A novel Ce–Sb binary oxide catalyst for the selective catalytic reduction of NO_x with NH₃

Abstract

The synergetic effect between Sb and Ce not only increases the surface acidity of the catalyst but also enhances the redox property, both of which contribute to improving NH3-SCR activity.

Role of silicotungstic acid on the catalytic performance over CeO2‐HSiW catalysts for selective catalytic reduction of NOx with NH3

“…In addition, the intensity of peaks at 1433 cm −1 and 1592 cm −1 were gradually improving, which demonstrated that bridged nitrate and NH 4 + was the reaction of intermediate. Obviously, the peaks at 1668, 1592, 1433, and 1189 cm −1 appeared over the catalysts, [ 44,45 ] indicating the reaction between NH 3 ad‐species and NO x ad‐species might take place on the CeO 2 ‐Si‐W and Si‐W/CeO 2 .…”

Conventional and New Materials for Selective Catalytic Reduction (SCR) of NOx

“…Novel Fe‐Ce‐Ti oxide catalysts and Ce‐Sb oxide catalysts have been prepared and well‐studied by Liu's research group –. Owing to the synergetic effect of Fe and Ce or Sb and Ce, both CeFeO x , Fe 0.2 Ce 0.2 Ti 0.6 and Sb 1 Ce 4 displayed not only a higher NO x removal efficiency and N 2 selectivity in a wide temperature range but also high anti‐SO 2 and H 2 O performance…”

The effective promotion of trace amount of Cu on Ce/WO3‐ZrO2‐TiO2 monolithic catalyst for the low‐temperature NH3‐SCR of NOx

“…CeO 2 has attracted increasing attention because of its advantages of high oxygen storage capacity and excellent redox properties via the shifting between Ce 4+ and Ce 3+ . Therefore, various studies have been conducted to develop SCR catalysts using ceria . In addition, Cu is also reported to play a vital role in boosting the low temperature activity for the NH 3 ‐SCR .…”