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Ranran Xia,Zhenhuan Li,Bo-wen Cheng,Kunmei Su 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.3
Transesterification of dimethyl carbonate (DMC) with hydrogenated bisphenol A (HBPA) was studiedover various organotin oxides under pressured condition without removal of by-producing methanol. Bu2SnO displayedhigher activities in HBPA conversion and bis-methylcarbonate of hydrogenated bisphenol-A (BMHBPA) synthesis,and HBPA conversion and BMHBPA selectivity reached 97.4% and 84.0%. However, when Ph2SnO was used as catalyst,HBPA conversion and BMHBPA selectivity decreased to 81.5 and 37.7%. Catalyst steric hindrance significantlyinfluenced HBPA conversion and BMHBPA formation, and π-d interaction between phenyl ring and Sn wasunfavorable for the transesterification of HBPA with DMC. Moreover, the catalytic system was further optimized.