The catalytic reduction of nitric oxide in automobile exhause gases--I. Tests of iron-containing materials.
Abstract The efficiencies of iron-containing catalysts for the reduction of nitric oxide in simulated and real exhaust gases are reported. The catalyst bed was seven times the swept volume of the engine. The best results were obtained when the engines were run about 10 per cent rich of stoicheiometric. The rate at which the catalyst was poisoned by conventional fuel additives was shown to be reduced by raising the working temperature of the reactor.
On the Catalytic Reduction of Nitric Oxide in the Presence of Oxygen
The reduction of NO by H2 and CO was studied over a number of Pd, Ag, and Fe mixed catalysts supported on y-alumina with and without the addition of oxygen. Ag/Fe—AI2O3 is more active for the reduction of NO by H2 at low CO concentrations than the single components Ag and Fe. The three-component catalyst Pd/Ag/Fe has a remarkable selectivity for the NO reduction by H2 and CO even at O2 concentrations of 2°/o at the inlet. Both effects are attributed to a possible adlineation of NO on iron and silver phase boundaries. Carbon monoxide blocks considerably the reduction by H2 over Pd and Pt catalysts up to about 350 °C.
Kidney and urinary tract diseases in the newborn
Kidney and urinary tract diseases in the newborn / , Kidney and urinary tract diseases in the newborn / , کتابخانه دیجیتال جندی شاپور اهواز