The effect of Ce on a high-efficiency CeO2/WO3–TiO2 catalyst for the selective catalytic reduction of NOx with NH3. Issue 69 (8th July 2016)

• Record Type: Journal Article
• Authors: Geng, Yang; Huang, Haili; Chen, Xiaoling; Ding, Hongyu; Yang, Shijian; Liu, Fudong; Shan, Wenpo
• Is Part Of: RSC advances. Volume 6:Issue 69(2016)
• Page Start: 64803
• Page End: 64810
• Publication Date: 2016-07-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra06392f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Characterizations were used to investigate the effect of Ce on a high-efficiency CeO2 /WO3 –TiO2 catalyst for the selective catalytic reduction of NO x with NH3 . Abstract : In this study, W0.1 TiO x and Ce a W0.1 TiO x ( a = 0.1, 0.2, 0.5, 1.0) catalysts were prepared by a novel stepwise precipitation approach. The Ce a W0.1 TiO x catalysts showed much better activities and N2 selectivity than W0.1 TiO x . Particularly, the Ce0.2 W0.1 TiO x (CeO2 /WO3 –TiO2 ) catalyst showed excellent catalytic performance in a broad temperature range from 200 to 450 °C, under a high GHSV condition of 400 000 h −1 . Characterizations revealed that the novel preparation approach can achieve highly dispersed Ce species on the surface of the catalyst, and the Ce species could induce enhanced charge imbalance, superior redox functions, and outstanding adsorption and activation properties for NO x and NH3, which is the main reason for the highly efficient NO x abatement capability of the CeO2 /WO3 –TiO2 catalyst.