Issue 10, 2019

Development of cerium-based catalysts for selective catalytic reduction of nitrogen oxides: a review

Abstract

Nitrogen oxides (NOX) are major pollutants of the atmosphere, and selective catalytic reduction of nitrogen oxides using ammonia as a reductant (NH3-SCR) is an effective method to remove nitrogen oxides. Numerous catalysts have been studied and used for the elimination of nitrogen oxides. These studies have revealed that cerium-based catalysts provide the advantage of wide operating temperature windows and high catalytic activities in NH3-SCR reactions, and the activity and structure of cerium-based catalysts are related to the preparation methods. In this review, we have summarized the development of cerium-based composite catalysts and elaborated on the performance, mechanism, and synthesis methods of cerium-based catalysts for NH3-SCR reactions. The purpose of this review was to highlight (1) the influence of the preparation method on the structure and catalytic performance of ceria-based catalysts; (2) the reaction mechanism of NH3-SCR deNOX over cerium-based catalysts; and (3) the design strategies of catalysts to achieve wide operating temperature windows and high catalytic activities in NH3-SCR deNOX reactions.

Graphical abstract: Development of cerium-based catalysts for selective catalytic reduction of nitrogen oxides: a review

Article information

Article type
Perspective
Submitted
25 Okt 2018
Accepted
31 Jan 2019
First published
01 Feb 2019

New J. Chem., 2019,43, 3996-4007

Development of cerium-based catalysts for selective catalytic reduction of nitrogen oxides: a review

J. Xu, H. Yu, C. Zhang, F. Guo and J. Xie, New J. Chem., 2019, 43, 3996 DOI: 10.1039/C8NJ05420G

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