E-viri
Recenzirano
-
Wang, Lixia; Zhu, Wanchun; Zheng, Dafang; Yu, Xue; Cui, Jing; Jia, Mingjun; Zhang, Wenxiang; Wang, Zhenlu
Reaction kinetics, mechanisms and catalysis, 12/2010, Letnik: 101, Številka: 2Journal Article
The reaction of direct transformation of ethanol to ethyl acetate was investigated on reduced Cu/ZrO 2 catalysts prepared by a co-precipitation procedure. The catalytic performances of these Cu–Zr mixed oxides were considerably influenced by changing the molar ratio of Cu to Zr. The highest selectivity to ethyl acetate was found over Cu/ZrO 2 (1) catalyst (molar ratio of Cu to Zr was 1). A variety of characterization techniques, such as N 2 adsorption, XRD, XPS, TPR and NH 3 -TPD were carried out on the catalysts. The results revealed that the presence of a certain amount of Cu + species may play very important role in improving the selectivity to ethyl acetate of the Cu/ZrO 2 catalysts.
