Role of nitrogen-containing organic compound in plasma exhaust treatment

Abstract

Role of nitrogen-containing organic compounds produced during the plasma process on the subsequent of C 2 H 4 -SCR of NO x over Ag/γ-Al 2 O 3 catalyst at 523 K was studied in a two-stage plasma-facilitated catalysis system. Results showed that nitrogen-containing organic compounds (methyl nitrate, ethyl nitrate, nitro methyl) produced in the plasma reactor can improve the subsequent catalytic performance at lower temperature besides NO 2 and aldehyde; more the amounts of nitrogen-containing organic compounds produced after plasma pretreatment, more the amounts of N 2 produced in the subsequent catalysis process, and N 2 selectivity leveled at about 82%.