Catalytic Activity of Boron-Beta Zeolite Modified with Indium in the Epoxidation of Cinnamyl Alcohol |
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| Authors: | Rayna Dimitrova, Yanka Neinska, Magdolna R. Mihá lyi, Tanya Tsoncheva Maya Spassova |
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| Affiliation: | (1) Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;(2) Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Budapest, P.O.Box 15, H-1525, Hungary |
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| Abstract: | Liquid-phase epoxidation of cinnamyl alcohol was carried out with hydrogen peroxide as oxidizing agent using indium-containing boron- and aluminium-beta zeolites. It was proved that InO+ ions, created by oxidation of univalent indium cations incorporated into beta zeolite by reductive solid-state ion exchange, play an important role in the activation of hydrogen peroxide. The indium-hydroperoxo complex formed in beta zeolite pores was found to be accessible by the bulky cinnamyl alcohol molecules. Among the applied catalysts In/H[B]-beta (containing 7.6% In2O3/g) showed the highest selectivity in cinnamyl alcohol epoxidation. |
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| Keywords: | Boron-beta zeolite indium cations cinnamyl alcohol epoxidation |
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