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Preparation of epoxide

An epoxide and organic peroxide technology, applied in chemical instruments and methods, chemical/physical processes, organic chemistry, etc., can solve the problems of poor mass transfer effect, high production cost, low catalyst activity, etc., and achieve manufacturing costs. The effect of reduction, high production efficiency and high catalyst activity

Active Publication Date: 2010-12-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem of low catalyst activity, poor mass transfer effect and high production cost in the prior art for producing epoxides, and a new method for preparing epoxides is provided

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  • Preparation of epoxide
  • Preparation of epoxide
  • Preparation of epoxide

Examples

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Embodiment 1

[0019] With stirring at room temperature, 10.0 g of hexadecylamine and 5.0 g of dodecylamine were added to a solution containing 80 ml of H 2 O. In a mixed solution of 60 milliliters of ethanol and 5 milliliters (1 mol / liter) of hydrochloric acid, stir until the solution is one phase. 65.0 g of ethyl orthosilicate dissolved in 30 ml of ethanol and 4.0 g of tetrabutyl titanate dissolved in 10 ml of ethanol were simultaneously added to the above mixed solution, stirred for 30 minutes and then crystallized for 24 hours. The resulting solid was then filtered and washed with water. The washed material was dried at 110°C for 12 hours, and then calcined at 600°C for 4 hours to obtain the catalyst precursor. Add 50 milliliters of cumene solutions containing 4.0 grams of hexamethyldisilazane in a 100 milliliter three-necked flask, add 10.0 grams of the catalyst precursor prepared above into the flask, and raise the temperature under rapid stirring and reflux to 150°C and reacted at t...

Embodiment 2

[0021] Except that the amount of tetrabutyl titanate is 5.0 g, other conditions are the same as [Example 1]. The finished Ti-HMS catalyst thus prepared has a specific surface area of ​​900 m 2 / g, the pore volume is 1.1 cm 3 / g, the average pore diameter is

Embodiment 3

[0023] Except that the amount of tetrabutyl titanate is 2.7 grams, other conditions are the same as [Example 1]. The finished Ti-HMS catalyst thus prepared has a specific surface area of ​​950 m 2 / g, the pore volume is 1.1 cm 3 / g, the average pore diameter is

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Abstract

The invention relates to a method to prepare epoxide, mainly aiming at solving the problems of low activity of the catalyzer, poor mass transfer effect and high production cost in the production of epoxide in prior art. The method takes organic amine as template agent to engraft titanium onto hexagonal mesoporous silicon dioxide framework to produce quadridentate active titanium specie which is then silanized to prepare epoxidizing catalyzer. The technical proposal of the invention solves above problems and is applicable to industrial production for producing epoxide.

Description

technical field [0001] The present invention relates to a process for the preparation of epoxides. Background technique [0002] Epoxides are an important class of organic chemical intermediates. The current industrial production methods of epoxides mainly include chlorohydrin method and co-oxidation method. The chlorohydrin method produces a large amount of chlorine-containing wastewater in the production process, causing serious environmental pollution and equipment corrosion; the co-oxidation method overcomes the shortcomings of the chlorohydrin method such as pollution and corrosion, but has a long process, large investment, and many co-products. The market has influenced the production of propylene oxide to some extent. [0003] It is well known that titanium-containing porous silica materials have good catalytic activity for the selective oxidation of hydrocarbons, and can be used as catalysts for the selective oxidation of olefins to prepare epoxides. [0004] Paten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D301/19C07D303/04B01J29/89
Inventor 金国杰高焕新杨洪云陈璐丁琳李学峰
Owner CHINA PETROLEUM & CHEM CORP