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Controlling the Assembly of Silica Mesoporous Materials by Varying the Decrease in pH

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    0181300 - UFCH-W 20010223 RIV NL eng C - Conference Paper (international conference)
    Rathouský, Jiří - Čejka, Jiří - Kooyman, P. J. - Slabová, Markéta - Zukal, Arnošt
    Controlling the Assembly of Silica Mesoporous Materials by Varying the Decrease in pH.
    Zeolites and Mesoporous Materials at the Dawn of the 21st Century. Amsterdam: Elsevier, 2001 - (Galarneau, A.; DiRenzo, F.; Fajula, F.; Vedrine, J.), s. 1-8. Studies in Surface Science and Catalysis., 135.
    [International Zeolite Conference /13./. Montpellier (FR), 08.07.2001-13.07.2001]
    R&D Projects: GA ČR GA203/98/1168; GA AV ČR IAA4040001
    Institutional research plan: CEZ:AV0Z4040901
    Keywords : mesoporous silica * MCM-41 * homogeneous precipitation
    Subject RIV: CF - Physical ; Theoretical Chemistry

    The homogeneous precipitation method enabled the control of the assembly of mesoporous silicas by the variation of the decrease in pH. The synthesis of these materials was performed from an isotropic reaction mixture using a cationic surfactant as a structure directing agent. The decrease in pH, which causes the formation of solid particles, was achieved by hydrolysis of methyl acetate. The procedure enabled to obtain not only siliceous MCM-41 with the highest degree of pore ordering but also.
    Permanent Link: http://hdl.handle.net/11104/0077882


     
     

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