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Heterogeneous catalyst for synthesizing aldehydes and alcohols through olefin hydroformylation, and preparation method thereof

A technology for olefin hydroformylation to synthesize aldehydes and heterogeneous catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, carbon oxide reduction preparation, etc., can solve the problems of low hydroformylation activity and selectivity, and catalyst It is difficult to separate the product from the product, etc., to achieve high hydroformylation activity and selectivity, easy separation, avoid separation of the catalyst and the product, and the effect of recycling

Active Publication Date: 2015-05-06
中科榆林能源技术运营有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention aims at the prominent problem of difficult separation of catalyst and product in the existing homogeneous hydroformylation technology of olefins, as well as the low hydroformylation activity and selectivity of the existing heterogeneous hydroformylation catalytic method problem, using activated carbon to support metal Co and Co 2 C heterogeneous catalyst, and by increasing the carbonization step in the catalyst preparation method, and by adjusting the conditions of catalyst roasting and reduction activation, mainly adjusting the conditions of carbonization, and regulating the Co in the catalyst 2 C content, regulating Co 2 The ratio of the two crystal phases of C and metallic Co improves the performance of the catalyst for olefin hydroformylation

Method used

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  • Heterogeneous catalyst for synthesizing aldehydes and alcohols through olefin hydroformylation, and preparation method thereof
  • Heterogeneous catalyst for synthesizing aldehydes and alcohols through olefin hydroformylation, and preparation method thereof
  • Heterogeneous catalyst for synthesizing aldehydes and alcohols through olefin hydroformylation, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0072] The specific surface area and pore size distribution of coconut shell activated carbon were measured on the AS-1 adsorption instrument of QUANTACHROME Company. The samples were first degassed at 623K for 3 hours, and nitrogen adsorption tests were performed at liquid nitrogen temperature. The BET method was used to calculate the specific surface area of ​​the samples, and the BJH method was used to calculate the pore distribution. The measured specific surface area of ​​apricot shell activated carbon is 1056m 2 / g, the average pore diameter is 3.4nm, and the pore volume is 0.45mL / g.

[0073] Take 1000 grams of coconut shell activated carbon carrier, and use deionized water to boil and wash for 6 times. The specific method is: take 1000 grams of coconut shell activated carbon, add 8000 grams of deionized water, and boil for 0.5 hours, and then separate the activated carbon from the boiling water. Add deionized water again for the next boil wash. The washed activated c...

Embodiment 2

[0077] With the coconut shell activated carbon handled in embodiment 1 as carrier, prepare catalyst B according to the following steps: take by weighing 8.7 grams of Co(NO 3 ) 2 ·6H 2 O, dissolved in 10 mL deionized water to make a solution. Weigh 10 grams of treated activated carbon, and impregnate the prepared solution on the activated carbon by conventional impregnation method, that is, soak the activated carbon in the prepared solution at room temperature, and stir for 1 to 2 minutes, so that the solution is evenly impregnated on the activated carbon. on the carrier. Dry at 353K for 24 hours in air atmosphere to prepare catalyst inorganic salt precursor. 4 mL of catalyst inorganic salt precursor was loaded into a fixed-bed reactor for hydroformylation reaction, and the steps of drying, roasting, reduction activation and carbonization were performed in situ in sequence. The specific conditions are: drying at 393K in nitrogen atmosphere for 4 hours, nitrogen pressure at ...

Embodiment 3

[0079] With the coconut shell activated carbon handled in embodiment 1 as carrier, prepare catalyst C according to the following steps: take by weighing 8.7 grams of Co(NO 3 ) 2 ·6H 2 O, dissolved in 10 mL deionized water to make a solution. Weigh 10 grams of treated activated carbon, and impregnate the prepared solution on the activated carbon by conventional impregnation method, that is, soak the activated carbon in the prepared solution at room temperature, and stir for 1 to 2 minutes, so that the solution is evenly impregnated on the activated carbon. on the carrier. Dry at 353K for 24 hours in air atmosphere to prepare catalyst inorganic salt precursor. 4 mL of catalyst inorganic salt precursor was loaded into a fixed-bed reactor for hydroformylation reaction, and the steps of drying, roasting, reduction activation and carbonization were performed in situ in sequence. The specific conditions are: drying in a nitrogen atmosphere at a temperature of 393K for 4 hours, a ...

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Abstract

The present invention provides a heterogeneous catalyst for synthesizing aldehydes and alcohols through olefin hydroformylation, and a preparation method thereof. The catalyst is a loaded heterogeneous catalyst and comprises a main active component, a carrier and an optionally selected auxiliary agent, wherein the main active component is Co2C or a compound of Co2C and a metal Co, the Co2C weight content in the compound is 40-100%, the carrier is active carbon, the auxiliary agent is one or more selected from Cu, La, Ce, Li and Sr, and the olefin is C2-C18 alpha-olefin. The preparation method comprises: adopting an impregnation method to impregnate the main active component and the soluble inorganic salt solution of the optionally selected auxiliary agent onto the active carbon carrier, drying, calcinating, reducing, and carbonizing to obtain the heterogeneous catalyst. The heterogeneous catalyst of the present invention has characteristics of high hydroformylation activity and selectivity, easy separation from the product, avoidance of the problems of catalyst and production separation and recycling caused by the routine use of the homogeneous catalyst, and broad industrial application prospects.

Description

field of invention [0001] The invention relates to the field of catalysts, in particular to a heterogeneous catalyst for olefin hydroformylation to synthesize aldehydes and alcohols and a preparation method thereof. Background technique [0002] Olefins and Syngas (CO+H 2 ) hydroformylation reaction to prepare aldehydes with one carbon higher than the raw material olefins is the earliest homogeneous catalytic process for industrial production, and it is also one of the most important organic chemical production processes today. The products of hydroformylation cover aldehydes with different carbon numbers, and then undergo simple hydrogenation to obtain alcohols. Among them, butyraldehyde is produced by hydroformylation of propylene, and then the important plasticizer 2-ethylhexanol is obtained through condensation. In addition, high-carbon plasticizers synthesized from high-carbon olefins (C≥6) Alcohol (C 8 -C 11 ) and higher carbon detergent alcohols (C 12 -C 18 ) oc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22C07C27/22C07C47/02C07C45/50C07C31/125C07C29/16
Inventor 丁云杰董文达朱何俊裴彦鹏王涛严丽
Owner 中科榆林能源技术运营有限责任公司
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