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An Overview on Zeolite Shaping Technology and Solutions to Overcome Diffusion Limitations

1
ICPEES—Institute de Chimie et Procédés pour l’Energie, l’Environment et la Santé, Energy and Fuels for a Sustainable Environment Team, UMR 7515 CNRS—Université de Strasbourg—ECPM, 25 rue Becquerel, F-67087 Strasbourg CEDEX 2, France
2
Saint-Gobain C.R.E.E, 550 Avenue Alphonse Jauffret, BP 224, 84306 Cavaillon CEDEX, France
*
Author to whom correspondence should be addressed.
Catalysts 2018, 8(4), 163; https://doi.org/10.3390/catal8040163
Received: 19 March 2018 / Revised: 7 April 2018 / Accepted: 16 April 2018 / Published: 18 April 2018
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Abstract

Synthetic zeolites are widely used as catalysts/carriers for many petrochemical reactions and in refining processes. These materials are usually synthesized in a powder form and must be shaped prior to use in industrial reactors. This review presents the state-of-the-art of the zeolite shaping technology describing the main modifications induced by the interactions between the zeolite and the binder. Additionally, a strategy is presented to overcome the diffusion limitations associated to the microporous structure of zeolites, consisting in the introduction of hierarchical porosity in the binder. Several developments in the field of hierarchical aluminas are summarized in this article, highlighting the possibility to design different ordered/disordered mesoporous and macroporous structures. View Full-Text
Keywords: zeolites; shaping; hierarchical porosity; alumina; binder zeolites; shaping; hierarchical porosity; alumina; binder
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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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Bingre, R.; Louis, B.; Nguyen, P. An Overview on Zeolite Shaping Technology and Solutions to Overcome Diffusion Limitations. Catalysts 2018, 8, 163.

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