The influence of mixing between NH3 and NO for a De-NOx reaction in the SNCR process

A high effective adsorbent of NOx: Preparation, characterization and performance of Ca-beta zeolites

“…Therefore, great efforts have been made to an efficient elimination of NOx in recent years. Up to now, the disposed methods to eliminate NOx mainly involve catalytic decomposition [3][4][5], selective non-catalytic reduction (SNCR) [6][7][8], selective catalytic reduction (SCR) [9,10], NOx storage reduction (NSR) [11] and adsorption [12,13]. As the approach of NOx adsorption at low temperature has the advantages of high efficiency, simple equipment, simple operation and easy automata [14][15][16], it can be adopted to deal with the gases including NOx with large space velocity and low concentrations; After the saturation adsorption of NOx is reached, NOx adsorbed will be desorbed and further decomposed or reduced at higher temperature.…”

The optimal volume of a combined system of LNT and SCR catalysts

“…Based on three-way catalysts technology for gasoline engines, LNT has emerged as a solution to reduce NOx in lean-burn gasoline engine exhaust gas. Since diesel engines operate only under lean conditions, the NOx emitted under these conditions have to be adsorbed on the adsorbent (Ba, K) [2,7] before being reduced by the reductants (CO, HC, H 2 ) that are generated during the short-rich operations of the engines [8][9][10]. Several groups of engineers have already evaluated the performance of a combined system of LNT + SCR with light-duty diesel engines [11][12][13][14][15].…”

Effect of mixing on NO removal in the selective noncatalytic reduction reaction process

“…This was probably the result of the accelerated reaction of NH 3 at the same temperature due to mixing caused by the injection. 21 …”