Liquid Phase Hydrogenation of Naphthalene on Ni

摘要

The kinetics of naphthalene hydrogenation in decane was studied on a Ni/Al_2O_3 catalyst at 85-160℃ and 20-40 bar. The results indicate that the hydrogenation occurs by sequential steps from naphthalene through tetralin and octalins to cis- and trans-decalin. The main hydrogenation route is presumed to occur through Δ~(1,9)-octalin. Overall hydrogenation rate was about 1 .6 order for naphthalene and close to first order for tetralin and hydrogen. The rate of catalyst deactivation followed 0.2 order with respect to the rate of naphthalene hydrogenation and about 1.2 order with respect to the rate of tetralin hydrogenation.