A kinetic study of the hydrogenation of ethyne and ethene on a commercial Pd/Al2O3 catalyst

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Bos, A.N.R. and Bootsma, E.S. and Foeth, F. and Sleijster, H.W.J. and Westerterp, K.R. (1993) A kinetic study of the hydrogenation of ethyne and ethene on a commercial Pd/Al2O3 catalyst. Chemical Engineering and Processing, 32 (1). pp. 53-63. ISSN 0255-2701

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Abstract:The kinetics of the hydrogenation of gas mixtures of ethyne and ethene on a commercial Pd catalyst was studied experimentally using a Berty reactor. The experimental conditions corresponded with typical industrial tail-end conditions, 0.3-1.3% C2H2, 0.4-4% H2, the balance being ethene. The influence of small amounts of carbon monoxide added to the feed gas was also investigated. The pressure was varied between 0.3 and 2.1 MPa and the temperature between 299 and 330 K. The maximum temperature was limited due to mechanical problems of the Berty reactor. Eight different sets of rate expressions, partially adapted from expressions previously proposed in the literature, have been tested. No `best¿ model was chosen, because many models were found to describe the data equally well. The prediction of the rate of ethane formation was less accurate than the prediction of the rate of ethyne hydrogenation. This was not only due to the higher experimental error involved, but also because ethane could be formed by alternative routes. In deriving adequate rate expressions for the rather complex system, a compromise has to be sought between the relative inaccuracy of the simpler expressions and the inability of determining the large number of parameters in more complex expressions.
Item Type:Article
Copyright:© 1993 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/10744
Official URL:http://dx.doi.org/10.1016/0255-2701(93)87006-G
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Metis ID: 105816