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Issue 12, 2016
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Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity

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Abstract

‘Hierarchy’ is a property which can be attributed to a manifold of different immaterial systems, such as ideas, items and organisations or material ones like biological systems within living organisms or artificial, man-made constructions. The property ‘hierarchy’ is mainly characterised by a certain ordering of individual elements relative to each other, often in combination with a certain degree of branching. Especially mass-flow related systems in the natural environment feature special hierarchically branched patterns. This review is a survey into the world of hierarchical systems with special focus on hierarchically porous zeolite materials. A classification of hierarchical porosity is proposed based on the flow distribution pattern within the respective pore systems. In addition, this review might serve as a toolbox providing several synthetic and post-synthetic strategies to prepare zeolitic or zeolite containing material with tailored hierarchical porosity. Very often, such strategies with their underlying principles were developed for improving the performance of the final materials in different technical applications like adsorptive or catalytic processes. In the present review, besides on the hierarchically porous all-zeolite material, special focus is laid on the preparation of zeolitic composite materials with hierarchical porosity capable to face the demands of industrial application.

Graphical abstract: Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity

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Publication details

The article was received on 31 Jul 2015 and first published on 19 Oct 2015


Article type: Review Article
DOI: 10.1039/C5CS00599J
Citation: Chem. Soc. Rev., 2016,45, 3353-3376
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    Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity

    W. Schwieger, A. G. Machoke, T. Weissenberger, A. Inayat, T. Selvam, M. Klumpp and A. Inayat, Chem. Soc. Rev., 2016, 45, 3353
    DOI: 10.1039/C5CS00599J

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