Au-Modified Pd catalyst exhibits improved activity and stability for NO direct decomposition

Abstract

The direct decomposition of NOx at moderate temperatures is a challenge because of the poisoning of the surface of noble metals by oxygen, yet the modification of Pd with Au...

Adsorption of Multiple NO Molecules on Anionic Gold Clusters: Electron Transfer and Disproportionation Enhanced by Molecular Aggregation

“…Nitric oxide (NO) is one of the nitrogen oxides that have been increasingly concentrated in the atmosphere due to the combustion of fossil fuels and emissions from vehicles, posing serious threats to the natural environment (such as photochemical smog, ozone layer depletion, and acid rain) and human health . It is believed that direct reduction of NO to N 2 or selective reduction to NH 3 , urea, as well as other high-value nitrogen-containing chemicals via metal-based catalysts is the most promising method for minimizing adverse environmental impacts from NO. − Aiming to reveal the catalytic mechanisms of metal-based catalysts, studies on the interactions between NO and various microstructures of metal surfaces attract great attention. − In stark contrast to most small molecules with relatively simple adsorption and reaction modes, such as O 2 and CO, the reaction of NO on the metal surface is extremely complicated due to the presence of unpaired electrons and the propensity of self-aggregation, resulting in a vague understanding of the detailed mechanism of the NO adsorption process.…”