Synthesis of mesoporous aluminophosphates and their adsorption properties

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    Abstract

    Hexagonal mesostructured alkyltrimethylammonium-aluminophosphate materials were prepared by using hexadecyltrimethylammonium and dococyltrimethylammonium chlorides as surfactants and by utilizing 1,3,5-triisopropylbenzene as an auxiliary organic additive. Calcination of these materials at 600°C yielded thermally stable mesoporous aluminophosphate materials with large surface areas above 700 m2 g-1 and with pore diameters in the range from 1.8 to 3.9 nm. The hexagonal mesostructured materials before calcination had less condensed frameworks as determined by 31P MAS NMR, which caused certain shrinkages during calcination for the formation of the porous structures. Water and benzene adsorption data indicated that the mesoporous aluminophosphate materials had comparatively hydrophilic mesopores.

    Original languageEnglish
    Pages (from-to)115-126
    Number of pages12
    JournalMicroporous and Mesoporous Materials
    Volume22
    Issue number1-3
    Publication statusPublished - 1998 Jun 17

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    Keywords

    • Adsorption property
    • Aluminophosphate
    • Hydrophilicity
    • Mesoporous material
    • Pore size

    ASJC Scopus subject areas

    • Catalysis
    • Materials Science(all)

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