Nanoscopic tin-oxygen linings on mesoporous silica as a novel catalyst for organic hydrogen transfer reaction
作者： R Burch , V Caps , D Gleeson , S Nishiyama , S.C Tsang
DOI: 10.1016/S0926-860X(99)00376-2
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摘要: Abstract Deposition of tin-oxygen species on mesoporous silica (MCM-41) was achieved via chemical reaction SnEt 4 vapour with surface silanol groups followed by heat treatment in air. Evidence suggested that highly reactive overlayers were formed the internal MCM-41 silica. These modified silicas, after H 2 pre-treatment, showed excellent activity catalysing reduction crotonaldehyde to crotyl alcohol using propan-2-ol as hydrogen transfer agent (acetone by-product). It also found catalytic per gram tin increased dramatically loading decreased. The increase specific decrease attributed improved dispersion overlayers.
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