The chemical nature of SO<sub>2</sub> poisoning of Cu-CHA-based SCR catalysts for NOx removal in diesel exhausts
Anastasia Yu. Molokova, Davide Salusso, Elisa Borfecchia, Fei Wen, Stefano Magliocco, Silvia Bordiga, Ton V. W. Janssens, Kirill A. Lomachenko, Gloria Berlier
Abstract
Unveiling how the chemistry of the reaction of [Cu 2 II (NH 3 ) 4 O 2 ] 2+ with NO changes upon exposure to SO 2 . The important stage of the NH 3 -SCR cycle in the Cu-CHA deNOx catalyst is investigated with temperature-programmed reaction with NO, XAS and DRIFTS.
Topics & Concepts
CatalysisNOxChemistryDiesel fuelSelective catalytic reductionInorganic chemistryNuclear chemistryOrganic chemistryCombustionCatalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsIndustrial Gas Emission Control