Ruthenium promoted hydrodenitrogenation catalysts

The promotion of a commercial CoMo hydrotreating catalyst with an active amine transalkylation catalyst, Ru3(CO)12, was investigated. The resulting catalyst, RuCoMo, exhibited enhanced HDN activity on quinoline and gave a 5-fold increase in selectivity to aromatic hydrocarbon products. Unlike bulk ruthenium, the ruthenium promoted catalyst was sulfur tolerant.