Novel Fe-doped CePO catalyst for selective catalytic reduction of NO with NH: The role of Fe ions.

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ID: 51600
2019
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Abstract
Novel Fe-doped CePO (FeCe) catalyst was firstly successfully synthesized via a simple co-precipitation method and demonstrated excellent NH-SCR performance in comparison with FePO and CePO. In order to study the promoting effects of Fe ion on the NH-SCR activity of CePO catalyst, various characterizations were conducted. It was found that NH capacity of FeCe catalyst was controlled by P sites and depended on their specific surface area. Interestingly, Fe species in FeCe were not a Lewis acid site for NH adsorption, but it could promote the activation of NH. More importantly, Fe doping could induce the redox equilibrium of Fe + Ce ⇆ Fe + Ce, which significantly improved redox properties of CePO catalyst. Accordingly, improved catalytic activity of FeCe catalysts could be attributed to the collective effects of the higher surface area, better redox properties and easily activated NH. Among them, superior redox property of FeCe catalysts was the main reason boosting their high catalytic activity. Finally, the reaction process analyzed by in situ DRIFT proposed that the NH-SCR reaction over CePO and FeCe occurred mainly via Eley-Rideal mechanism. We anticipated this work could promote the development of novel NH-SCR catalyst.
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zeng2019noveljournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zeng, Yiqing;Song, Wang;Wang, Yanan;Zhang, Shule;Wang, Tianxiao;Zhong, Qin;
Journal Journal of hazardous materials
Year 2019
DOI
S0304-3894(19)31166-5
URL
Keywords
acid sites cepo(4) fe doped nh(3)-scr redox property

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