Effect of synthesis methods on Fe-Ce/Ti catalysts for selective catalytic reduction: the physicochemical properties and catalytic activity

Wang, Xiaobo, Fang, Qiuyue, He, Xuan, Wang, Jia, Gui, Keting and Thomas, Hywel Rhys ORCID: https://orcid.org/0000-0002-3951-0409 2021. Effect of synthesis methods on Fe-Ce/Ti catalysts for selective catalytic reduction: the physicochemical properties and catalytic activity. Reaction Kinetics, Mechanisms and Catalysis 132 , pp. 331-345. 10.1007/s11144-020-01905-6

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Abstract

The Fe–Ce/Ti catalysts with different molar ratios of Fe and Ce were synthesized by the precipitation method and impregnation method and used for the SCR reaction. BET, XRD, NH3-TPD, XPS, H2-TPR, UV–Vis, TEM, SEM–EDS mapping techniques were performed to explore the physicochemical properties of catalysts synthesized by different methods. As a result, the catalysts synthesized by precipitation method yields higher catalytic activity than that of the catalysts prepared by the impregnation method. The precipitated catalysts possess larger specific surface areas, higher ratios of Ce3+/Ce4+ and Fe3+/Fe2+ and more surface chemisorbed oxygen, as well as the enhanced surface acid sites and redox ability. Besides these, it holds a high dispersion of active species and more uniform smaller nanoparticles. All mentioned above will result in a higher catalytic performance of catalysts.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Springer Verlag (Germany) / Akadémiai Kiadó
ISSN:	1878-5190
Date of Acceptance:	13 November 2020
Last Modified:	05 Nov 2022 03:56
URI:	https://orca.cardiff.ac.uk/id/eprint/136897

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