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 transfe

Method used

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

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0020] [Example 1]

[0021] Add 10 g of hexadecylamine, 5 g of dodecylamine to 80 ml of H at room temperature with stirring 2 O, 60 mL of ethanol and 5 mL of (1M) hydrochloric acid, and stirred until the solution was 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 hexagonal mesoporous structure.

[0022] After crushing and sieving the powdery sample prepared above (forming pressure is 20MPa), take 10.0 grams of 20-40 mesh particles and put them in a quartz tubular reactor, and dry them at 120°C for 2 hours under a nitrogen atmosphere. Raise the temperature to 300 °C and replace 1.2 g of TiCl with nitrogen 4Saturated steam was brought in, followed by raising the tempe...

Example Embodiment

[0023] [Example 2]

[0024] Except for TiCl 4 The remaining conditions are the same as [Example 1] except that the amount of 1.5 grams. The specific surface area of ​​the prepared Ti-HMS catalyst is 800 m 2 / g, the hole volume is 0.85 cm 3 / g, the average pore size is

Example Embodiment

[0025] [Example 3]

[0026] Except for TiCl 4 The remaining conditions are the same as [Example 1] except that the amount of 0.9 g. The specific surface area of ​​the prepared Ti-HMS catalyst is 850 m 2 / g, pore volume is 0.9 cm 3 / g, the average pore size 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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