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Epoxidation of olefins by molybdenum(VI) catalysts supported on functional polyimide particulates

Ahn, J.H. and Kim, J.C. and Ihm, S.K. and Oh, C.G. and Sherrington, D.C. (2005) Epoxidation of olefins by molybdenum(VI) catalysts supported on functional polyimide particulates. Industrial and Engineering Chemistry Research, 44 (23). pp. 8560-8564. ISSN 0888-5885

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Abstract

Functional polyimides have been prepared in a bead form by nonaqueous suspension polycondensation. A molybdenum(VI) complex was supported on the functional polyimide particulates containing a triazole group and used as a catalyst in the liquid-phase epoxidation of higher olefins with tert-butyl hydroperoxide as the oxygen source. Serious degradation of the polyimide-supported Mo(VI) catalyst does not happen in air until similar to 400 degrees C. The polyimide-supported Mo catalyst was highly active and selective and could be recycled 10 times with no detectable loss of Mo from the support.