Synthesis of Didodecyl Carbonate via Transesterification Catalyzed by KF/MgO

• Published in: Chinese journal of chemical engineering Vol. 17; no. 5; pp. 883 - 886
• Main Author: 范燕平 王庆印 杨先贵 姚洁 王公应
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2009
• Subjects: Calcination; Carbonates; Catalysis; Catalysts; didodecyl carbonate; dimethyl carbonate; Magnesium oxide; Roasting; supported KF catalyst; Synthesis; Transesterification; 催化性能; 十二烷基; 氧化镁; 焙烧温度; 煅烧过程; 碳酸二甲酯; 酯交换反应; didodecyl carbonate; dimethyl carbonate; supported KF catalyst; transesterification
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/S1004-9541(08)60292-X

The catalytic properties of KF/MgO for the synthesis of didodecyl carbonate （DDC） by transesterification from dimethyl carbonate （DMC） and dodecanol were studied.The effects of loading amount of KF and calcining temperature were systemically investigated.The phase structure was characterized by X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FTIR）.Interaction between KF and the carrier MgO occurred in the process of calcination,and a new phase K2MgF4 formed when calcining temperature was 673 K or above.FTIR results showed that K2CO3 was observed when catalysts calcined in air.When calcining temperature was 873 K and the loading mass amount of KF was 30%,the KF/MgO catalyst exhibited the optimal catalytic properties and the yield of DDC was maximized to 80%.The excellent catalytic properties of KF/MgO was ascribed to the formation of K2MgF4＋K2CO3 during the calcination in air.