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    Facile Synthesis and Catalysis of Pure-Silica and Heteroatom LTA

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    Author
    Boal, Ben W.
    Schmidt, Joel E.
    Deimund, Mark A.
    Deem, Michael W.
    Henling, Lawrence M.
    Brand, Stephen K.
    Zones, Stacey I.
    Davis, Mark E.
    Date
    2015
    Citation
    Boal, Ben W., Schmidt, Joel E., Deimund, Mark A., et al.. "Facile Synthesis and Catalysis of Pure-Silica and Heteroatom LTA." Chemistry of Materials, 27, no. 22 (2015) 7774-7779. http://dx.doi.org/10.1021/acs.chemmater.5b03579.
    Published Version
    http://dx.doi.org/10.1021/acs.chemmater.5b03579
    Abstract
    Zeolite A (LTA) has many large-scale uses in separations and ion exchange applications. Because of the high aluminum content and lack of high-temperature stability, applications in catalysis, while highly desired, have been extremely limited. Herein, we report a robust method to prepare pure-silica, aluminosilicate (product Si/Al = 12–42), and titanosilicate LTA in fluoride media using a simple, imidazolium-based organic structure-directing agent. The aluminosilicate material is an active catalyst for the methanol-to-olefins reaction with higher product selectivities to butenes as well as C5 and C6 products than the commercialized silicoalumniophosphate or zeolite analogue that both have the chabazite framework (SAPO-34 and SSZ-13, respectively). The crystal structures of the as-made and calcined pure-silica materials were solved using single-crystal X-ray diffraction, providing information about the occluded organics and fluoride as well as structural information.
    Type
    Journal article
    Citable link to this page
    http://hdl.handle.net/1911/94243
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892