Oxidative Dehydrogenation of n-Butene to 1,3-Butadiene over Sulfated ZnFe2O4 Catalyst
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Oxidative dehydrogenation of n-butene to 1,3-butadiene over sulfated ZnFe2O4 catalyst was carried out in a continuous flow fixed-bed reactor. The effect of sulfation on the catalytic performance of ZnFe2O4 was investigated. Sulfated ZnFe2O4 catalyst showed a better catalytic performance than ZnFe2O4 catalyst in the oxidative dehydrogenation of n-butene. Acid–base property of sulfated ZnFe2O4 catalyst was measured by TPD experiment, with an aim of correlating the catalytic performance with the surface acid–base property of the catalyst. It was revealed that the catalytic performance of sulfated ZnFe2O4 catalyst was closely related to the surface weak-acid density of the catalyst. The enhanced acidity of sulfated ZnFe2O4 catalyst was responsible for its high catalytic performance in the oxidative dehydrogenation of n-butene. Thus, sulfation served as an efficient method for improving catalytic performance of ZnFe2O4 in the oxidative dehydrogenation of n-butene.
KeywordsZinc ferrite n-Butene 1,3-Butadiene Oxidative dehydrogenation Sulfated zinc ferrite
The authors acknowledge supports from Ministry of Knowledge Economy, Korea.