In-situ studies of the formation mechanism of SBA-15

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Abstract

The formation process of SBA-15 has been investigated by time resolved TEM, in-situ SAXS/SAXD and in-situ NMR. The synthesis was done at 35 degrees in acidic solution with tetramethylorthosilicate as the silica source and Pluronic P123 as the structure directing amphiphile. The initially formed silica-polymer composite consists of flocs of spherical micelles in a silica matrix. The micelles then coalesce forming rods that eventually pack into the ordered array of which SBA-15 consists.

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  • Physical Chemistry
Original languageEnglish
Pages (from-to)69-74
JournalStudies in Surface Science and Catalysis
Volume156
Publication statusPublished - 2005
Publication categoryResearch
Peer-reviewedYes