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Preparation method of allyl acetate

A technology of allyl acetate and acetic acid, applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of low catalytic activity, low selectivity of allyl acetate, etc., and achieve large stacking voids rate, external surface area of ​​large particles, and the effect of pressure drop in small beds

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by this invention is that the method for synthesizing allyl acetate in the prior art has low catalytic activity, and the problem that the selectivity of allyl acetate is low provides a kind of synthesis acetic acid by propylene, acetic acid and oxygen-containing gas gas phase reaction Allyl ester method, which is characterized by high catalytic activity and high selectivity to allyl acetate

Method used

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  • Preparation method of allyl acetate
  • Preparation method of allyl acetate
  • Preparation method of allyl acetate

Examples

Experimental program
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Effect test

Embodiment 1】 to 【 Embodiment 12

[0022] Except for the shape and size of the carrier used, the preparation process and evaluation method of the catalyst are the same as [Comparative Example 1].

Embodiment 13

[0024] The carrier of Example 1 was used to replace the cylindrical carrier in Example 7. The other preparation steps of the catalyst and the evaluation method of the catalyst were the same as in Example 7, except that the reducing agent was sodium formate solution.

Embodiment 14

[0026] The carrier of Example 2 was used to replace the cylindrical carrier in Example 7. The other preparation steps of the catalyst and the evaluation method of the catalyst were the same as in Example 7, except that the reducing agent used was gas containing hydrogen.

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Abstract

The invention relates to a preparation method of allyl acetate, and the method is mainly used for solving the technical problems that the allyl acetate catalyst has the defects of low space-time yield and poor reaction selectivity in an allyl acetate synthesis method in the prior art. The technical scheme adopted by the invention is as follows: according to the method, a catalyst of allyl acetate is synthetized through gas-phase reaction of propylene, acetic acid and oxygen-containing gas, the carrier of the catalyst is SiO2 or a mixture of SiO2 and Al2O3, the carrier is cylindrical and the length of the cylinder is 3-8mm, the ratio of the length to the diameter is 0.78-1.0, the inner cross section of the cylinder is latticed, and the shape of grid holes is triangle or square, so that the problems in the prior art are better solved, and the method can be used in the industrial production of allyl acetate.

Description

technical field [0001] The present invention relates to a kind of method for preparing allyl acetate. Background technique [0002] In the reaction of preparing allyl acetate by gas phase reaction with propylene, acetic acid and oxygen or oxygen-containing gas as raw materials, the suitable catalyst is that the active component contains Pd and KOAc, and may contain Cu, Au, Sn, or its corresponding Salt compounds. These active components are usually supported on SiO 2 , or SiO 2 with Al 2 o 3 on the mixture. The active components of this type of catalyst have already matured. The catalyzer that is used to prepare allyl acetate in the prior art is spherical or columnar, and for example U.S. Patent No. 3925452 discloses the catalyzer that is synthesized allyl acetate by propylene, acetic acid and oxygen-containing gas gas-phase reaction, and this catalyst is spherical or columnar silica As a carrier, palladium is supported, and alkali (earth) metal is used as a cocatalys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/155C07C67/055B01J31/04B01J35/10
Inventor 杨运信张丽斌刘军晓
Owner CHINA PETROLEUM & CHEM CORP
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