Kinetics and Mechanism of Desulfurization and Denitrogenation of Coal-Derived Liquids. Third Quarterly Report,December 20, 1975--March 20, 1976.

摘要

The high-pressure liquid-phase flow microreactor is a unique reactor for obtaining quantitative kinetic data for catalytic hydrodesulfurization and hydrodenitrogenation. The hydrodesulfurization of dibenzothiophene involves formation of biphenyl as a primary reaction product without hydrogenation of the aromatic rings. The catalytic hydrodenitrogenation of quinoline involves rapid hydrogenation of the nitrogen-containing ring followed by cracking of the ring to produce an aniline which is slowly hydrodenitrogenated. The hydrodenitrogenation reactions follow first-order kinetics. The order of activity of five commercial hydrotreating catalysts for quinoline hydrodenitrogenation is (Ni--Mo/Al sub 2 O sub 3 ) > (Ni--W/Al sub 2 O sub 3 ) > (Ni--W/Al sub 2 O sub 3 --SiO sub 2 ) > (Co--Mo/Al sub 2 O sub 3 ). (ERA citation 02:006453)