Cs-supported silica-based catalyst and preparation method and application thereof

A catalyst, supported technology, applied in molecular sieve catalysts, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of high equipment requirements, easy corrosion, high price of propylene, etc., achieve simple preparation process, maintain catalytic activity, The effect of high catalytic activity
CN103801280AInactive Publication Date: 2014-05-21SHANGHAI HUAYI GRP CO
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI HUAYI GRP CO
Publication Date
2014-05-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a Cs-supported silica-based catalyst. One of SBA-15, SiO2 or silicon dioxide prepared by a silica sol method is used as a carrier, the support is selected from one of Cs salt and a mixture of Cs and modified elements, the catalyst is prepared by a dipping method, the Cs content is 0.1wt%-10wt%, and the content of the modified elements is 0-2wt%. Meanwhile, the invention further provides a preparation method of the Cs-supported silica-based catalyst and application of the Cs-supported silica-based catalyst to the process of preparing methyl acrylate by catalyzing condensation reaction of methyl acetate and a methanal gas phase. The prepared catalyst is capable of realizing the aldol condensation of the methyl acetate and the methanal gas phase under proper conditions so as to prepare the methyl acrylate, wherein the activity of the Cs / SBA-15 catalyst is higher than that of other Cs-supported silica-based catalysts, and the selectivity on the methyl acrylate is good.
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Description

technical field

[0001] The invention relates to a Cs-loaded silicon-based catalyst and a preparation method thereof, as well as the application of catalyzing the gas-phase condensation reaction of methyl acetate and formaldehyde to prepare methyl acrylate. Background technique

[0002] Methyl acrylate, molecular formula C 4 h 6 o 2 , a colorless liquid with a pungent smell, slightly soluble in water, soluble in ethanol and ether, is an important intermediate in organic synthesis and an organic monomer in polymer synthesis, widely used in the copolymerization of rubber, prepared with A new type of rubber with high temperature resistance and oil resistance; it can be copolymerized with methyl methacrylate and olefins to obtain high-performance coatings; it can be polymerized with acrylonitrile to improve the spinnability, dyeability and plasticization of polyacrylonitrile fibers; In addition, methyl acrylate also has applications in chemical fibers, leather, resins, coating...

Claims

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