High-performance catalyst for preparing diol by hydrating epoxyalkane, preparation method and application

A technology of alkylene oxide water and catalyst, which is applied in the field of high-performance catalyst, preparation and application of alkylene oxide hydration to diol, can solve the problems of high water ratio and poor stability, and solve the problems of high water ratio and poor stability , excellent recycling effect

Pending Publication Date: 2021-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a catalyst with high activity and stability for the hydration of alkylene oxide to diol under high and low water ratios and a preparati

Method used

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  • High-performance catalyst for preparing diol by hydrating epoxyalkane, preparation method and application
  • High-performance catalyst for preparing diol by hydrating epoxyalkane, preparation method and application
  • High-performance catalyst for preparing diol by hydrating epoxyalkane, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1】

[0031] 6Mmol 1,3,5-three (3-formyl-4-hydroxyphenyl) benzene is soluble in CH 2 CL2 In the middle, the methanol solution containing 9 mmol ethylenediamine is dripped, and the separation is separated after 60 ° C for 1 h, and the methanol is sufficiently washed and dried; the obtained polymer is again dispersed to CH 2 CL 2 Medium N 2 Add 9 mmol Co (OAC) with stirring 2 The methanol solution, the reaction is separated after 10 h, CH 2 CL 2 And the methanol solution is thoroughly washed and dried; then the resulting product is dispersed in CH 2 CL 2 In the middle, stirring with a 9 mmol hexafluorophosphate atrium iron 2 CL 2 After the solution, the open was stirred for 10 h, isolated, thoroughly washed, dried to the catalyst A.

Example Embodiment

[0032] [Example 2]

[0033] 6 mmol of 1,3,5-tris (3-formyl-4-hydroxy-5 tert-butylphenylphenyl) benzene is soluble in CH 2 CL 2 In the middle, the ethanol solution containing 9 mmol of cyclohexamethylene is dried, and the separation is performed after 80 ° C for 1 h, and the ethanol is thoroughly washed and dried; the resulting polymer is again dispersed to CH 2 CL 2 In the addition of 9mmol RH (CL) 3 Water / ethanol solution, after 10 h, Chromatography, CH 2 CL 2 And water / ethanol is thoroughly washed and dried; then the resulting product is dispersed in CH 2 CL 2 In the mixing, the silver-containing CH is added to silver boricrate. 2 CL 2 The solution, the reaction was separated, thoroughly washed, and the catalyst B was dried.

Example Embodiment

[0034] [Example 3]

[0035] 3, 3,5- Trim (3-formyl-4-hydroxyphenyl) benzene and 4 mmol of 1,3,5-tenth (3-formyl-4-hydroxy-5 tert-butylphenyl) ) Benzein in CH 2 CL 2 The ethanol solution containing 2 mmol ethylenediamine, 3 mmol cyclohexameamine and 4 mMol phenylene, and separated after 80 ° C for 1 h, and dried over 80 ° C. The obtained polymer is then dispersed to CH. 2 CL 2 Medium N 2 Add 7 mmol Co (OAC) with stirring 2 And 2mmol RH (CL) 3 The methanol solution, the reaction is separated after 10 h, CH 2 CL 2 Wash with methanol and dry; then the resulting product is dispersed in CH 2 CL 2 In the mixing, the mixture is added to silver and 4 mmol tetrafluororate silver. 2 CL 2 The solution, the reaction was separated, fully washed well, dry the catalyst C.

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Abstract

The invention relates to a high-performance catalyst for preparing diol by hydrating epoxyalkane, a preparation method and application of the catalyst. The catalyst is a polymer catalyst, and the polymer is prepared by polymerizing diamine with at least one monomer selected from 1,3,5-tri(3-formyl-4-hydroxyphenyl)benzene or substituted 1,3,5-tri(3-formyl-4-hydroxyphenyl)benzene and then conducting reacting with a metal salt. The catalyst has high activity and stability for preparing the diol by hydrating the epoxyalkane under high and low water ratios, and has excellent recyclability without activation, so that the problems of high required water ratio and poor stability of the catalyst for preparing the diol by hydrating the epoxyalkane in the prior art are solved.

Description

technical field [0001] The invention relates to a catalyst, preparation method and application of alkylene oxide hydration to diol. Background technique [0002] Ethylene glycol is an important organic chemical raw material and intermediate with a wide range of uses. It is mainly used in the production of polyester fibers, engineering plastics, bottle resins, films, antifreeze and coolants. It is also commonly used as plasticizers, drying Raw materials for the production of various chemical products such as lubricants and lubricants (Guangdong Chemical Industry, 2011, 38: 242). In 2017, the global production capacity of ethylene glycol was as high as 39.25 million tons per year, and the consumption was nearly 30 million tons; and the self-sufficiency rate of ethylene glycol in my country did not exceed 41% for a long time (http: / / www.chemsino.com / dailynews / newsview. aspx?id=499321&cataid=62). At present, the industrial production of ethylene glycol is mainly through the dir...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C29/10C07C31/20
CPCB01J31/223B01J31/1805C07C29/106B01J2531/842C07C31/205C07C31/202Y02P20/52
Inventor 陶桂菊尚大伟何文军戈军伟
Owner CHINA PETROLEUM & CHEM CORP
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