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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 17, 2002
Accepted May 20, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ethylene Selectivity Variation in Acetylene Hydrogenation Reactor with the Hydrogen/Acetylene Ratio at the Reactor Inlet

Woo Jae Kim Chang Hun Choi Sang Heup Moon^†

School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, San 56-1, Shillim-dong, Kwanak-ku, Seoul 151-744, Korea

shmoon@surf.snu.ac.kr

Korean Journal of Chemical Engineering, July 2002, 19(4), 617-621(5), 10.1007/BF02699306

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Abstract

Variation in the selectivity of ethylene produced by acetylene hydrogenation in an integral reactor was analyzed as a function of the hydrogen/acetylene ratio in the reaction stream at the reactor inlet. The analyses were made for two sample catalysts, which showed different dependence of the ethylene selectivity on the reactant composition. Even a small mismatch between the hydrogen/acetylene ratio at the reactor inlet and the ratio for converted reactants caused a large change in the ethylene selectivity along the reactor position, particularly when the conversion_x000D_ was high. The results of this study indicate two important factors to be considered in the design and operation of acetylene hydrogenation process: the hydrogen/acetylene ratio in the reactor inlet should be controlled close to the ratio for converted reactants; and catalysts showing high ethylene selectivity over a wide range of the hydrogen/acetylene ratio are required for the design of a highly selective hydrogenation process.

Keywords

Acetylene Hydrogenation Pd Catalyst Ethylene Selectivity Acetylene Conversion Integral Reactor Reactant Ratio

References

Battiston GC, Dalloro L, Tauszik GR, Appl. Catal., 2, 1 (1982)
Cider L, Schoon NH, Ind. Eng. Chem. Res., 30, 1437 (1991)
Huang W, Hydrocarb. Process., 59(10), 131 (1979)
Lam WK, Lloyd L, Oil Gas J., 27, 66 (1972)
Lee DK, Korean J. Chem. Eng., 7(3), 233 (1990)
Leviness S, Nair V, Weiss AH, Schay Z, Cuczi L, J. Mol. Catal., 25, 131 (1984)
Park YH, Price GL, Ind. Eng. Chem. Res., 30, 1693 (1991)
Shin EW, Choi CH, Chang KS, Na YH, Moon SH, Catal. Today, 44(1-4), 137 (1998)
Shin EW, Cho SI, Kang JH, Kim WJ, Park JD, Moon SH, Korean J. Chem. Eng., 17(4), 468 (2000)
Shin EW, Kang JH, Kim WJ, Park JD, Moon SH, Appl. Catal. A: Gen., 223(1-2), 161 (2002)