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Space- and Time-Resolved Visualization of Acid Catalysis in ZSM-5 Crystals by Fluorescence Microscopy

Authors

  • Maarten B. J. Roeffaers,

    1. Department of Microbial and Molecular Systems, Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium, Fax: (+32) 16-321-998
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  • Bert F. Sels Prof.,

    1. Department of Microbial and Molecular Systems, Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium, Fax: (+32) 16-321-998
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  • Hiroshi Uji-i Dr.,

    1. Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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  • Bart Blanpain Prof.,

    1. Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
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  • Pieter L'hoëst,

    1. Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
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  • Pierre A. Jacobs Prof.,

    1. Department of Microbial and Molecular Systems, Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium, Fax: (+32) 16-321-998
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  • Frans C. De Schryver Prof.,

    1. Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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  • Johan Hofkens Prof.,

    1. Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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  • Dirk E. De Vos Prof.

    1. Department of Microbial and Molecular Systems, Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium, Fax: (+32) 16-321-998
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  • M.B.J.R. thanks the Institute for the Promotion of Innovation through Science and Technology in Flanders (IWT-Vlaanderen) for a fellowship. This work was performed within the framework of the IAP-V-03 programme “Supramolecular Chemistry and Catalysis” of the Belgian Federal government and of GOA-2/01. We also gratefully acknowledge support from the K.U. Leuven in the frame of the Centre of Excellence CECAT. We are grateful to G. Vanbutsele for a ZSM-5 sample.

Abstract

original image

ZSM-5 at work: Acid-catalyzed condensation of furfuryl alcohol in the pores of zeolite ZSM-5 was followed under the fluorescence microscope. During the lifetime of a catalyst, from the reaction start to deactivation, the reactivity of the different crystal segments varies. The technique allows the heterogeneity of activity within individual crystals to be visualized (see picture).

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