TY - JOUR
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.
N1 - Publisher Copyright:
© 2019 The Royal Society of Chemistry.
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 - http://www.scopus.com/inward/record.url?scp=85060396068&partnerID=8YFLogxK
U2 - 10.1039/c8cy02250j
DO - 10.1039/c8cy02250j
M3 - Article
AN - SCOPUS:85060396068
SN - 2044-4753
VL - 9
SP - 509
EP - 516
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
IS - 2
ER -