OLEFIN EPOXIDATION CATALYST, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF

Title:

OLEFIN EPOXIDATION CATALYST, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2019/105031

Kind Code:

A1

Abstract:

The present invention relates to a preparation method for an olefin epoxidation catalyst. The method comprises: (1) preparing a titanium silicon gel; (2) performing pore-enlarging treatment on the titanium silica gel by using an organic amine or liquid ammonia, drying and calcining to obtain a titanium-silicon composite oxide; (3) optionally carrying out an alcoholic solution treatment of an organic alkali metal salt; and (4) optionally performing a gas phase silane treatment. According to the method of the present invention, pore diameter of the catalyst prepared has modifiable character to have a higher activity for epoxidation of olefin molecules of different kinetic diameters; and the two-step modification of the catalyst effectively reduces the surface acidity of the catalyst, giving the catalyst a higher selectivity to epoxidation products.

Inventors:

WANG TONGJI (CN)
YE FEI (CN)
WANG LEI (CN)
CHU NAIBO (CN)
YANG LICHAO (CN)
SUN KANG (CN)
LI YUAN (CN)
HUA WEIQI (CN)

Application Number:

PCT/CN2018/093611

Publication Date:

June 06, 2019

Filing Date:

June 29, 2018

Export Citation:

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Assignee:

WANHUA CHEMICAL GROUP CO LTD (CN)

International Classes:

B01J21/08; B01J23/04; C07D301/19; C07D303/04

Foreign References:

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Other References: