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Lewis-type catalytic activity of direct incorporated Zr- and Sn-SBA-16 catalysts

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Metal incorporation into nanoporous materials could give Lewis acid sites through the framework substitution of silica matrix, which are supposed to be in tetrahedral substitution of silica. In this work, Zr- and Sn-incorporated SBA-16 were directly synthesized by the microwave synthesis method. These microwave synthesized Zr- and Sn-SBA-16 mesoporous silica materials were proven to have tetrahedral-positioned Zr and Sn species. Zr- and Sn-incorporated mesoporous silica materials were applied in activation of ketones by Lewis acid sites to catalyze Meerwein–Ponndorf–Verly reduction of cyclohexanone and Baeyer–Villiger oxidation of adamantanone, respectively. Optimum incorporated Zr- and Sn-species gave almost 100% selectivity with high activity onto corresponding alcohol and lactone, respectively.

Affiliations: 1: Laboratory of Nano-Green Catalysis and Nano Center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University, Incheon 402-751, South Korea


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