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Authors
Suganuma, Satoshi Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University Tottori University Researchers KAKEN Search Researchers
Nakamura, Koshiro Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University
Okuda, Akihito Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University
Katada, Naonobu Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University Tottori University Researchers KAKEN Search Researchers
Keywords
ZSM-5
Ni loading
toluene disproportionation
acidic property
synergy effect
Abstract
Impregnation of various heteroelements on the ZSM-5 zeolite was applied to improvement of the catalytic activity in toluene disproportionation. Nickel loaded on ZSM-5 (Ni/ZSM-5) exhibited higher catalytic activity (toluene conversion) and lower benzene / xylene ratio (closer to the stoichiometry, meaning low rate of side reaction) than H-ZSM-5 zeolite. The Ni/ZSM-5 with Ni/Al = 0.6 showed the maximum in catalytic activity, and excess Ni loading caused decrease in the conversion and increase in the benzene / xylene ratio due to decrease of acid amount and acceleration of dealkylation, respectively. The detailed analysis of acidic property by means of ammonia IRMS-TPD method showed that the Ni loading generated Lewis acid sites on the zeolite. The synergy of Brønsted and Lewis acid sites, ascribed to Si-OH-Al and Ni species, respectively, is suggested to give the high activity of desired reaction.
Publisher
Elsevier
Content Type
Journal Article
Link
ISSN・ISBN
24688231
Journal Title
Molecular catalysis
Current Journal Title
Molecular catalysis
Volume
435
Start Page
110
End Page
117
Published Date
2017
Publisher-DOI
Text Version
Author
Rights
Copyright © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
This work was published by Elsevier: Suganuma, S., Nakamura, K., Okuda, A., Katada, N., Enhancement of Catalytic Activity for Toluene Disproportionation by Loading Lewis Acidic Nickel Species on ZSM-5 Zeolite, Molecular catalysis. 2017, 435, 110-117. doi: 10.1016/j.mcat.2017.03.029
Department
Faculty of Engineering/Graduate School of Engineering
Language
English