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Received March 29, 2008
Accepted April 21, 2008
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Effect of reaction conditions on the catalytic performance of Co9Fe3Bi1Mo12O51 in the oxidative dehydrogenation of n-butene to 1,3-butadiene
Ji Chul Jung
Howon Lee
Sunyoung Park
Young-Min Chung1
Tae Jin Kim1
Seong Jun Lee1
Seung-Hoon Oh1
Yong Seung Kim1
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
inksong@snu.ac.kr
Korean Journal of Chemical Engineering, November 2008, 25(6), 1316-1321(6), 10.1007/s11814-008-0215-y
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Abstract
Oxidative dehydrogenation of n-butene to 1,3-butadiene over Co9Fe3Bi1Mo12O51 catalyst was conducted in a continuous flow fixed-bed reactor. The effect of reaction conditions (steam/n-butene ratio, reaction temperature, and space velocity) on the catalytic performance of Co9Fe3Bi1Mo12O51 was investigated. Steam played an important role in decreasing contact time, suppressing total oxidation of n-butene, and removing coke during the reaction. Yield for 1,3-butadiene showed a volcano-shaped curve with respect to steam/n-butene ratio. The compensation between thermodynamic effect and kinetic effect led to a volcano-shaped curve of 1,3-butadiene yield with respect to reaction temperature. The Co9Fe3Bi1Mo12O51 catalyst showed the best catalytic performance at a certain value of space velocity. The optimum steam/n-butene ratio, reaction temperature, and gas hourly space velocity were found to be 15, 420 ℃, and 675 h^(-1), respectively.
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References
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