Adsorption isotherm of water vapor and its large hysteresis on highly ordered mesoporous silica

Shinji Inagaki, Aki Fukushima, Kazuo Kuroda, Kazuyuki Kuroda

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    76 Citations (Scopus)

    Abstract

    The first and second adsorption-desorption isotherms of water vapor on a new mesoporous material derived from kanemite have been measured. The isotherms show unusual type V isotherms and large hysteresis. The type V isotherms, which have never been observed for the other adsorbates, suggest that the mesoporous material has a hydrophobic surface, although the hydrophobicity decreased after treatment with water vapor because of rehydration of the surface. The significantly large hysteresis could be explained by the difference in contact angle between adsorption and desorption.

    Original languageEnglish
    Pages (from-to)623-624
    Number of pages2
    JournalJournal of Colloid and Interface Science
    Volume180
    Issue number2
    DOIs
    Publication statusPublished - 1996 Jun 25

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    Keywords

    • hydrophobicity
    • hysteresis
    • mesoporous material
    • water vapor

    ASJC Scopus subject areas

    • Colloid and Surface Chemistry
    • Physical and Theoretical Chemistry
    • Surfaces and Interfaces

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