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Catalyst composition and preparation method of 2-butenoic acid

A technology of composition and catalyst, applied in chemical instruments and methods, carbon monoxide reaction to prepare carboxylic acid, physical/chemical process catalyst, etc., can solve the problems of low conversion rate of propyne and low selectivity of 2-butenoic acid, and achieve Improve the conversion rate and the effect of good technical effect

Active Publication Date: 2018-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the problem of low propyne conversion rate and low selectivity of 2-butenoic acid in the preparation of 2-butenoic acid by propyne route in the prior art, and a catalyst composition is provided, which is used for propyne The alkyne route to 2-butenoic acid has the advantages of high conversion of propyne and high selectivity of 2-butenoic acid

Method used

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  • Catalyst composition and preparation method of 2-butenoic acid
  • Catalyst composition and preparation method of 2-butenoic acid
  • Catalyst composition and preparation method of 2-butenoic acid

Examples

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Embodiment 1

[0041] 1. Ligand synthesis

[0042] Dissolve 50 mmol of newly prepared lithrocene or titanocene in anhydrous ether, cool the system to -30°C, add 50 mmol of diphenylphosphine chloride, and stir at room temperature for 2 hours. Diatomaceous earth was filtered, and the filtrate was cooled to -78°C, and 50 mmol of titanium ethoxide in anhydrous ether solution was added dropwise, and the mixture was allowed to return to room temperature naturally, and stirred for 2 hours. Add 25mmol ferrous chloride, and reflux for 12 hours. Cool the solution to room temperature, add 60mmol p-benzoquinone or perchloroethane, react for 10 minutes, distill off the solvent under reduced pressure, dissolve the residue with dichloromethane, filter with diatomaceous earth, evaporate the solvent under reduced pressure, and dissolve the residue in acetone Add 75mmol sodium hexafluorophosphate, then add water, extract with dichloromethane, drop the solution into ether, filter to obtain a solid, and then r...

Embodiment 2

[0049] 1. Ligand synthesis

[0050] Dissolve 50 mmol of newly prepared lithrocene or titanocene in anhydrous ether, cool the system to -30°C, add 50 mmol of diphenylphosphine chloride, and stir at room temperature for 2 hours. Diatomaceous earth was filtered, and the filtrate was cooled to -78°C, and 50 mmol of titanium ethoxide in anhydrous ether solution was added dropwise, and the mixture was allowed to return to room temperature naturally, and stirred for 2 hours. Add 25mmol cobaltous chloride, and reflux for 12 hours. Cool the solution to room temperature, add 60mmol p-benzoquinone or perchloroethane, react for 10 minutes, distill off the solvent under reduced pressure, dissolve the residue with dichloromethane, filter with diatomaceous earth, evaporate the solvent under reduced pressure, and dissolve the residue in acetone , add 75mmol sodium hexafluorophosphate, then add water, extract with dichloromethane, drop the solution into diethyl ether, filter to obtain a solid...

Embodiment 3

[0054] 1. Ligand synthesis

[0055] Dissolve 50 mmol of newly prepared lithrocene or titanocene in anhydrous ether, cool the system to -30°C, add 50 mmol of diphenylphosphine chloride, and stir at room temperature for 2 hours. Diatomaceous earth was filtered, and the filtrate was cooled to -78°C, and 50 mmol of titanium ethoxide in anhydrous ether solution was added dropwise, and the mixture was allowed to return to room temperature naturally, and stirred for 2 hours. Add 25 mmol of nickel chloride, and reflux for 12 hours. Cool the solution to room temperature, add 60mmol p-benzoquinone or perchloroethane, react for 10 minutes, distill off the solvent under reduced pressure, dissolve the residue with dichloromethane, filter with diatomaceous earth, evaporate the solvent under reduced pressure, and dissolve the residue in acetone Add 75mmol sodium hexafluorophosphate, then add water, extract with dichloromethane, drop the solution into ether, filter to obtain a solid, and the...

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Abstract

The invention relates to a catalyst composition and a preparation method of 2-butenoic acid, and mainly solves the problems that in the prior art, the propine conversion rate is low, and the selectivity of 2-butenoic acid is low. According to the technical scheme, the catalyst composition includes a rhodium complex and a high-valence metallocene cation diphosphine compound. By means of the catalyst composition, the technical problems are well solved, and the catalyst composition can be used in industrial production of 2-butenoic acid.

Description

technical field [0001] The invention relates to a catalyst composition, in particular to a catalyst composition for preparing 2-butenoic acid, and also to a preparation method of 2-butenoic acid. Background technique [0002] 2-Butenoic acid is an unsaturated fatty acid, which contains double bonds and carboxyl groups in the molecule, so it has strong reactivity and has a wide variety of uses in industry, mainly for the preparation of various resins, fungicides, surface coatings, Fungicides, plasticizers; as important pharmaceutical intermediates, pesticide intermediates and other organic chemical intermediates. Its most important use is as a raw material for polyvinyl acetate coatings. In addition, vinyl acetate-2-butenoic acid copolymer can be used as a hot-melt adhesive for bookbinding, as well as a coating for wallpaper and paper, an adhesive for laminates, a film developer, and an electrostatic copy solution component. . 2-butenoic acid peroxide is a catalyst for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/24B01J31/22C07C51/14C07C57/08
CPCB01J31/2208B01J31/2404B01J2231/321B01J2531/0225B01J2531/0238B01J2531/822C07C51/14C07C57/08
Inventor 刘仲能刘旭王燕波刘革
Owner CHINA PETROLEUM & CHEM CORP
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