Shaped Hierarchical H-ZSM-5 Catalysts for the Conversion of Dimethyl Ether to Gasoline

Simon Wodarz; Nikolaj A. Slaby; Michael C. Zimmermann; Thomas N. Otto; Julian Holzinger; Jørgen Skibsted; Thomas A. Zevaco; Stephan Pitter; Jörg Sauer

doi:10.1021/acs.iecr.9b06256

Shaped Hierarchical H-ZSM-5 Catalysts for the Conversion of Dimethyl Ether to Gasoline

Simon Wodarz, Nikolaj A. Slaby, Michael C. Zimmermann, Thomas N. Otto^*, Julian Holzinger, Jørgen Skibsted, Thomas A. Zevaco, Stephan Pitter, Jörg Sauer

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

11 Citations (Scopus)

Abstract

Hierarchical H-ZSM-5 zeolites are a promising class of heterogeneous catalysts that have shown encouraging results in lab-scale studies for the production of gasoline from dimethyl ether (DTG conversion). However, the influences of mesopore formation and shaping on various catalyst properties are still under debate. In this study, a series of H-ZSM-5 zeolites with hierarchical pore structures were prepared by modifying commercially available zeolites via alkaline treatment ("desilication"). The powdered zeolites were shaped into technical catalyst bodies by wet extrusion using either silica or alumina binders. All materials were extensively characterized. The different interactions during alkaline treatment were related to the observed modifications in the zeolite properties of the materials obtained. Although many properties of modified and untreated zeolite powders remained predominantly unchanged in their shaped catalyst equivalents, both binders affected certain material characteristics, particularly those related to their acidity. Finally, preliminary tests showed enhanced catalytic performance of hierarchical ZSM-5 catalysts in DTG conversion.

Original language	English
Journal	Industrial and Engineering Chemistry Research
Volume	59
Issue	40
Pages (from-to)	17689-17707
Number of pages	19
ISSN	0888-5885
DOIs	https://doi.org/10.1021/acs.iecr.9b06256
Publication status	Published - Oct 2020

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title = "Shaped Hierarchical H-ZSM-5 Catalysts for the Conversion of Dimethyl Ether to Gasoline",

abstract = "Hierarchical H-ZSM-5 zeolites are a promising class of heterogeneous catalysts that have shown encouraging results in lab-scale studies for the production of gasoline from dimethyl ether (DTG conversion). However, the influences of mesopore formation and shaping on various catalyst properties are still under debate. In this study, a series of H-ZSM-5 zeolites with hierarchical pore structures were prepared by modifying commercially available zeolites via alkaline treatment ({"}desilication{"}). The powdered zeolites were shaped into technical catalyst bodies by wet extrusion using either silica or alumina binders. All materials were extensively characterized. The different interactions during alkaline treatment were related to the observed modifications in the zeolite properties of the materials obtained. Although many properties of modified and untreated zeolite powders remained predominantly unchanged in their shaped catalyst equivalents, both binders affected certain material characteristics, particularly those related to their acidity. Finally, preliminary tests showed enhanced catalytic performance of hierarchical ZSM-5 catalysts in DTG conversion. ",

author = "Simon Wodarz and Slaby, {Nikolaj A.} and Zimmermann, {Michael C.} and Otto, {Thomas N.} and Julian Holzinger and J{\o}rgen Skibsted and Zevaco, {Thomas A.} and Stephan Pitter and J{\"o}rg Sauer",

year = "2020",

month = oct,

doi = "10.1021/acs.iecr.9b06256",

language = "English",

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pages = "17689--17707",

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issn = "0888-5885",

publisher = "American Chemical Society",

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Shaped Hierarchical H-ZSM-5 Catalysts for the Conversion of Dimethyl Ether to Gasoline. / Wodarz, Simon; Slaby, Nikolaj A.; Zimmermann, Michael C. et al.
In: Industrial and Engineering Chemistry Research, Vol. 59, No. 40, 10.2020, p. 17689-17707.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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AU - Wodarz, Simon

AU - Slaby, Nikolaj A.

AU - Zimmermann, Michael C.

AU - Otto, Thomas N.

AU - Holzinger, Julian

AU - Skibsted, Jørgen

AU - Zevaco, Thomas A.

AU - Pitter, Stephan

AU - Sauer, Jörg

PY - 2020/10

Y1 - 2020/10

N2 - Hierarchical H-ZSM-5 zeolites are a promising class of heterogeneous catalysts that have shown encouraging results in lab-scale studies for the production of gasoline from dimethyl ether (DTG conversion). However, the influences of mesopore formation and shaping on various catalyst properties are still under debate. In this study, a series of H-ZSM-5 zeolites with hierarchical pore structures were prepared by modifying commercially available zeolites via alkaline treatment ("desilication"). The powdered zeolites were shaped into technical catalyst bodies by wet extrusion using either silica or alumina binders. All materials were extensively characterized. The different interactions during alkaline treatment were related to the observed modifications in the zeolite properties of the materials obtained. Although many properties of modified and untreated zeolite powders remained predominantly unchanged in their shaped catalyst equivalents, both binders affected certain material characteristics, particularly those related to their acidity. Finally, preliminary tests showed enhanced catalytic performance of hierarchical ZSM-5 catalysts in DTG conversion.

AB - Hierarchical H-ZSM-5 zeolites are a promising class of heterogeneous catalysts that have shown encouraging results in lab-scale studies for the production of gasoline from dimethyl ether (DTG conversion). However, the influences of mesopore formation and shaping on various catalyst properties are still under debate. In this study, a series of H-ZSM-5 zeolites with hierarchical pore structures were prepared by modifying commercially available zeolites via alkaline treatment ("desilication"). The powdered zeolites were shaped into technical catalyst bodies by wet extrusion using either silica or alumina binders. All materials were extensively characterized. The different interactions during alkaline treatment were related to the observed modifications in the zeolite properties of the materials obtained. Although many properties of modified and untreated zeolite powders remained predominantly unchanged in their shaped catalyst equivalents, both binders affected certain material characteristics, particularly those related to their acidity. Finally, preliminary tests showed enhanced catalytic performance of hierarchical ZSM-5 catalysts in DTG conversion.

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JO - Industrial and Engineering Chemistry Research

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Shaped Hierarchical H-ZSM-5 Catalysts for the Conversion of Dimethyl Ether to Gasoline

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