The reduction of NO by CO over a powdered $${\text {Pt/Al}_{2}}\text {O}_3$$ catalyst in flow reactors is investigated as a function of temperature and stoichiometry at low concentrations typical for emission control. The study investigates the initial decline in conversion over pre-reduced catalysts and its correlation with the formation (and decomposition) of isocyanate (–NCO) on the support, tracked by time-resolved operand...

High engine efficiency, comparably low pollutant emissions, and advantageous carbon dioxide emissions make lean-burn natural gas engines an attractive alternative compared to conventional diesel or gasoline engines. However, incomplete combustion in natural gas engines results in emission of small amounts of methane, which has a strong global warming potential and consequently makes an efficient exhaust gas aftertreatment syst...