Cyclohexene and Cyclooctene Epoxidation with Aqueous Hydrogen Peroxide using 
Transition Metal-Free Sol-Gel Alumina as Catalyst

Rinaldi, Roberto; Sepulveda, Jorge; Schuchardt, Ulf

doi:10.1002/adsc.200303176

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Cyclohexene and Cyclooctene Epoxidation with Aqueous Hydrogen Peroxide using Transition Metal-Free Sol-Gel Alumina as Catalyst

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Rinaldi, Roberto
Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Instituto de Química, Universidade Estadual de Campinas, P.O. Box 6154, 13084 – 971 Campinas-SP, Brazil;

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Citation

Rinaldi, R., Sepulveda, J., & Schuchardt, U. (2004). Cyclohexene and Cyclooctene Epoxidation with Aqueous Hydrogen Peroxide using Transition Metal-Free Sol-Gel Alumina as Catalyst. Advanced Synthesis & Catalysis, 346(2-3), 281-285. doi:10.1002/adsc.200303176.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-20D8-E

Abstract

It is shown that sol-gel alumina calcined at 400 ⁰C is a very efficient catalyst for the epoxidation of cyclohexene and cyclooctene with aqueous 70 wt % hydrogen peroxide. The overall yield per g of catalyst was 0.28 mol of cyclohexene oxide in 5 cycles of 450 min each and 0.43 mol of cyclooctene oxide in 4 cycles of 750 min each. The selectivity for the epoxides was always better than 99%. However, the catalyst deactives slowly, which we believe is caused by a non-radical decomposition of hydrogen peroxide.