Preparation of MoVTeNb Compound Metal Oxide as Catalysts and Its Evaluation
Wang Jian Zhao Mi Bing Guoqiang Liu Hongzhong(Daqing Petroleum Institute,Daqing 163318)
MoVTeNb compound metal oxide was a kind of catalyst with the best catalytic activity in direct oxidation of propane into acrylic acid. The methods to prepare compound metal oxide as catalysts were briefly introduced. The effects of different source of Te in compound metal oxide and precalcination temperature on the catalytic activities were examined. The result showed that the catalyst prepared from telluric acid had better catalytic activity and the catalyst prepared from tellurium dioxide had obviously improved catalytic activity with improved product yield after precalcination at 300 ℃.