.216 g KNO 3 aqueous solution, drop about 2ml of concentrated HNO 3 , heat to dissolve, impregnate the coconut shell charcoal carrier with this aqueous solution, dry in a water bath at 60°C, and dry in an oven at 80°C for 8 hours. Before the precursor of the above-mentioned catalyst is used, take 5ml (3.4 grams) of the above-mentione...

Embodiment 2

[0026] The catalyzer that adopts is that 5%K-25%Co-1.1%P / almond kernel charcoal (Co / P=12 mol ratio) is catalyzer, and other conditions are identical with embodiment 1.

Embodiment 3

[0028] Adopting reaction temperature is 100 ℃, other conditions are identical with embodiment 1.

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Abstract

The invention provides a method for preparing 3-pentanone and propanal through using H2, CO and ethylene. The method for preparing 3-pentanone and propanal through using H2, CO and ethylene is characterized in that a reaction system is composed of CO, H2, ethylene and a catalyst; the reaction temperature is 80-180DEG C, the reaction pressure is 0.05-8.0MPa, the air speed of a mixed gas comprising CO, H2 and ethylene is 500-5000h<-1>, and the molar ratio of H2 / CO / ethylene is 1 / 1 / 3-3 / 3 / 1; the catalyst is composed of a carrier, a primary active component and an assistant, the carrier is active carbon, the primary active component comprises one or more of cobalt phosphides, and the assistant comprises one or more of metals in alkali metals, such as K, Na and Li, or oxides thereof; and the mixed gas comprising CO, H2 and ethylene can be converted into 3-pentanone and propanal in a high activity and high selectivity manner under the action of the catalyst.

Description

technical field [0001] The invention relates to a reaction method for preparing 3-pentanone and propionaldehyde by using hydrogen, carbon monoxide and ethylene as raw materials. More specifically, the present invention relates to a hydroformylation reaction method for converting H2, CO and ethylene mixed gas into 3-pentanone and propionaldehyde in the presence of a catalyst in a fixed-bed reactor. technical background [0002] 3-Pentanone is an important fine chemical raw material and high-grade solvent, widely used in the synthesis of dyes, medicines and pesticides, as well as organic solvents. As a key intermediate in the production of the pesticide herbicide pendimethalin and the anti-avian flu drug Tamiflu, the amount of 3-pentanone is increasing year by year. The methods for synthesizing 3-pentanone include: 3-pentanol oxidation method, methyl ethyl ketone and methanol one-step method, methanol butanone one-step method, piperylene method, acid-acid method, etc. In rec...

Claims

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Application Information

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IPC IPC(8): C07C47/02C07C49/04C07C45/50
Inventor 丁云杰宋宪根吕元陈维苗
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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