Wang Guangjian, Xu Hao, Lu Kai, Ding Zhihao, Bing Liancheng
School of Chemical Engineering, Qingdao University of Science and Technology, Qingdao P.R. China.
Turk J Chem. 2020 Feb 11;44(1):112-124. doi: 10.3906/kim-1907-53. eCollection 2020.
Vanadium oxides, as highly efficiently catalysts, are widely applied in various catalytic reactions, such as the dehydrogenation of light alkanes and epoxidation of alkenes. In this paper, a series of VO /Al O catalysts were fabricated by the 1-pot method for catalytic propane dehydrogenation. The results indicated that the VO /Al O catalysts with loading of 10 wt.% vanadium exhibited optimized catalytic performance. The as-prepared catalysts were characterized by N adsorption-desorption, XRD, TEM, H -TPR, and XPS to explore the texture properties, morphology, and electronic environment of vanadium. In addition, several vanadium catalysts were also prepared by the incipient wetness impregnation (IWI) method to compare their catalytic performance with the 1-pot synthesized catalysts. The catalysts synthesized by the 1-pot method exhibited higher selectivity of propylene and longer catalyst lifetime at high propane conversion when compared to the counterpart synthesized by the IWI method.
钒氧化物作为高效催化剂，广泛应用于各种催化反应，如轻质烷烃的脱氢和烯烃的环氧化反应。本文采用一锅法制备了一系列用于丙烷催化脱氢的VO /Al O 催化剂。结果表明，钒负载量为10 wt.%的VO /Al O 催化剂表现出优化的催化性能。通过N 吸附-脱附、XRD、TEM、H -TPR和XPS对所制备的催化剂进行表征，以探究钒的织构性质、形态和电子环境。此外，还采用初湿浸渍（IWI）法制备了几种钒催化剂，以将其催化性能与一锅法合成的催化剂进行比较。与IWI法合成的对应催化剂相比，一锅法合成的催化剂在高丙烷转化率下表现出更高的丙烯选择性和更长的催化剂寿命。
