The role of weak Lewis acid sites for methanol thiolation

Manuel Weber-Stockbauer; Oliver Y. Gutiérrez; Ricardo Bermejo-Deval; Johannes A. Lercher

doi:10.1039/c8cy02250j

The role of weak Lewis acid sites for methanol thiolation

Manuel Weber-Stockbauer
, Oliver Y. Gutiérrez
, Ricardo Bermejo-Deval
, Johannes A. Lercher

Chair of Chemical Technology II

Technical University of Munich
Pacific Northwest National Laboratory

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Weak Lewis acid sites combined with strong base sites of Cs ⁺ supported on WS ₂ and γ-Al ₂ O ₃ 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.

Original language	English
Pages (from-to)	509-516
Number of pages	8
Journal	Catalysis Science and Technology
Volume	9
Issue number	2
DOIs	https://doi.org/10.1039/c8cy02250j
State	Published - 2019

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title = "The role of weak Lewis acid sites for methanol thiolation",

abstract = " Weak Lewis acid sites combined with strong base sites of Cs + supported on WS 2 and γ-Al 2 O 3 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.",

author = "Manuel Weber-Stockbauer and Guti{\'e}rrez, \{Oliver Y.\} and Ricardo Bermejo-Deval and Lercher, \{Johannes A.\}",

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doi = "10.1039/c8cy02250j",

language = "English",

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T1 - The role of weak Lewis acid sites for methanol thiolation

AU - Weber-Stockbauer, Manuel

AU - Gutiérrez, Oliver Y.

AU - Bermejo-Deval, Ricardo

AU - Lercher, Johannes A.

PY - 2019

Y1 - 2019

N2 - Weak Lewis acid sites combined with strong base sites of Cs + supported on WS 2 and γ-Al 2 O 3 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.

AB - Weak Lewis acid sites combined with strong base sites of Cs + supported on WS 2 and γ-Al 2 O 3 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.

UR - https://www.scopus.com/pages/publications/85060396068

U2 - 10.1039/c8cy02250j

DO - 10.1039/c8cy02250j

M3 - Article

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SN - 2044-4753

VL - 9

SP - 509

EP - 516

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 2

ER -

The role of weak Lewis acid sites for methanol thiolation

Abstract

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