One-step solvent-free synthesis of cyclic carbonates by oxidative carboxylation of styrenes over a recyclable Ti-containing catalyst N. V. Maksimchuk, I. D. Ivanchikova, A. B. Ayupov, O. A. Kholdeeva
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ArticleSubject(s): углекислый газ | карбонаты | карбоксилирование | стиролGenre/Form: статьи в журналах Online resources: Click here to access online
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Applied catalysis B: Environmental Vol. 181. P. 363-370Abstract: A mesoporous titanium-silicate prepared by evaporation-induced self-assembly is an efficient heterogeneous catalyst for the one-step oxidative carboxylation of styrenes with tert-butyl hydroperoxide and carbon dioxide in the presence of tetrabutylammonium bromide as cocatalyst under mild solvent-free conditions (50–70 °C, 8 bar CO2). The selectivity to cyclic carbonates reaches 69–70% at 92–98.5% substrate conversion. The catalyst can be easily recovered by filtration and reused several times without a significant deterioration of the catalytic performance. The volume yield of SC as high as 1.1 kg/L could be achieved after seven reuses.
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A mesoporous titanium-silicate prepared by evaporation-induced self-assembly is an efficient heterogeneous catalyst for the one-step oxidative carboxylation of styrenes with tert-butyl hydroperoxide and carbon dioxide in the presence of tetrabutylammonium bromide as cocatalyst under mild solvent-free conditions (50–70 °C, 8 bar CO2). The selectivity to cyclic carbonates reaches 69–70% at 92–98.5% substrate conversion. The catalyst can be easily recovered by filtration and reused several times without a significant deterioration of the catalytic performance. The volume yield of SC as high as 1.1 kg/L could be achieved after seven reuses.
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