Wang Zhenzhen, Tian Xike, Yang Chao, Zhao Yanxi, Pi Zhenbang
Faculty of Material Science and Chemistry Engineering, China University of Geosciences, Wuhan 430074, PR China.
J Nanosci Nanotechnol. 2009 Dec;9(12):6876-82. doi: 10.1166/jnn.2009.1473.
Alumina is the most frequently employed catalyst or catalytic support in the chemical industry. The catalytic performances of alumina-supported catalysts are largely dependent on the textural properties of the alumina supports. Therefore, any improvement of the alumina properties significant for their catalytic applications is extremely challenging. Ordered mesoporous aluminas with high thermal stability have been successfully prepared by a facile synthesis method. Using the ordered mesoporous aluminas as support, V/Ni-catalysts mesoporous materials also have been prepared by vacuum impregnation method and the coprecipitation method. The mesoporous structures are characterized by XRD, TEM, N2 adsorption -desorption and TG-DTA. Preliminary catalytic tests showed that the ordered mesoporous aluminas prepared in such a way exhibited superior performance in the oxidative dehydrogenation of propane to propylene when they were used as the supports for V and Ni catalysts.
氧化铝是化学工业中最常用的催化剂或催化载体。负载在氧化铝上的催化剂的催化性能在很大程度上取决于氧化铝载体的织构性质。因此，对氧化铝性能进行任何对其催化应用有重要意义的改进都极具挑战性。通过一种简便的合成方法已成功制备出具有高热稳定性的有序介孔氧化铝。以有序介孔氧化铝为载体，还通过真空浸渍法和共沉淀法制备了V/Ni催化剂介孔材料。采用XRD、TEM、N₂吸附 - 脱附和TG - DTA对介孔结构进行了表征。初步催化试验表明，以这种方式制备的有序介孔氧化铝用作V和Ni催化剂的载体时，在丙烷氧化脱氢制丙烯反应中表现出优异的性能。
