volume 440 pages 115828

Highly para-selective alkylation of toluene by methyl mercaptan over silylated ZSM-5 zeolite

Abdelilah Bayout 1
Claudia Cammarano 1
Izabel Medeiros Costa 2
Gleb Veryasov 3
Alexander Sachse 4
Vasile Hulea 1
Publication typeJournal Article
Publication date2024-12-01
scimago Q1
wos Q1
SJR1.558
CiteScore10.9
Impact factor6.5
ISSN00219517, 10902694
Abstract
Friedel-Crafts alkylation of toluene with methyl mercaptan has been investigated in the presence of H-ZSM-5 and SiO2/H-ZSM-5 catalysts. The silica layers have been built on H-ZSM-5 zeolite by chemical liquid deposition of tetraethyl orthosilicate. The passivation with silica of the external surface of H-ZSM-5 zeolite has been confirmed by FT-IR spectroscopy and mesitylene isomerization, used as a model reaction. All catalysts exhibited notable behavior in the alkylation of toluene to xylenes. Efficiencies higher than 98 % in alkylation for both toluene and methyl mercaptan were obtained at 375 °C. In terms of para-selectivity, outstanding performance was revealed by the silylated zeolites. Thus, over 12 % SiO2/H-ZSM-5, at 375 °C and WHSV = 9.4 gtoluene+CH3SH gcat-1h−1, the para-xylene selectivity was close to 100 %. The experimental apparent activation energy for the toluene alkylation with methyl mercaptan catalyzed by H-ZSM-5 was 80 kJ/mol.
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Bayout A. et al. Highly para-selective alkylation of toluene by methyl mercaptan over silylated ZSM-5 zeolite // Journal of Catalysis. 2024. Vol. 440. p. 115828.
GOST all authors (up to 50) Copy
Bayout A., Cammarano C., Medeiros Costa I., Veryasov G., Sachse A., Hulea V. Highly para-selective alkylation of toluene by methyl mercaptan over silylated ZSM-5 zeolite // Journal of Catalysis. 2024. Vol. 440. p. 115828.
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RIS Copy
TY - JOUR
DO - 10.1016/j.jcat.2024.115828
UR - https://linkinghub.elsevier.com/retrieve/pii/S0021951724005414
TI - Highly para-selective alkylation of toluene by methyl mercaptan over silylated ZSM-5 zeolite
T2 - Journal of Catalysis
AU - Bayout, Abdelilah
AU - Cammarano, Claudia
AU - Medeiros Costa, Izabel
AU - Veryasov, Gleb
AU - Sachse, Alexander
AU - Hulea, Vasile
PY - 2024
DA - 2024/12/01
PB - Elsevier
SP - 115828
VL - 440
SN - 0021-9517
SN - 1090-2694
ER -
BibTex
Cite this
BibTex (up to 50 authors) Copy
@article{2024_Bayout,
author = {Abdelilah Bayout and Claudia Cammarano and Izabel Medeiros Costa and Gleb Veryasov and Alexander Sachse and Vasile Hulea},
title = {Highly para-selective alkylation of toluene by methyl mercaptan over silylated ZSM-5 zeolite},
journal = {Journal of Catalysis},
year = {2024},
volume = {440},
publisher = {Elsevier},
month = {dec},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0021951724005414},
pages = {115828},
doi = {10.1016/j.jcat.2024.115828}
}