Recent Progress of CeO2-TiO2 Based Catalysts for Selective Catalytic Reduction of NOx by NH3

Selective catalytic reduction of NOx with NH3 (NH3-SCR) is one of the widely used process to abate NOx emission from both stationary and mobile sources. Recently, CeO2-TiO2 based NH3-SCR catalysts due to their excellent medium and high temperature activities, high N-2 selectivity and environmentally friendly, have attracted much attention as great candidate to replace the commercial VOx-TiO2 based NH3-SCR catalysts. During the past years, extensive works have been done to achieve the industrial commercialization of CeO2-TiO2 based NH3-SCR catalyst. In this review, we summarize the recent studies on the mechanism, deactivation, preparation and modification of CeO2-TiO2 catalyst. The focus of this review is the modification strategies on improving the catalytic performance of CeO2-TiO2 catalyst. By comparing the effect of different modification strategies on the catalytic performance of CeO2-TiO2 catalyst, the perspectives and challenges of CeO2-TiO2 based catalyst for NH3-SCR of NOx are discussed.

Automated summary

NH3-SCR is an important method to reduce NOx emissions, with CeO2-TiO2 catalysts gaining attention for their excellent performance. This review summarizes recent studies on CeO2-TiO2 catalysts, focusing on the impact of modification strategies on catalytic performance.