Allyl acetate catalyst and preparation method thereof
A technology of allyl acetate and catalyst, applied in the field of allyl acetate catalyst and preparation thereof, can solve the problems of low space-time yield of catalyst, poor reaction selectivity, low stacking porosity, etc., and achieves improved space-time yield, high Selectivity, effect of large bulk void fraction
Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0003] One of the technical problems to be solved by this invention is that there are problems in the prior art that the space-time yield of the catalyst is low and the reaction selectivity is poor, and a new method for the synthesis of allyl acetate by the gas phase reaction of propylene, acetic acid and oxygen-containing gas is provided. The catalyst has the characteristics of low bulk void ratio, large bed pressure drop, high space-time yield and high selectivity
Method used
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Embodiment 1】 to 【 Embodiment 12
[0025] 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
[0027] 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
[0029] 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 was a gas containing hydrogen.
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The invention relates to a catalyst for synthesizing allyl acetate and a preparation method thereof. The catalyst and the preparation mainly solve the problems that the residence time yield is low and the reaction selectivity is bad in the prior art. The problems are solved by adopting the catalyst for synthesizing the allyl acetate and the preparation method thereof provided by the invention, wherein a catalyst carrier consists of SiO2 or a mixture of the SiO2 and Al2O3 and is in a columnar type, a cylinder is 3-8mm long, and the ratio of the length to the diameter is 0.78-1.0; and a cross section in the cylinder is in a latticed type and gridding holes are in a triangular or square type. Therefore, the catalyst for synthesizing the allyl acetate and the preparation method thereof can be applicable to the industrial production of an allyl acetate catalyst.
Description
technical field [0001] The invention relates to an allyl acetate catalyst and a preparation method thereof. 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 coc...
Claims
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IPC IPC(8): B01J31/26B01J35/10C07C69/155C07C67/055
Inventor 杨运信刘军晓张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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