Hydrodenitrogenation of benzo(f)quinoline and benzo(h)quinoline over a sulfided NiO-MoO sub 3 /. gamma. -Al sub 2 O sub 3 catalyst

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(88)90155-8· OSTI ID:6583735

Moreau, C; Durand, R; Zmimita, N; Geneste, P ^[1]

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1. Ecole Nationale Superieure de Chimie de Montpellier (France)

The hydroprocessing of benzo(f)quinoline and benzo(h)quinoline was studied by a batch method at 340{degree}C and 70 bar H{sub 2} over a commercial sulfide NiO-MoO{sub 3}/{gamma}-Al{sub 2}O{sub 3} catalyst. The hydrogenation of the N ring occurs at similar rates for the two isomeric benzoquinolines but is slower than the hydrogenation of the N ring of quinoline. On the other hand, an important and unusual percentage of C{sub sp{sup 2}}-N bond cleavage is observed from the two intermediates 1,2,3,4-tetrahydrobenzo(f)quinoline and 1,2,3,4-tetrahydrobenzo(h)quinoline. These two main reactions, hydrogenation of N rings and cleavage of C-N bonds, are then discussed in terms of aromaticity; a decrease in aromaticity favors both the hydrogenation of N rings and the cleavage of C{sub sp{sup 2}}-N bonds.

• OSTI ID: 6583735
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 112:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

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