Catalytic Performance of Amorphous Ti/SiO 2 in the Gas‐Phase Epoxidation of Propylene with H 2 O 2

Abstract The epoxidation of propylene with dilute H 2 O 2 aqueous solution over titanium silicalite‐1 (TS‐1) zeolite catalyst is a green chemical reaction for propylene oxide (PO) production. Carrying out the reaction in gas‐phase can get rid of problems caused by using methanol solvent. This paper...

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Published inEuropean journal of inorganic chemistry Vol. 26; no. 22
Main Authors Gao, Bize, Zhu, Quanren, Yi, Yanhui, Li, Yue, Wu, Guoxing, Guo, Yitong, Feng, Zhaochi, Guo, Hongchen
Format Journal Article
LanguageEnglish
Published 01.08.2023
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Summary:Abstract The epoxidation of propylene with dilute H 2 O 2 aqueous solution over titanium silicalite‐1 (TS‐1) zeolite catalyst is a green chemical reaction for propylene oxide (PO) production. Carrying out the reaction in gas‐phase can get rid of problems caused by using methanol solvent. This paper reports an attempt of using non‐zeolite catalyst for the gas‐phase epoxidation. Amorphous Ti/SiO 2 , obtained by grafting amorphous SiO 2 with TCl 4 in ethanol solvent in a chemical liquid‐phase deposition (CLD) process, has been used as the catalyst. Results show that the CLD Ti/SiO 2 with appropriate Si/Ti molar ratio is an active catalyst for gas‐phase epoxidation, achieving 9.8 % propylene conversion and 66.9 % PO selectivity with 40.3 % H 2 O 2 utilization, which indicates that this amorphous Ti/SiO 2 catalyst deserves extensive studies in the future.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.202200661