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Hβ supported K2CO3 catalysts for dipropyl carbonate synthesis from transesterification route

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Abstract

The catalytic performance of the microporous Hβ sieve supported K2CO3 catalyst for the synthesis of dipropyl carbonates (DPC) by transesterification of dimethyl carbonate (DMC) with propyl alcohol was investigated at atmospheric pressure, and the optimized reaction conditions were acquired. The catalyst of Hβ with 28% K2CO3-loading performed best, giving 94.4% conversion of DMC and 58.7% selectivity to DPC. An optimum reactant molar ratio n(propyl alcohol)/n(DMC) existed for catalytic activity, which was about 3/1. The optimum reaction time was 10 h and the suitable reaction temperature was about 363 K considering various factors. The XRD results indicated that the structure of Hβ was gradually deformed with the increase in the K2CO3 loading. From nitrogen physisorption, it could be concluded that the improvement of the catalytic activities with the optimized K2CO3-loading about 28% can be ascribed to both enough active sites and preferable surface area and bigger pore diameter. There was no significant difference between the IR spectrums of K2CO3/Hβ catalyst before and after a 10 h reaction, which was consistent with that K2CO3/Hβ catalyst had excellent utility for repeated use. The possible mechanism of the transesterification reaction was also discussed.

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Acknowledgments

The authors gratefully acknowledge the financial support from the Self-determined Research Program of Jiangnan University (JUSRP30905), the Science Foundation for Youth of Jiangnan University (2009LQN14).

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Authors and Affiliations

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, People’s Republic of China

    Pingbo Zhang, Lianxiang Kang, Caiyun Shu & Mingming Fan

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  1. Pingbo Zhang
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  2. Lianxiang Kang
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  3. Caiyun Shu
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  4. Mingming Fan
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Correspondence to Mingming Fan.

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Zhang, P., Kang, L., Shu, C. et al. Hβ supported K2CO3 catalysts for dipropyl carbonate synthesis from transesterification route. Reac Kinet Mech Cat 103, 209–217 (2011). https://doi.org/10.1007/s11144-011-0302-7

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  • DOI: https://doi.org/10.1007/s11144-011-0302-7

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