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Self-templating synthesis of hollow spheres of zeolite ZSM-5 from spray-dried aluminosilicate precursor

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    0458867 - UFCH-W 2017 RIV NL eng J - Journal Article
    Pashková, Veronika - Tokarová, V. - Brabec, Libor - Dědeček, Jiří
    Self-templating synthesis of hollow spheres of zeolite ZSM-5 from spray-dried aluminosilicate precursor.
    Microporous and Mesoporous Materials. Roč. 228, JUL 2016 (2016), s. 59-63. ISSN 1387-1811
    R&D Projects: GA ČR GA15-13876S; GA MŠk LM2015073
    Institutional support: RVO:61388955
    Keywords : MFI * zeolite shells * template free synthesis
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 3.615, year: 2016

    Synthesis of hollow spheres consisting of ZSM-5 zeolite crystals, prepared by a cost- and time-saving self-templating process, requires neither a hard/soft template for sphere formation nor tetraalkylammonium compound as a zeolite structure-directing agent. A preshaped aluminosilicate precursor, obtained by spray drying of a mixture of colloidal solution of silicic acid and aluminum butoxide, plays the role of a shape-directing agent for the formation of spheres, and is used as a source of silica and alumina for zeolite growth. The zeolite structure is directed using ZSM-5 seeds. This method yielded highly stable hollow spheres with diameters of 15–25 μm, consisting of inter-grown ZSM-5 crystals (Si/Al 14) with a size of 0.5–2.0 μm.
    Permanent Link: http://hdl.handle.net/11104/0259089
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