Highly active Ga promoted Co-HMS-X catalyst towards styrene epoxidation reaction using molecular O 2

Sumbul Rahman,Chiranjit Santra,Rawesh Kumar,Jitendra Bahadur,Asima Sultana,Ralf Schweins,D Sen,Sudip Maity,S K Mazumdar,Biswajit Chowdhury

Applied Catalysis A: General（2014）

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摘要

•Co-HMS-X catalyst showed catalytic activity for direct styrene epoxidation reaction.•Al, Ga and Tl (0.25mol%) are used as promoters in Co-HMS-X catalyst.•The highly active Ga-Co-HMS-X (Co/Ga=4) had large number of acidic sites.•The catalyst is stable up to three cycles.•It could epoxide cyclooctene with reasonably good conversion.

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关键词

Mesoporous silica,Cobalt,Molecular oxygen,Epoxidation,Promoter,Gallium

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