Selective catalytic reduction of nitric oxide over cerium-doped activated carbons

Selective catalytic reduction of nitric oxide by methane over cerium and silver ion-exchanged ZSM-5 zeolites

A new catalyst comprising cerium and silver ion-exchanged ZSM-5 zeolite is reported in this paper, for the reduction of nitric oxide by methane in the presence of excess oxygen. The bi-cation exchanged Ce-Ag-ZSM-5 catalyst was very active for this reaction, while either Ce-ZSM-5 or Ag-ZSM-5 alone showed low activity. The presence of oxygen in the feed gas mixture enhanced the activity of the ca...

Selective catalytic reduction of sulfur dioxide by carbon monoxide over iron oxide supported on activated carbon

The selective reduction of sulfur dioxide with carbon monoxide to elemental sulfur was studied over ACsupported transition-metal oxide catalysts. According to the study, Fe2O3 /AC was the most active catalyst among the 4 AC-supported catalysts tested. By using Fe2O3 /AC, the best catalyst, when the feed conditions were properly optimized (CO/SO2 molar ratio = 2:1; sulfidation temperature, 400 ◦...

Simple Kinetic Modeling of Selective Reduction of Nitric Oxide in Diesel Exhaust Over Cu-Zn/ZSM-5 Monolithic Catalyst

Communication: Towards catalytic nitric oxide reduction via oligomerization on boron doped graphene.

We use density functional theory to describe a novel way for metal free catalytic reduction of nitric oxide NO utilizing borondopedgraphene. The present study is based on the observation that borondopedgraphene and O-N=N-O(-) act as Lewis acid-base pair allowing the graphene surface to act as a catalyst. The process implies electron assisted N=N bond formation prior to N-O dissociation. Two N2 ...

Catalytic reduction of nitric oxide by carbon monoxide.

The reduction of nitric oxide by carbon monoxide, reaction (l), mediated by metal complexes has attracted great attention recently due to its relevance to the control of air pollution and the intrinsic interest in the mechanism of N20 and C02 formation. 1-7 While a number of catalyst systems for reaction (1) have been reported, only the RhIILRhI and the PdC12CuCI2. systems rapidly catalyse the ...