Direct catalytic decomposition of NO over bismuth modified NiO catalysts.

Direct catalytic decomposition is a promising technology to control the emission of nitrous oxide (NO) during fossil fuel combustion and various chemical industries. In this study, a series of NiO catalysts modified with different metal oxides (MNiO) were prepared by the co-precipitation method and employed for the direct catalytic decomposition of NO. Bismuth (Bi) species was confirmed to be the most optimal promoter and the BiNiO catalyst with a Bi/Ni molar ratio of 0.