Patent ID: 11944959
Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B

Claim 0:
1. An alkali metal ion modified titanium silicalite zeolite as a catalyst for gas phase epoxidation of propylene and hydrogen peroxide, wherein in the alkali metal ion modified titanium silicalite zeolite is a modified TS-1 zeolite, the alkali metal ion is located in a vicinity of hydroxyl groups on the modified TS-1 zeolite; an infrared characteristic absorption band of a framework titanium active site modified by the alkali metal ion is in a range above 960 cm−1 and below 980 cm−1; a TS-1 zeolite matrix of the alkali metal ion modified titanium silicalite zeolite meets the following requirements: a crystal size is ≥0.3 micron; a silicon-titanium molar ratio is ≤200; an index value of a framework titanium content is ≥0.40; and a relative crystallinity is ≥85%.