Preparation method of amorphous Ti/SiO2 catalyst for gas-phase epoxidation reaction of propylene and hydrogen peroxide

The invention belongs to the technical field of catalysis for producing epoxypropane by epoxidation of propylene and hydrogen peroxide, and relates to a preparation method of an amorphous Ti/SiO2 catalyst for gas-phase epoxidation reaction of propylene and hydrogen peroxide. According to the method,...

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Bibliographic Details
Main Authors GAO BIZE, GUO HONGCHEN
Format Patent
LanguageChinese
English
Published 15.08.2023
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The invention belongs to the technical field of catalysis for producing epoxypropane by epoxidation of propylene and hydrogen peroxide, and relates to a preparation method of an amorphous Ti/SiO2 catalyst for gas-phase epoxidation reaction of propylene and hydrogen peroxide. According to the method, low-carbon alcohol is used as a solvent, titanium tetrachloride is grafted on an amorphous silicon dioxide powder carrier in a liquid-solid phase reaction mode, and the amorphous Ti/SiO2 catalyst with high activity and selectivity is prepared. The amorphous Ti/SiO2 catalyst has a titanium active center structure which is completely different from that of a titanium silicalite molecular sieve TS-1. The method disclosed by the invention has important significance for promoting an industrial process of a technology for preparing epoxypropane by gas-phase epoxidation of propylene and hydrogen peroxide, which is carried out at normal pressure and a temperature higher than 100 DEG C and does not participate in a solvent
Bibliography:Application Number: CN202310582416