Method for preparing C4-C8 aldehydes

A technology of catalyst and composition, which is applied in chemical instruments and methods, carbon monoxide reaction preparation, organic compound/hydride/coordination complex catalyst, etc., can solve the problems of low aldehyde selectivity and low yield, and achieve high yield efficiency and selectivity, the effect of high selectivity

Inactive Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the technical problems to be solved by the present invention is that the terminal C existing in the prior art 4 ~C 8 The problem of low aldehyde selectivity and low yield provides a new catalyst composition for the preparation of terminal C 4 ~C 8 Aldehydes have terminal C 4 ~C 8 The advantages of high aldehyde selectivity and high yield; the second technical problem solved by the present invention is to provide a catalyst corresponding to one of the technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Hydroformylation of Butene to Valeraldehyde in Toluene

[0055] A 150 ml autoclave was charged with rhodium dicarbonyl acetylacetonate (0.05 mmol), trivalent ferrocene cation bis(diphenyl)phosphine hexafluorophosphonate (0.10 mmol) and ammonium hexafluorophosphate (0.05 mmol) . Add toluene (25mL) and butene (50mmol), then 2 Replacement reactor. with H 2 and CO to pressurize the reactor to 2.0 MPa and heat to 120 °C. The autoclave was stirred and maintained at 120°C for a total of 3 hours. The autoclave is then cooled, excess gas is vented, and the contents are recovered. Analysis of the content by internal standard gas chromatography revealed that the conversion of butene was 81.6%, and the selectivity to n-valeraldehyde was 91.4%.

Embodiment 2

[0057] Hydroformylation of Butene to Valeraldehyde in Toluene

[0058] A 150 ml autoclave was charged with rhodium trichloride (0.05 mmol), ferrocene cation bis(diphenyl)phosphine hexafluorophosphonate (0.10 mmol) and ammonium hexafluorophosphate (0.05 mmol). Add toluene (25mL) and butene (50mmol), then 2 Replacement reactor. with H 2 and CO to pressurize the reactor to 2.0 MPa and heat to 120 °C. The autoclave was stirred and maintained at 120°C for a total of 3 hours. The autoclave is then cooled, excess gas is vented, and the contents are recovered. Analysis of the contents by internal standard gas chromatography revealed that the conversion of butene was 79.5%, and the selectivity to n-valeraldehyde was 91.0%.

Embodiment 3

[0060] Hydroformylation of pentene to hexanal in toluene

[0061]A 150 ml autoclave was charged with rhodium dicarbonyl acetylacetonate (0.05 mmol), trivalent ferrocene cation bis(diphenyl)phosphine hexafluorophosphonate (0.10 mmol) and ammonium hexafluorophosphate (0.05 mmol). Add toluene (25mL) and pentene (50mmol), then 2 Replacement reactor. with H 2 and CO to pressurize the reactor to 2.0 MPa and heat to 120 °C. The autoclave was stirred and maintained at 120°C for a total of 3 hours. The autoclave is then cooled, excess gas is vented, and the contents are recovered. Analysis of the contents by internal standard gas chromatography revealed that the conversion of pentene was 83.6%, and the selectivity of n-hexanal was 93.7%.

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Abstract

The present invention relates to a catalyst composition and a hydroformylation process for preparation of C4-C8 aldehydes, wherein in the presence of the catalyst composition, C3-C7 olefins are subjected to hydroformylation, and the composition comprises a rhodium compound and a compound selected from high-valent metallocene cationic bisphosphine compounds. According to the present invention, the process can be used for the hydroformylation of C3-C7 olefins into C4-C8 aldehydes, has advantages of high C3-C7 olefin conversion rate and high C4-C8 aldehyde selectivity, and can be used for the industrial applications of preparation of C4-C8 aldehydes.

Description

technical field [0001] The present invention relates to a kind of method for preparing aldehyde, relate in particular to a kind of method for preparing C 4 ~C 8 Aldehyde method. Background technique [0002] Hydroformylation refers to alkenes and CO / H 2 The process of generating aldehydes under the action of catalysts is an important industrial method, and olefins can be easily synthesized by hydroformylation. Aldehydes are very valuable fine chemicals and important synthetic intermediates. It can further be easily converted into chemicals such as alcohols, acids, esters, Aldol condensation products, acetals, etc. These chemicals are the main raw materials for the synthesis of various detergents, surfactants, medicines, fragrances and other high value-added fine chemicals. Since terminal aldehydes have greater industrial applicability, it is hoped to optimize the process to obtain terminal aldehydes with high conversion and high selectivity. For example, the terminal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C47/02C07C45/50B01J31/24
CPCC07C45/50B01J31/2404B01J2231/321B01J2531/822B01J2531/842C07C47/02
Inventor 刘旭刘仲能顾松园
Owner CHINA PETROLEUM & CHEM CORP
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