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Preparation method of catalyst for preparing diol by hydrating alkylene oxide and catalyst prepared by preparation method

An alkylene oxide water and catalyst technology, which is applied in the field of catalysts, can solve the problems of high water ratio required and the recyclability needs to be improved, and achieve the effects of high activity, excellent recyclability and excellent recyclability.

Active Publication Date: 2021-01-19
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 preparation method of a catalyst for preparing diol by hydration of alkylene oxide and the prepared catalyst, so as to solve the problem of high water ratio and recyclability in the existing technology of the catalyst for preparing diol by hydration of alkylene oxide Issues to be improved

Method used

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  • Preparation method of catalyst for preparing diol by hydrating alkylene oxide and catalyst prepared by preparation method
  • Preparation method of catalyst for preparing diol by hydrating alkylene oxide and catalyst prepared by preparation method
  • Preparation method of catalyst for preparing diol by hydrating alkylene oxide and catalyst prepared by preparation method

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 0.50g of F127, 0.6g of mesitylene and 2.5g of KCl and dissolve them in 30mL of 2M HCl aqueous solution at 16°C, stir for 2h; add 2.08g of TEOS, continue to stir at 16°C for 24h, then place in 100 ℃ water heating in oven for 24h. After it was taken out, washed and dried, it was calcined at 550°C for 6 hours to obtain the nanocage matrix material FDU-12. Weigh 0.331g of ferrocene hexafluorophosphoric acid and 0.492g of Co(N,N'-disalicylidene-1,2-cyclohexanediamine), dissolve in a mixed solution of 15mL dichloromethane and 15mL acetonitrile , stirred at room temperature for 12 hours, the solvent was spun off, and the active center Co(N,N'-disalicylidene-1,2-cyclohexanediamine)PF was obtained after fully washing and drying with n-hexane 6 . Weigh 1.0g of FDU-12, put in 6mL containing 110mg Co(N,N'-disalicylidene-1,2-cyclohexanediamine) PF 6 In the dichloromethane solution of 20 ℃ sealed stirring 2h, 20 ℃ open stirring until the solvent evaporated to dryness. Add p...

Embodiment 2

[0030] Weigh 1.0g of SBA-6 and place in 6mL containing 110mg Fe(N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cycloethylenediamine)PF 6 In the dichloromethane solution of 20 ℃ sealed stirring 2h, 20 ℃ open stirring until the solvent evaporated to dryness. Add pre-hydrolyzed methyl orthosilicate, stir for 40 minutes, add a mixture of water and methanol with a water volume percentage of 3%, centrifuge after stirring, repeat once, then fully wash with ethanol, and dry to obtain catalyst B.

Embodiment 3

[0032]Weigh 1.0g of SBA-16 and place in 6mL containing 110mg Ga(N,N'-disalicylidene-1,2-cycloethylenediamine) PF 6 In the dichloromethane solution of 20 ℃ sealed stirring 2h, 20 ℃ open stirring until the solvent evaporated to dryness. Add pre-hydrolyzed methyl orthosilicate, stir for 40 minutes, add a mixture of water and methanol with a water volume percentage of 7%, centrifuge after stirring, wash fully with methanol, and dry to obtain catalyst C.

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PUM

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Abstract

The invention relates to a preparation method of a catalyst for preparing diol by hydrating alkylene oxide. The preparation method comprises the following steps: contacting an active center M(Salen)Xand / or M'(Salen), a nanocage material NC and a solvent; removing the solvent; adding a packaging reagent for packaging; treating the product with a mixed solution of water and alcohol, and washing with alcohol; and obtaining a nanocage confinement catalyst, wherein M and M' are metal ions, Salen is a Shiff base derivative, and X is an axis anion.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for preparing diol by hydration of alkylene oxide and the prepared catalyst. Background technique [0002] As an important organic chemical raw material and intermediate, ethylene glycol is mainly used in the production of polyester fiber, bottle resin, engineering plastics, film, antifreeze and coolant, and is also widely used in the production of desiccants, plasticizers, The raw material of various chemical products such as lubricants has a wide range of uses (Guangdong Chemical Industry, 2011, 38: 242). In 2017, the global production capacity of ethylene glycol was 39.25 million tons per year, and the consumption was about 30 million tons; while the self-sufficiency rate of ethylene glycol in my country was not greater than 40.2% for a long time (http: / / www.chemsino.com / dailynews / newsview .aspx?id=499321&cataid=62). At present, the industry mainly produces ethylene glycol through direct h...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C29/10C07C31/20
CPCB01J31/22C07C29/106B01J2531/842B01J2531/845B01J2531/32B01J2531/31B01J2531/62B01J2531/0213C07C31/202C07C31/205Y02P20/52
Inventor 陶桂菊何文军金少青
Owner CHINA PETROLEUM & CHEM CORP
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