Kinetic Evaluation of the Set of Reactions in the Selective Hydrogenation of 1-Butyne and 1,3-Butadiene in Presence of n-Butenes

Ind. Eng. Chem. Res., 2013, 52 (17), pp 5849–5861, DOI: 10.1021/ie3029027
Kinetic Evaluation of the Set of Reactions in the Selective Hydrogenation of 1-Butyne and 1,3-Butadiene in Presence of n-Butenes
Javier A. Alves *†‡, Sergio P. Bressa †‡, Osvaldo M. Martínez †‡, and Guillermo F. Barreto †‡
† PROIRQ, Área Departamental Ingeniería Química, Facultad de Ingeniería, The National University of La Plata (UNLP), CP 1900 La Plata, Argentina
‡ Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. J. J. Ronco” (CINDECA), CCT-La Plata-CONICET - The National University of La Plata (UNLP), calle 47 No. 257, CP 1900 La Plata, Argentina
jalves@quimica.unlp.edu.ar
Abstract
Presents results of an investigation of the selective hydrogenation in the liquid phase of 1-butyne and 1,3-butadiene in the presence of n-butenes over a commercial Pd/Al₂O₃ egg-shell catalyst. While hydrogenation of the n-butenes and their isomerization are normally undesirable, it is advisable to evaluate the kinetics of these reactions so as to carry out the process at efficient operating conditions.
Authors describe the effect of temperature on the specific rate coefficients of 1,3-butadiene hydrogenation reactions and 1-butene, cis-2-butene, and trans-2-butene hydrogenation and isomerization reactions using measurements in a batch reactor system. Their study results and previous kinetic characterization enable the evaluation of the most relevant parameters of a set of kinetic expressions for the 10 overall reactions that govern the system transformation.
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