Structure–deactivation relationship for ZSM-5 catalysts governed by framework defects

Barbera, Katia; Bonino, Francesca; Bordiga, Silvia; Janssens, Ton V. W.; Beato, Pablo

doi:10.1016/j.jcat.2011.03.016

Cited by 282 publications

(229 citation statements)

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“…and 3726 cm -1 , which are assigned to external, intracrystalline and silanols in zeolite channels, 17 respectively [60,61]. The shape of this band, which differs in studied samples, is a function of 18 the contribution of each of these silanols.…”

mentioning

confidence: 93%

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Cai

Palčić

Subramanian

et al. 2016

Journal of Catalysis

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confidence: 93%

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Cai

Palčić

Subramanian

et al. 2016

Journal of Catalysis

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“…7 In recent years several new avenues were developed to prevent coke formation and/or increase the catalyst activity. These avenues include the development of hierarchical zeolites, i.e., zeolites containing both micro-and mesopores, [8][9][10][11][12][13][14][15][16] minimizing internal framework defects in the zeolite structure, 17 formation of nanosized ZSM particles, 18,19 etc. The other approach to improve catalyst stability of ZSM-5 is its modification with various metals.…”

Section: Introductionmentioning

confidence: 99%

Metal oxide–zeolite composites in transformation of methanol to hydrocarbons: do iron oxide and nickel oxide matter?

et al. 2016

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(2016) Metal oxide-zeolite composites in transformation of methanol to hydrocarbons : do iron oxide and nickel oxide matter? RSC Advances, 6 (79). pp. 75166-75177. Permanent WRAP URL:http://wrap.warwick.ac.uk/81920 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work of researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Publisher statement:First published by Royal Society of Chemistry 2016 http://dx.doi.org/10.1039/C6RA19471K A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP url' above for details on accessing the published version and note that access may require a subscription. ABSTRACT: The methanol-to-hydrocarbon (MTH) reaction received considerable attention as utilizing renewable sources of both value-added chemicals and fuels becomes number one priority for the society. Here, for the first time we report the development of hierarchical zeolites (ZSM-5) containing both iron oxide and nickel oxide nanoparticles. Modifying the iron oxide (magnetite, Fe3O4) amounts, we are able to control the catalyst activity and the product distribution in the MTH process. At the medium Fe3O4 loading, the major fraction is composed of the C9-C11 hydrocarbons (gasoline fraction). At the higher Fe3O4 loading, the C1-C4 hydrocarbons prevail in the reaction mixture, while at the lowest magnetite loading the major component is the C5-C8 hydrocarbons. Addition of Ni species to Fe3O4-ZSM-5 leads to the formation of mixed Ni oxides (NiO/Ni2O3) positioned either on top or next to Fe3O4 nanoparticles. This modification allowed us to significantly improve the catalyst stability due to diminishing coke formation and disordering of the coke formed. The incorporation of Ni oxide species also leads to a higher catalyst activity (up to 9.3 g(Methanol)/(g(ZSM-5)×h) and an improved selectivity (11.3% of the C5-C8 hydrocarbons and 23.6% of the C9-C11 hydrocarbons), making these zeolites highly promising for industrial applications.

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“…The (OH) region of the IR spectra of the fresh and aged zeolites is shown in Figure 8. Three around 3720 cm -1 [37].…”

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confidence: 96%

Influence of lattice stability on hydrothermal deactivation of Cu-ZSM-5 and Cu-IM-5 zeolites for selective catalytic reduction of NOx by NH3

Vennestrøm

Janssens

Kustov

et al. 2014

Journal of Catalysis

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125

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Structure–deactivation relationship for ZSM-5 catalysts governed by framework defects

Cited by 282 publications

References 77 publications

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Metal oxide–zeolite composites in transformation of methanol to hydrocarbons: do iron oxide and nickel oxide matter?

Influence of lattice stability on hydrothermal deactivation of Cu-ZSM-5 and Cu-IM-5 zeolites for selective catalytic reduction of NOx by NH3

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