Superior activity of iron-manganese supported on kaolin for NO abatement at low temperature

Wang, Xiaobo, Zhou, Jie, Zhao, Tong, Gui, Keting, Wang, Jia and Thomas, Hywel R. ORCID: https://orcid.org/0000-0002-3951-0409 2020. Superior activity of iron-manganese supported on kaolin for NO abatement at low temperature. Journal of Environmental Sciences 88 , pp. 237-247. 10.1016/j.jes.2019.08.017

Full text not available from this repository.

Abstract

A series of Fe–Mn catalysts was prepared using different supports (kaolin, diatomite, and alumina) and used for NO abatement via low-temperature NH3-selective catalytic reduction (SCR). The results showed that 12Fe–10Mn/Kaolin (with the concentration of Fe and Mn 12 and 10 wt.%, respectively) exhibited the highest activity, and more than 95.8% NO conversion could be obtained within the wide temperature range of 120–300°C. The properties of the catalysts were characterized by inductively coupled plasma-atomic emission spectrometry (ICP-AES), thermogravimetry (TG), Brunner–Emmet–Teller (BET) measurements, X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), NH3-temperature programmed desorption (NH3-TPD), X-ray photoelectron spectroscopy (XPS), scanning electron microprobe (SEM) and energy dispersive spectroscopy (EDS) techniques. The support effects resulted in significant differences in the components and structures of catalysts. The 12Fe–10Mn/Kaolin catalyst exhibited better dispersion of active species, optimum low-temperature reduction behavior, the largest amount of normalized Brønsted acid sites, and the highest Mn4+/Mn and Fe3+/(Fe3+ + Fe2+), all of which may be major reasons for its superior catalytic activity.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	1001-0742
Date of Acceptance:	29 August 2019
Last Modified:	26 Oct 2022 08:47
URI:	https://orca.cardiff.ac.uk/id/eprint/128327

Citation Data

Cited 3 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item