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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 preparation method thereof, so as to solve the problem of catalysts for the hydration of alkylene oxide to diol in the prior art. Problems with high water ratio required and poor stability

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

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Effect test

Embodiment 1

[0031] Weigh 6 mmol of 1,3,5-tris(3-formyl-4-hydroxyphenyl)benzene and dissolve in CH 2 Cl2 Add a methanol solution containing 9 mmol ethylenediamine dropwise to it, reflux at 60°C for 1 hour and then separate, fully wash with methanol and dry; the obtained polymer is then dispersed in CH 2 Cl 2 Medium, N 2 Under atmospheric stirring, add 9mmol Co(OAc) 2 Methanol solution, separated after 10h of reaction, CH 2 Cl 2 Wash thoroughly with methanol solution and dry; then disperse the obtained product in CH 2 Cl 2 In, under stirring, drop into CH containing 9 mmol hexafluoroferrocene phosphate 2 Cl 2 The solution was separated after being stirred openly for 10 hours, washed thoroughly, and dried to obtain catalyst A.

Embodiment 2

[0033] Weigh 6 mmol of 1,3,5-tris(3-formyl-4-hydroxy-5-tert-butylphenyl)benzene and dissolve in CH 2 Cl 2 Add an ethanol solution containing 9 mmol cyclohexanediamine dropwise to it, reflux at 80°C for 1 h, then separate, wash with ethanol and dry; the obtained polymer is then dispersed in CH 2 Cl 2 In, add containing 9mmol Rh(Cl) 3 water / ethanol solution, separated after 10h of reaction, CH 2 Cl 2 and water / ethanol and dried thoroughly; the resulting product was then dispersed in CH 2 Cl 2 , drop into CH containing 9 mmol silver tetrafluoroborate under stirring 2 Cl 2 The solution was separated after reacting for 10 h, fully washed and dried to obtain catalyst B.

Embodiment 3

[0035] Weigh 2mmol of 1,3,5-tris(3-formyl-4-hydroxyphenyl)benzene and 4mmol of 1,3,5-tris(3-formyl-4-hydroxyl-5-tert-butylphenyl) ) Benzene dissolved in CH 2 Cl 2 Add dropwise an ethanol solution containing 2mmol of ethylenediamine, 3mmol of cyclohexanediamine and 4mmol of phenylenediamine to it, reflux at 80°C for 1h and then separate, fully wash with ethanol and dry; the obtained polymer is redispersed in CH 2 Cl 2 Medium, N 2 Under the atmosphere stirring, add containing 7mmol Co(OAc) 2 and 2mmol Rh(Cl) 3 Methanol solution, separated after 10h of reaction, CH 2 Cl 2 and methanol and dried thoroughly; the resulting product was then dispersed in CH 2 Cl 2 In, under stirring, CH containing 5mmol silver hexafluorophosphate and 4mmol silver tetrafluoroborate was added dropwise 2 Cl 2 solution, separated after 10 h of reaction, fully washed, and dried to obtain 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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