Artículos de revistas
Cyclohexene and cycloodene epoxidation with aqueous hydrogen peroxide using transition metal-free sol-gel alumina as catalyst
Registro en:
Advanced Synthesis & Catalysis. Wiley-v C H Verlag Gmbh, v. 346, n. 41700, n. 281, n. 285, 2004.
1615-4150
WOS:000220763400023
10.1002/adsc.200303176
Autor
Rinaldi, R
Sepulveda, J
Schuchardt, U
Institución
Resumen
It is shown that sol-gel alumina calcined at 400 degreesC 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. 346 41700 281 285