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Issue 20, 2015
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Tailoring and visualizing the pore architecture of hierarchical zeolites

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Abstract

Recently the concept of hierarchical zeolites invoked more explicit attention to enhanced accessibility of zeolites. By realizing additional meso-/macroporosity with the intrinsic microporosity of zeolites, a hierarchical pore system arises which facilitates mass transport while maintaining the zeolite shape selectivity. A great number of synthesis strategies have been developed for tailoring the pore architecture of hierarchical zeolites. In this review, we give a general overview of different synthesis methods for introduction of additional porosity. Advantages and limitations of these different synthesis approaches are addressed. The assessment of pore structure is essential to build the link between the zeolite pore structure and its functionality. A variety of 2D and 3D microscopy techniques are crucial to visualize the hierarchical pore structure, providing unique and comprehensive information that, however, should be linked to the results of bulk characterization techniques as much as possible. The microscopy techniques are classified and discussed according to the different probes used, such as optical light, X-rays and electrons. Representative work is reviewed to elucidate the capability of each technique and their drawbacks.

Graphical abstract: Tailoring and visualizing the pore architecture of hierarchical zeolites

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Publication details

The article was received on 18 Feb 2015 and first published on 26 May 2015


Article type: Review Article
DOI: 10.1039/C5CS00155B
Citation: Chem. Soc. Rev., 2015,44, 7234-7261
  • Open access: Creative Commons BY license
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    Tailoring and visualizing the pore architecture of hierarchical zeolites

    Y. Wei, T. E. Parmentier, K. P. de Jong and J. Zečević, Chem. Soc. Rev., 2015, 44, 7234
    DOI: 10.1039/C5CS00155B

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