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Method for preparing 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, low catalyst activity, high production cost, and reduce manufacturing costs. , The effect of high catalyst activity and high production efficiency

Active Publication Date: 2009-01-21
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

Method used

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  • Method for preparing epoxide
  • Method for preparing epoxide
  • Method for preparing epoxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] With stirring at room temperature, 10 g of hexadecylamine and 5 g of dodecylamine were added to 80 ml of H 2 O. In a mixed solution of 60 milliliters of ethanol and 5 milliliters (1M) of hydrochloric acid, stir until the solution is one phase. 65.0 g of ethyl orthosilicate dissolved in 30 ml of ethanol was added to the above mixed solution, stirred for 30 minutes and then crystallized for 24 hours. The resulting solid was filtered and washed with water to remove residual Cl - . The washed solid was dried at 110° C. for 12 hours, and then calcined at 600° C. for 4 hours to obtain HMS with a hexagonal mesoporous structure.

[0022] Press the powder sample prepared above into tablets (forming pressure is 20MPa), crush and sieve, take 10.0 grams of 20-40 mesh particles and put them into a quartz tube reactor, and dry them at 120°C for 2 hours under a nitrogen atmosphere. Raise the temperature to 300°C and dissolve 1.2 g of TiCl with nitrogen 4Saturated steam is brought ...

Embodiment 2

[0024] except TiCl 4 The amount is except 1.5 grams, and all the other conditions are identical with [embodiment 1]. The prepared Ti-HMS catalyst has a specific surface area of ​​800 m 2 / g, the pore volume is 0.85 cm 3 / g, the average pore diameter is

Embodiment 3

[0026] except TiCl 4 The amount is except 0.9 gram, and all the other conditions are identical with [Example 1]. The prepared Ti-HMS catalyst has a specific surface area of ​​850 m 2 / g, the pore volume is 0.9 cm 3 / g, the average pore diameter is

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Abstract

The invention relates to a method for preparing an epoxide and mainly resolves the problems in the prior art such as the low activity of catalysts for production of the epoxide, poor effect of mass transference, and high cost of production. The invention well resolves the problems through adopting the technical proposal which selects cheap organic amine as a template with shorter crystallization time, carries titanium through posterior synthesis in the presence of inertia gas, grafts inorganic titanium to silicon dioxide framework with a hexagonal mesoporous structure to form a substance of active titanium with four coordinating structure, and carries out alkylation treatment to produce a catalyst of the epoxide. The method provided by the invention can be applied to the industrialized production of the 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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IPC IPC(8): C07D301/12B01J29/89
Inventor 金国杰高焕新陈璐杨洪云丁琳李学锋
Owner CHINA PETROLEUM & CHEM CORP
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