The significance of the selective catalytic reduction system in vehicles increases line with high standards emission control and enhanced efficiency. This study aims to improve performance through an optimization method using a metamodel. objective function is defined as ammonia uniformity index, design parameters are relation pipe length mixer related chemical reaction urea solution. range has...

Reactivity of V2O5 Catalysts for the Selective Catalytic Reduction of NO by NH3: Influence of Vanadia Loading, H2O, and SO2 Michael D. Amiridis,∗,1 Israel E. Wachs,† Goutam Deo,† Jih-Mirn Jehng,† and Du Soung Kim† ∗Research Division, W.R. Grace & Co.-Conn., Columbia, Maryland 21044; and †Zettlemoyer Center for Surface Studies and Department of Chemical Engineering, Lehigh University, Bethlehem,...

This paper presents a control strategy for an automotive selective catalytic reduction (SCR) system, for which the feedback is based on a NOx sensor measurement. This NOx sensor is cross-sensitive to NH3, which is critical for control purposes: a study of the closed-loop dynamics is performed which permits to calibrate the control strategy. Experimental results illustrate the performance of the...

The selective synthesis of the [Rh5(CO)15](-) cluster within the PPI dendrimer was successfully demonstrated. The dendrimer-encapsulated [Rh5(CO)15](-) was resistant to decomposition under the catalytic reaction conditions and exhibited extremely high selectivity for the chemoselective reduction of nitro groups of various nitro aromatics with other reducible groups using CO/H2O as a reductant.