文摘
Bi<sub>3sub>Mo<sub>2sub>Fe<sub>1sub>P<sub> x sub> oxide catalysts were prepared by a co-precipitation method and the influence of phosphorous content on the catalytic performance in the oxidative dehydrogenation of 1-butene was investigated. The addition of phosphorous up to 0.4mole ratio to Bi<sub>3sub>Mo<sub>2sub>Fe<sub>1sub> oxide catalyst led to an increase in the catalytic performance; however, a higher phosphorous content (above P=0.4) led to a decrease of conversion. Of the tested catalysts, Bi<sub>3sub>Mo<sub>2sub>Fe<sub>1sub>P<sub>0.4sub> oxide catalyst exhibited the highest catalytic performance. Characterization results showed that the catalytic performance was related to the quantity of a π-allylic intermediate, facile desorption behavior of adsorbed intermediates and ability for re-oxidation of catalysts.