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Catalyst for hydration of epoxy compound to diol and its application

A technology of epoxy compounds and catalysts, which is applied in the direction of organic compound/hydride/coordination complex catalysts, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve problems such as high cost, poor catalyst stability, and cumbersome preparation steps. Achieve the effect of easy separation, easy preparation and good selectivity

Active Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the prior art has problems such as poor stability of the catalyst, cumbersome preparation steps, and high cost.

Method used

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  • Catalyst for hydration of epoxy compound to diol and its application
  • Catalyst for hydration of epoxy compound to diol and its application
  • Catalyst for hydration of epoxy compound to diol and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of the catalyst in the present invention.

[0038]Mix 1 g of sodium dodecylbenzene sulfonate with 0.27 g of tert-butyl methacrylate, 0.28 g of n-butyl methacrylate, 0.33 g of ethylene glycol dimethacrylate, 59 mg of glucose pentaacetate and 20 mg of peroxide Lauroyl was dissolved in 1ml of chloroform to obtain a mixed solution; 1g of hexadecyltrimethyl-p-toluenesulfonium was mixed with 0.27g of tert-butyl methacrylate, 0.28g of n-butyl methacrylate, 0.33g of dimethyl methacrylate Ethylene glycol acrylate, 59 mg of glucose pentaacetate and 25 mg of 4,4'-methylenebis(N,N-dimethylaniline) were dissolved in 1 ml of chloroform to obtain a mixed solution. After volatilizing the solvent in the two mixed solutions and draining the mixture, the mixture was dissolved in 100 ml of 10% Co(Salen)-OTS chloroform solution, and the solution containing sodium dodecylbenzene sulfonate and the solution containing hexadecyl The trimethyl-p-toluenesulfonium ammonium solution wa...

Embodiment 2

[0040] Mix 1 g of sodium dodecylbenzene sulfonate with 0.27 g of tert-butyl methacrylate, 0.28 g of n-butyl methacrylate, 0.33 g of ethylene glycol dimethacrylate, 59 mg of glucose pentaacetate and 20 mg of peroxide Lauroyl was dissolved in 1ml of chloroform to obtain a mixed solution; 1g of hexadecyltrimethyl-p-toluenesulfonium was mixed with 0.27g of tert-butyl methacrylate, 0.28g of n-butyl methacrylate, 0.33g of dimethyl methacrylate Ethylene glycol acrylate, 59 mg of glucose pentaacetate and 25 mg of 4,4'-methylenebis(N,N-dimethylaniline) were dissolved in 1 ml of chloroform to obtain a mixed solution. After volatilizing the solvent in the two mixed solutions and draining to obtain the solid phase, they were dissolved in 100 ml of 20% Co(Salen)-OTS chloroform solution, respectively, and the solution containing sodium dodecylbenzenesulfonate and the solution containing hexadecylbenzene sulfonate were mixed. The alkyl trimethyl-p-toluenesulfonic acid ammonium solution was m...

Embodiment 3

[0042] Mix 1 g of sodium dodecylbenzene sulfonate with 0.27 g of tert-butyl methacrylate, 0.28 g of n-butyl methacrylate, 0.33 g of ethylene glycol dimethacrylate, 59 mg of glucose pentaacetate and 20 mg of peroxide Lauroyl was dissolved in 1ml of chloroform to obtain a mixed solution; 1g of hexadecyltrimethyl-p-toluenesulfonium was mixed with 0.27g of tert-butyl methacrylate, 0.28g of n-butyl methacrylate, 0.33g of dimethyl methacrylate Ethylene glycol acrylate, 59 mg of glucose pentaacetate and 25 mg of 4,4'-methylenebis(N,N-dimethylaniline) were dissolved in 1 ml of chloroform to obtain a mixed solution. After volatilizing the solvent in the two mixed solutions and draining to obtain the solid phase, they were dissolved in 100 ml of 30% Co(Salen)-OTS chloroform solution, respectively, and the solution containing sodium dodecylbenzenesulfonate and the solution containing hexadecylbenzene sulfonate were mixed. The alkyl trimethyl-p-toluenesulfonic acid ammonium solution was m...

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Abstract

The invention discloses a composite solid catalyst of confined high-efficiency M(salen) metal complex in a nano-reactor and its application in preparing diol by hydration of epoxy compound. The catalytic system can be labeled as M(salen) / PN, where M is a metal ion and PN is a hollow polymer. The loading of M(salen) in the molecular sieve is 0.1%-20%. The method has good operational convenience and repeatability, and at the same time shows good catalytic performance in the reaction, is easy to recycle, and can be used for industrial production.

Description

technical field [0001] The present invention relates to a confined composite heterogeneous catalyst and its application in the reaction of epoxy compound hydration to diol. Background technique [0002] Ethylene glycol is a very important organic chemical raw material, mainly used in the production of polyester (resin, fiber and plastic) and as antifreeze and coolant. The direct hydration of ethylene oxide to ethylene glycol is the main technology for ethylene glycol production today. This technique requires the reaction to be carried out under the conditions of 190-200°C, greater than 1.9 MPa, and a feed molar ratio of water and ethylene oxide of 22-25:1. Its biggest disadvantage is that the energy consumption of subsequent water separation is high, and the energy consumption of producing 1 ton of ethylene glycol is as high as 6.1×10 9 Joule, the reaction efficiency is low, the residence time is longer than 25min, and the selectivity of ethylene glycol is only 88-91%. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C29/10C07C31/20C07C31/42C07C33/26C07C35/14
CPCC07C29/103C07C29/106B01J31/06B01J31/2217B01J35/0013B01J35/023B01J2531/0252B01J2531/845C07C31/202C07C31/42C07C33/26C07C35/14C07C31/205Y02P20/584
Inventor 戈军伟何文军李骏
Owner CHINA PETROLEUM & CHEM CORP
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