	US 11,944,959 B2
	Alkali metal ion modified titanium silicalite zeolite for gas phase epoxidation of propylene and hydrogen peroxide and preparation method thereof
Hongchen Guo, Liaoning (CN); Cuilan Miao, Liaoning (CN); Quanren Zhu, Liaoning (CN); Ning He, Liaoning (CN); Yanhui Yi, Liaoning (CN); and Jiaxu Liu, Liaoning (CN)
Assigned to DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN); and DALIAN QIYUAN TECHNOLOGY CO., LTD., Liaoning (CN)
Appl. No. 17/296,182
Filed by DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN); and DALIAN QIYUAN TECHNOLOGY CO., LTD., Liaoning (CN)
PCT Filed Apr. 14, 2020, PCT No. PCT/CN2020/084654 § 371(c)(1), (2) Date May 21, 2021, PCT Pub. No. WO2020/248694, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 201910515504.X (CN), filed on Jun. 14, 2019.
Prior Publication US 2022/0008903 A1, Jan. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 29/89 (2006.01); B01J 37/00 (2006.01); B01J 37/04 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); B01J 37/10 (2006.01)

CPC B01J 29/89 (2013.01) [B01J 37/009 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/082 (2013.01); B01J 37/10 (2013.01); B01J 2229/18 (2013.01)]

2 Claims

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⁻¹and 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%.