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The role of weak Lewis acid sites for methanol thiolation

Abstract

Weak Lewis acid combined with strong base sites of Cs+ supported on WS2 and γ-Al2O3 act as active sites in the thiolation of methanol. The acid-base pairs dissociate methanol upon adsorption. The formed surface alcoholate and the corresponding sulfuryl groups enable the substitution of oxygen for sulfur in a Langmuir-Hinshelwood mechanism. Stronger Lewis acid sites catalyze dimethyl ether formation via an Eley-Rideal mechanism in which methoxy groups react with gas phase methanol. The results demonstrate the importance of adjusting the acid-base strength in oxides to selectively catalyze substitution reactions.

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Publication details

The article was received on 30 Oct 2018, accepted on 06 Dec 2018 and first published on 06 Dec 2018


Article type: Paper
DOI: 10.1039/C8CY02250J
Citation: Catal. Sci. Technol., 2019, Accepted Manuscript
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    The role of weak Lewis acid sites for methanol thiolation

    M. Weber-Stockbauer, O. Y. Gutiérrez Tinoco, R. Bermejo-Deval and J. A. Lercher, Catal. Sci. Technol., 2019, Accepted Manuscript , DOI: 10.1039/C8CY02250J

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