caa a22 4500 445387807 CHVBK 20180317143037.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s11144-011-0302-7 doi (NATIONALLICENCE)springer-10.1007/s11144-011-0302-7 Hβ supported K2CO3 catalysts for dipropyl carbonate synthesis from transesterification route [Elektronische Daten] [Pingbo Zhang, Lianxiang Kang, Caiyun Shu, Mingming Fan] 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 10h and the suitable reaction temperature was about 363K 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 10h 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. Akadémiai Kiadó, Budapest, Hungary, 2011 Transesterification nationallicence Dipropyl carbonate nationallicence Dimethyl carbonate nationallicence Hβ nationallicence Zhang Pingbo School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut Kang Lianxiang School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut Shu Caiyun School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut Fan Mingming School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 103/1(2011-06-01), 209-217 1878-5190 103:1<209 2011 103 11144 https://doi.org/10.1007/s11144-011-0302-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-011-0302-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Pingbo School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut NATIONALLICENCE 700 1- Kang Lianxiang School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut NATIONALLICENCE 700 1- Shu Caiyun School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut NATIONALLICENCE 700 1- Fan Mingming School of Chemical and Material Engineering, Jiangnan University, 214122, Wuxi, People's Republic of China aut NATIONALLICENCE 773 0- Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 103/1(2011-06-01), 209-217 1878-5190 103:1<209 2011 103 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer