Journal
ACS CATALYSIS
Volume 6, Issue 3, Pages 1455-1476Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b02286
Keywords
hydrodenitrogenation; C-N bond cleavage; hydrotreating; petroleum refining; organometallic models
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Funding
- ACS Petroleum Research Fund
- DOE Office of Basic Sciences [SC-0006718, 86ER1311]
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The cleavage of recalcitrant C-N linkages in heteroaromatic molecules is a critical component of hydro-denitrogenation (HDN) reactions, the processes by which N atoms are removed from crude fuels. C-N bond cleavage of heteroaromatics with traditional HDN catalysts such as sulfided Ni/Mo-Al2O3 and Ni/W-Al2O3 requires aggressive conditions to hydrogenate the heterocyclic rings and often unnecessarily saturates the carbocyclic rings as part of the C-N cleavage process. In contrast, small-molecule models have illustrated selective hydrogenation of the heterocyclic ring, providing mechanistic insight into HDN processes and inspiring the design of new, more selective HDN catalysts.
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