Reduction of NO with the carbon nanofibers formed by methane decomposition Original Research Article

Reduction of NO with the carbon nanofibers (CNF) formed by methane decomposition over various Ni–M/SiO2, where M is a different metal added, has been investigated. The CNF formed on Ni–Cu/SiO2 catalyst was most favorable for enhancing the reduction of NO. The metal species (Ni, Co, Pt, Pd or Cu) contained in CNF did not catalyze the reaction between NO and CNF in the presence of oxygen. The reducing ability of CNF for NO depended strongly on the specific surface area and the degree of graphitization of CNF.