Kinetic study of the selective catalytic hydrogenation of 1,3-butadiene in a mixture of n-butenes

Abstract

The selective hydrogenation in liquid phase of 1,3-butadiene in the presence of n-butenes, over acommercial Pd/Al2O3 catalyst of the egg-shell type was studied.Experiments were carried out in a batch reactor at 44 8C. Initial concentration were in the range of1%?2% of 1,3-butadiene, up to 10% of 1-butene, trans-2-butene and cis-2-butene. Partial hydrogenpressures ( pH2) were between 1 and 8 atm.Two kinetic models were proposed to fit the experimental data. Both models give an adequaterepresentation of the experimental data