Journal
APPLIED CATALYSIS A-GENERAL
Volume 198, Issue 1-2, Pages 51-66Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0926-860X(99)00498-6
Keywords
acetylene-ethylene mixtures hydrogenation; palladium catalyst; reaction kinetics; kinetic model; coke deposits
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The kinetics of hydrogenation reactions of acetylene-ethylene mixtures over a Pd/alpha-Al2O3 commercial catalyst was studied. Reaction rates were measured by using a gradientless reactor. The kinetic expressions derived, based upon a mechanism involving two types of active sites produced on the palladium surface by carbonaceous deposits, were used for the interpretation of experimental results. The kinetic parameters in these equations and in recently published kinetic expressions were estimated by using multiresponse technique. Statistical analysis of regression showed that the proposed kinetic model describes the process more adequately than do the competitive models. (C) 2000 Elsevier Science B.V. All rights reserved.
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