Preparation method and application of eggshell type composite metal catalyst

A composite metal and catalyst technology, applied in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, carbon-based compounds, etc., can solve the complex catalyst preparation process and loading process, reduce catalyst activity and product Yield, methacrolein selectivity reduction and other problems, to achieve excellent catalytic performance and life, improve catalyst performance, low cost effect
CN110420643AInactive Publication Date: 2019-11-08INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2019-11-08
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to an eggshell type composite metal oxide catalyst applied to gas phase oxidation of isobutylene / tert-butanol for synthesis of methylacrolein. A spherical carrier and a binder are added during the preparation of the catalyst, so a metal salt undergoes a reaction on the surface of the spherical carrier and adheres onto the surface of the spherical carrier; and a part of the binder is removed by roasting so as to obtain the eggshell type composite metal oxide catalyst. The catalyst provided by the invention is simple in preparation process and low in cost, and has excellentcatalytic performance in the gas phase oxidation of isobutylene / tert-butanol for synthesis of methylacrolein; and the catalyst has long catalytic life and is suitable for industrialization.
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Description

technical field

[0001] The invention relates to a preparation method of an eggshell-type composite metal oxide catalyst and its use in the reaction of synthesizing methacrolein by gas-phase oxidation of isobutene / tert-butanol, belonging to the field of catalyst preparation and application. Background technique

[0002] As an important organic chemical raw material and industrial intermediate, methyl methacrylate (MMA) is mainly used in the production of plexiglass (PMMA), light guide plates, light guide fibers, etc. Due to the excellent physical and chemical properties of PMMA, it is widely used in LED, aviation and Important national industries such as rail transit have important applications. The acetone cyanohydrin method is the traditional production process of MMA. Due to the use of highly toxic hydrocyanic acid and corrosive sulfuric acid in the production process, it seriously pollutes the environment, so a new alternative process that meets the requirements of green ...

Claims

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