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    Structure–performance descriptors and the role of Lewis acidity in the methanol-to-propylene process

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    Type
    Article
    Authors
    Yarulina, Irina
    De Wispelaere, Kristof
    Bailleul, Simon
    Goetze, Joris
    Radersma, Mike
    Abou-Hamad, Edy cc
    Vollmer, Ina
    Goesten, Maarten
    Mezari, Brahim
    Hensen, Emiel J. M.
    Martínez-Espín, Juan S.
    Morten, Magnus
    Mitchell, Sharon
    Perez-Ramirez, Javier
    Olsbye, Unni
    Weckhuysen, Bert M.
    Van Speybroeck, Veronique
    Kapteijn, Freek cc
    Gascon, Jorge cc
    KAUST Department
    Chemical Engineering Program
    Imaging and Characterization Core Lab
    KAUST Catalysis Center (KCC)
    NMR
    Physical Science and Engineering (PSE) Division
    Date
    2018-06-25
    Online Publication Date
    2018-06-25
    Print Publication Date
    2018-08
    Permanent link to this record
    http://hdl.handle.net/10754/628296
    
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    Abstract
    The combination of well-defined acid sites, shape-selective properties and outstanding stability places zeolites among the most practically relevant heterogeneous catalysts. The development of structure–performance descriptors for processes that they catalyse has been a matter of intense debate, both in industry and academia, and the direct conversion of methanol to olefins is a prototypical system in which various catalytic functions contribute to the overall performance. Propylene selectivity and resistance to coking are the two most important parameters in developing new methanol-to-olefin catalysts. Here, we present a systematic investigation on the effect of acidity on the performance of the zeolite ‘ZSM-5’ for the production of propylene. Our results demonstrate that the isolation of Brønsted acid sites is key to the selective formation of propylene. Also, the introduction of Lewis acid sites prevents the formation of coke, hence drastically increasing catalyst lifetime.
    Citation
    Yarulina I, De Wispelaere K, Bailleul S, Goetze J, Radersma M, et al. (2018) Structure–performance descriptors and the role of Lewis acidity in the methanol-to-propylene process. Nature Chemistry 10: 804–812. Available: http://dx.doi.org/10.1038/s41557-018-0081-0.
    Sponsors
    This research received funding from the Netherlands Organization for Scientific Research (NWO) in the framework of the TASC Technology Area ‘Syngas, a Switch to Flexible New Feedstock for the Chemical Industry (TA-Syngas). S.B., K.D.W. and V.V.S. acknowledge the Fund for Scientific Research: Flanders (FWO), the Belgian American Educational Foundation, the Research Board of Ghent University (BOF), BELSPO in the frame of IAP/7/05 and funding from the European Union’s Horizon 2020 research and innovation programme (consolidator ERC grant agreement no. 647755—DYNPOR (2015–2020)). The computational resources and services used were provided by Ghent University (Stevin Supercomputer Infrastructure) and the VSC (Flemish Supercomputer Center), funded by the Research Foundation: Flanders (FWO).
    Publisher
    Springer Nature
    Journal
    Nature Chemistry
    DOI
    10.1038/s41557-018-0081-0
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41557-018-0081-0
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; KAUST Catalysis Center (KCC)

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