화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.26, No.4, 994-998, July, 2009
DOI10.1007/s11814-009-0165-z  Export Citation
Effect of Cs(x)H(3-x)PW(12)O(40) addition on the catalytic performance of ZnFe(2)O(4) in the oxidative dehydrogenation of n-butene to 1,3-butadiene
Howon Lee, Ji Chul Jung, Heesoo Kim, Young-Min Chung1, Tae Jin Kim1, Seong Jun Lee1, Seung-Hoon Oh1, Yong Seung Kim1, and In Kyu Song†
  • School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul 151-744, Korea
  • 1SK Energy Corporation, Yuseong-gu, Daejeon 305-712, Korea
E-mail:
Oxidative dehydrogenation of n-butene to 1,3-butadiene over ZnFe(2)O(4) catalyst mixed with Cs(x)H(3-x)PW(12)O(40) heteropolyacid (HPA) was performed in a continuous flow fixed-bed reactor. The effect of Cs(x)H(3-x)PW(12)O(40) addition on the catalytic performance of ZnFe(2)O(4) was investigated. Cs(x)H(3-x)PW(12)O(40) itself showed very low catalytic performance in the oxidative dehydrogenation of n-butene. However, addition of small amount of Cs(x)H(3-x)PW(12)O(40) into ZnFe(2)O(4) enhanced the catalytic performance of ZnFe(2)O(4) catalyst. The catalytic performance of ZnFe(2)O(4)-Cs(x)H(3-x)PW(12)O(40) mixed catalysts was closely related to the surface acidity of Cs(x)H(3-x)PW(12)O(40). Among the catalysts tested, ZnFe(2)O(4)-Cs(2.5)H(0.5)PW(12)O(40) mixed catalyst showed the best catalytic performance. Strong acid strength and large surface acidity of Cs(2.5)H(0.5)PW(12)O(40) was responsible for high catalytic performance of ZnFe(2)O(4)-Cs(2.5)H(0.5)PW(12)O(40) mixed catalyst. Thus, Cs(2.5)H(0.5)PW(12)O(40) could be utilized as an efficient promoter and diluent in formulating ZnFe(2)O(4) catalyst for the oxidative dehydrogenation of n-butene.
Keywords:Zinc Ferrite;n-Butene;1,3-Butadiene;Oxidative Dehydrogenation;Cesium-exchanged Heteropolyacid
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