New way to synthesize MCM-41 and MCM-48 materials with tailored pore sizes

Jean-Luc Blin, Gontran Herrier, Carole Otjacques, Bao-Lian Su

    Research output: Contribution to journalArticle

    Abstract

    The present work shows that by adjusting the molar ratio of two swelling agents : decane and TMB, the crystallization temperature and time, either the large pore hexagonal Si-MCM-41 or cubic Si-MCM-48 can be obtained. The characterization of these two structures by SEM, TEM, nitrogen adsorption-desorption analysis is reported. Their thermal stability has been also evaluated. It has been found that the decane and TMB concentration and the crystallization temperature can affect strongly the final structure of the products. The phase transition of cubic MCM-48 to hexagonal MCM-41 with increasing of TMB or decane concentration is explained by considering the surfactant packing parameter g (V/aslc). However, to explain the MCM-41 to MCM-48 transition with increasing crystallization temperature, some complementary studies should be made.
    Original languageEnglish
    Pages (from-to)57-66
    Number of pages10
    JournalStudies in surface science and catalysis
    Volume129
    Publication statusPublished - 2000

    Keywords

    • thermal stability
    • swelling agents
    • MCM-41
    • tailored pore size
    • phase transition
    • MCM-48
    • decane/TMB

    Fingerprint

    Dive into the research topics of 'New way to synthesize MCM-41 and MCM-48 materials with tailored pore sizes'. Together they form a unique fingerprint.

    Cite this