NANOSCIOPIC TIN OXIDE FILMS ON MESOPOROUS SILICA AS NOVEL CATALYSTS FOR HYDROGEN TRANSFER REACTIONS. Tsang, S C, Burch, R, Nishiyama, S, Gleeson, D, Cruise, N A, Glidle, A, & Caps, V abstract bibtex Deposition of tin-oxygen species on mesoporous silica (MCM41) was achieved via chemical reaction of &Et4 vapour with surface silanol groups followed by heat treatment in air. At low Sn loading, EXAFS studies indicate six Sn-0 interactions at an average dist#anceof 2.043 A and Sn-Si interactions at a distance of 3.791 A. This suggests that SnO6 octahedra were formed which anchored onto the surface of MCM-41 via Sn-0-Si bona!s. At high Sn loading, tin oxide nanoctystallites (Sn02) with rutile structure are evident (TEM, XRD). It was found that these mesoporous-silica supported tin oxides, after H2 pre-treatment, showed higher activity than bulk Sn02 supported on conventional silica in catalysing the hydrogen transfer reaction from a secondary alcohol to an unsaturated aldehyde. 01999 Acta A4etallurgicaInc.
@article{tsang_nanosciopic_nodate,
title = {{NANOSCIOPIC} {TIN} {OXIDE} {FILMS} {ON} {MESOPOROUS} {SILICA} {AS} {NOVEL} {CATALYSTS} {FOR} {HYDROGEN} {TRANSFER} {REACTIONS}},
abstract = {Deposition of tin-oxygen species on mesoporous silica (MCM41) was achieved via chemical reaction of \&Et4 vapour with surface silanol groups followed by heat treatment in air. At low Sn loading, EXAFS studies indicate six Sn-0 interactions at an average dist\#anceof 2.043 A and Sn-Si interactions at a distance of 3.791 A. This suggests that SnO6 octahedra were formed which anchored onto the surface of MCM-41 via Sn-0-Si bona!s. At high Sn loading, tin oxide nanoctystallites (Sn02) with rutile structure are evident (TEM, XRD). It was found that these mesoporous-silica supported tin oxides, after H2 pre-treatment, showed higher activity than bulk Sn02 supported on conventional silica in catalysing the hydrogen transfer reaction from a secondary alcohol to an unsaturated aldehyde. 01999 Acta A4etallurgicaInc.},
language = {en},
author = {Tsang, S C and Burch, R and Nishiyama, S and Gleeson, D and Cruise, N A and Glidle, A and Caps, V},
pages = {4},
}
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