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Issue 2, 2019
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The role of weak Lewis acid sites for methanol thiolation

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Abstract

Weak Lewis acid sites 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 the 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.

Graphical abstract: The role of weak Lewis acid sites for methanol thiolation

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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., 2019,9, 509-516

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    The role of weak Lewis acid sites for methanol thiolation

    M. Weber-Stockbauer, O. Y. Gutiérrez, R. Bermejo-Deval and J. A. Lercher, Catal. Sci. Technol., 2019, 9, 509
    DOI: 10.1039/C8CY02250J

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