Methanol thiolation over Al₂O₃ and WS₂ catalysts modified with cesium

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• 作者：Anastasia V. Pashigreva ; Elena Kondratieva ; Ricardo Bermejo-Deval ; Oliver Y. Gutié ; rrez ; ^{oliver.gutierrez@mytum.de} ; Johannes A. Lercher ; ^{johannes.lercher@ch.tum.de}
• 关键词：Methanethiol ; Thiolation ; Sulfide catalysts ; Alkali promotion ; WS2 ; Dimethyl ether
• 刊名：Journal of Catalysis
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：345
• 期：Complete
• 页码：308-318
• 全文大小：1686 K
• 卷排序：345

文摘

Reactions of methanol and H2S over Al2O3 and WS2/Al2O3 with or without Cs+. Dimethyl ether and methanethiol form on strong acid sites of the Cs+-free catalysts. Reactions follow bimolecular Langmuir-Hinshelwood (SN2) mechanisms. Strong acid sites of the parent materials are replaced by Cs+ with weak acidity. Cs+ sites only catalyze methanol thiolation to methanethiol suppressing side reactions.