Abstract
Oxidative dehydrogenation of n-butene to 1,3-butadiene over ZnFe2O4 catalyst mixed with Cs x H3−x PW12O40 heteropolyacid (HPA) was performed in a continuous flow fixed-bed reactor. The effect of Cs x H3−x PW12O40 addition on the catalytic performance of ZnFe2O4 was investigated. Cs x H3−x PW12O40 itself showed very low catalytic performance in the oxidative dehydrogenation of n-butene. However, addition of small amount of Cs x H3−x PW12O40 into ZnFe2O4 enhanced the catalytic performance of ZnFe2O4 catalyst. The catalytic performance of ZnFe2O4-Cs x H3−x PW12O40 mixed catalysts was closely related to the surface acidity of Cs x H3−x PW12O40. Among the catalysts tested, ZnFe2O4-Cs2.5H0.5 PW12O40 mixed catalyst showed the best catalytic performance. Strong acid strength and large surface acidity of Cs2.5H0.5PW12O40 was responsible for high catalytic performance of ZnFe2O4-Cs2.5H0.5PW12O40 mixed catalyst. Thus, Cs2.5H0.5PW12O40 could be utilized as an efficient promoter and diluent in formulating ZnFe2O4 catalyst for the oxidative dehydrogenation of n-butene.
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Lee, H., Jung, J.C., Kim, H. et al. Effect of Cs x H3−x PW12O40 addition on the catalytic performance of ZnFe2O4 in the oxidative dehydrogenation of n-butene to 1,3-butadiene. Korean J. Chem. Eng. 26, 994–998 (2009). https://doi.org/10.1007/s11814-009-0165-z
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DOI: https://doi.org/10.1007/s11814-009-0165-z