Characterization and kinetic study of BiMoLax oxide catalysts for oxidative dehydrogenation of 1-butene to 1,3-butadiene

摘要

BiMoLax oxide catalysts with a variation of lanthanum component were prepared by a co-precipitation method, and applied to the oxidative dehydrogenation (ODH) of 1-butene to 1,3-butadiene (BD). The results reveal that the lanthanum content has significant effects on the catalyst performance. BiMoLa0.2 exhibits the superior activity and stability during the 100 h test H-2 temperature-programmed reduction (H-2-TPR), 1-Butene temperature-programmed re-oxidation (TPRO) and temperature-programmed desorption (TPD) characterization show that the oxygen mobility and the adsorption ability of 1-butene of catalysts are two crucial factors determining catalytic performance in ODH reaction. The kinetics analysis Finds that the ODH reaction over BiMoLa0.2 can occur more easily. (C) 2014 Elsevier Ltd. All rights reserved.