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Catalysts 2017, 7(8), 225; doi:10.3390/catal7080225

Mesoporous ZSM-5 Zeolites in Acid Catalysis: Top-Down vs. Bottom-Up Approach

1
Laboratoire de Synthèse Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 CNRS, Université de Strasbourg, 1 rue Blaise Pascal, 67000 Strasbourg CEDEX, France
2
Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, D 45470 Mülheim an der Ruhr, Germany
3
Department of Chemical & Biological Engineering, Iowa State University, 2138 Biorenewables Research Laboratory, 617 Bissell Road, Ames, IA 50011-1098, USA
*
Authors to whom correspondence should be addressed.
Received: 26 May 2017 / Revised: 14 July 2017 / Accepted: 19 July 2017 / Published: 26 July 2017
(This article belongs to the Special Issue Zeolites and Catalysis)
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Abstract

A top-down desilication of Al-rich ZSM-5 zeolites and a bottom-up mesopores creating method were evaluated in this study. Three liquid–solid and one gas–solid heterogeneously-catalysed reactions were chosen to establish relationships between zeolites textural properties and their catalytic behavior in acid-catalysed model reactions that are influenced by shape selectivity: Diels-Alder cyclization between isoprene and methylacrylate, Methanol-to-Olefins (MTO) reaction, chlorination of iodobenzene with trichloroisocyanuric acid (TCCA), and Friedel-Crafts acylation of anisole by carboxylic acids with differing sizes. It is found amongst others that no optimal mesoporosity for all the different reactions can be easily obtained, but depending on the chosen application, a specific treatment has to be set to achieve high activity/selectivity and stability. View Full-Text
Keywords: zeolite; desilication; acid catalysis; mesoporosity zeolite; desilication; acid catalysis; mesoporosity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Losch, P.; Hoff, T.C.; Kolb, J.F.; Bernardon, C.; Tessonnier, J.-P.; Louis, B. Mesoporous ZSM-5 Zeolites in Acid Catalysis: Top-Down vs. Bottom-Up Approach. Catalysts 2017, 7, 225.

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