期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 113, 期 1-3, 页码 212-223出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2007.11.030
关键词
amino functionalization; SBA-1; sucrose; co-condensation; auxiliary agent
Well-ordered and stable aminopropyl-functionalized mesoporous SBA-1 materials have been prepared by co-condensation of tetramethoxysilane (TMOS) or tetraethoxysilane (TEOS) with 3-aminopropyltrimethoxysilane (APTMS) using cetyltriethylammonium bromide (CTEABr) as pore-directing agent under strong acidic conditions. Prehydrolysis of TMOS prior to the addition of APTMS was a preliminary and key step for preparation of the well-ordered SBA-1 materials with amino functionality under acidic conditions. Solid-state C-13 and Si-29 MAS NMR spectroscopy demonstrated the successful incorporation of the aminopropyl groups in SBA-1. The aminopropyl-functionalized SBA-1 materials prepared with the acid medium H2SO4 showed better structural properties than those prepared with the acid medium HCl. A facile synthesis route by using sucrose as an auxiliary agent was developed to prepare amino-functionalized SBA-1 materials with excellent textural properties. (C) 2007 Elsevier Inc. All rights reserved.
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