Effect of the Surfactant on the Catalytic Activity of TiO2/CNT for Transesterification between Dimethyl Carbonate and Phenol
Ge Xin1,2 Li Bijing1,2 Hu Jing1 Chen Tong*,1 Wang Gongying*,1 Hu Xuteng3
(1 Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041)
(2 Graduate University of Chinese Academy of Sciences, Beijing 100049)
(3 Research Institute of Petroleum Processing, China Petrochemical Corporation, Beijing 100083)
Abstract：Carbon nanotubes (CNT) were modified by cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS), and used to prepare catalyst TiO2/CNT. The catalytic activity of TiO2/CNT was tested by the transesterification between phenol and dimethyl carbonate (DMC). The catalysts were characterized by X-ray diffraction, SEM and TEM. The results showed crystalline TiO2 were not yet formed, while amorphous was favorable to the transesterification. ICP results approved that more active species were loaded on CNT modified by surfactant. Furthermore, influence of the sort of surfactant on catalytic activity was studied, and the result showed that cationic surfactant was suited to TiO2/CNT for the transesterification between phenol and DMC. TiO2/CNT-C catalyst had a preferable reuse due to the electrostatic interaction between active species TiO2 and support CNT-C.
葛鑫, 李碧静, 胡静, 陈彤, 王公应, 胡徐腾. 表面活性剂对TiO2/CNT苯酚与碳酸二甲酯酯交换活性的影响[J]. 化学学报, 2011, 69(19): 2328-2334.
GE Xin, LI Bi-Jing, HU Jing, CHEN Tong, WANG Gong-Ying, HU Xu-Teng. Effect of the Surfactant on the Catalytic Activity of TiO2/CNT for Transesterification between Dimethyl Carbonate and Phenol. Acta Chimica Sinica, 2011, 69(19): 2328-2334.