Journal
CATALYSIS LETTERS
Volume 152, Issue 11, Pages 3498-3505Publisher
SPRINGER
DOI: 10.1007/s10562-022-03930-7
Keywords
Dimethyl sulfide; Methanethiol; Thiolation; Ultrasonic assisted impregnation; WO3; SiO2
Categories
Funding
- Quanzhou Science and Technology Project [2019C060R]
- Natural Science Foundation of Fujian province [2021J01964]
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WO3/SiO2 catalysts synthesized by ultrasonic-impregnation method showed enhanced acidity and durability, and exhibited excellent catalytic performance for the thiolation of DMS to methanethiol.
WO3/SiO2 catalysts were synthesized by ultrasonic-impregnation method. The physical and chemical characteristics of these catalysts and their performance for dimethyl sulfide (DMS) thiolation to methanethiol were investigated. Tungsten oxide enhanced the acidity of the catalyst, and the tungsten oxide loading determined the quantity of surface acidic sites. DMS conversion was significantly enhanced with increasing WO3 content. The purpose of SiO2 was to provide mechanical strength to enhance the durability of the catalysts for long-term exposure to industrial high-pressure and sour conditions. The ultrasonic treatment had a positive effect on the structure of the catalysts and their performance. A comprehensive analysis of the conversion, selectivity, and industrial application of these catalysts showed that the 6%WO3/SiO2(100 W-1 h) catalyst, which was ultrasonicated at 100 W for 1 h, was the optimal catalyst. [GRAPHICS] .
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