Influence of a hydrocarbon, C{sub}3H{sub}6 or C{sub}3H{sub}8, on the reduction of NO by CO in the absence and in the presence of O{sub}2, with a Pd/Al{sub}2O{sub}3 catalyst

摘要

The introduction of hydrocarbons inhibits the catalytic reduction of NO by CO in the presence and in the absence of O{sub}2. This inhibition effect has been explained either by carbon poisoning of the active metal when the CO-NO reaction iscarried Out without oxygen (or with moderate amounts of O{sub}2) or by oxygen poisoning in the presence of high oxygen amounts.