V-Mg-O catalyst was prepared. The reaction kinetics of the oxidative dehydrogenation of butane over V-Mg-O catalyst was investigated. The catalyst was characterized by BET and X-ray diffraction. The kinetic tests were carried out between 793-873 K by changing the contact time (W/F) and the partial pressure of both butane and oxygen. Under all experiment conditions, the main products were dehydrogenation products (butene and butadiene), CO and CO2. A reaction network including the formation of C4 olefins and carbon oxides was proposed. The suitable power law kinetic equations were obtained from the kinetic measurements. Since the apparent activation energies of oxydehydrogenation reactions are higher than that of deep oxidation reaction of C4 olefins, the selectivity to C4 olefins increases with the reaction temperature when the conversion is the same.
|Original language||English (US)|
|Number of pages||6|
|Journal||Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities|
|State||Published - Jun 1 2001|
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)