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A Three-Dimensional Mesoporous Titanosilicate Support for Gold Nanoparticles: Vapor-Phase Epoxidation of Propene with High Conversion


  • A.K.S. thanks JSPS and AIST, Japan for a fellowship. S.S. acknowledges NEDO, Japan for a fellowship.


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Direct selective gas-phase epoxidation of propene with commercially viable conversion has been achieved with catalysts consisting of gold nanoparticles (3–5 nm) supported on large-pore (>7 nm) silylated mesoporous titanosilicates with Ba(NO3)2 as a promoter. The picture provides a plausible mechanism for the synergetic cooperation of the Au and Ti sites, which is superimposed onto a TEM image of the material.

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