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Cobalt oxide (CoOx) prepared by a direct calcination of cobalt nitrate was considerably active for the epoxidation of styrene with air in DMF under mild conditions. A substrate conversion of 75.8mol% with an epoxide selectivity of 82.1% was achieved at 353K over 10mg of cobalt oxide catalyst. Once CoOx was loaded on the support SiO 2 through a simple procedure consisting of wet impregnation,...
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