C. Lee, D. Ahn, Bor-Ping Wang
Apr 6, 2001
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Influential Citations
35
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Journal
Microporous and Mesoporous Materials
Abstract
Abstract FeCl 2 and 3-aminopropyltrimethoxysilane (ATMS) were grafted on Si-MCM-41. FeCl 2 , FeCl 3 , FePc(II) and FePc(III)Cl were also grafted with ATMS coupled Si-MCM-41, whose catalytic activities were evaluated by performing hydroxylation of phenol with H 2 O 2 . These chemically modified Fe-containing samples were characterized by FT-IR. When the FeCl 2 /Si-MCM-41 is used, the phenol conversion reveals about 16.5%. ATMS coupled Fe-containing Si-MCM-41 catalysts improve phenol conversion by 1.5–2 times and decrease the formation of benzoquinone remarkably, while catechol/hydroquinone is in the range of 2–3.5. The redox behavior between Fe(II) and Fe(III) is discussed based on ESR spectroscopy.