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Arabian Journal for Science and Engineering
Erschienen in: Arabian Journal for Science and Engineering 6/2019

24.04.2019 | Research Article - Chemical Engineering

Quantum Chemical Study on the Reaction Mechanism of Fast SCR Catalyzed by ZSM-5 Doped with Mn/Co–Al/Ce

verfasst von: Zhengcheng Wen, Shengji Li, Heping Li, Yuan Li, Guangqin Wang

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 6/2019

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Abstract

Fast selective catalytic reduction (SCR) is regarded as a good choice to improve the SCR denitrification efficiency and reduce the using of catalyst. For a good understanding and further improvement, the investigation on the mechanism of SCR and fast SCR is essential. A four-step catalytic mechanism for SCR and fast SCR catalyzed by ZSM5 doped with Mn/Co–Al/Ce is proposed in this paper, and the catalytic mechanism is studied in detail by using the method of quantum chemistry. Results show that, by using ZSM5–Mn/Co catalyst, the activation energy of fast SCR (83.35/87.55 kJ/mol) is much lower than that of SCR (154.98/219.70 kJ/mol). This indicates that fast SCR has a better catalytic effect and higher denitration efficiency. Moreover, when Al/Ce is added into ZSM5–Mn/Co, the active center Si is replaced by Al/Ce, and the activation energy of fast SCR is further decreased to about 40–60 kJ/mol. This shows that the catalysts for SCR and fast SCR not only relate to the supported transition metal such as Co and Mn, but also highly relate to the activity center such as Al and Ce.
Vorheriger Artikel RSM and Crow Search Algorithm-Based Optimization of Ultrasonicated Transesterification Process Parameters on Synthesis of Polyol Ester-Based Biolubricant
Nächster Artikel Electrophoretic Deposition of Graphene Oxide Nanosheets on Copper Pipe for Corrosion Protection

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Metadaten
Titel
Quantum Chemical Study on the Reaction Mechanism of Fast SCR Catalyzed by ZSM-5 Doped with Mn/Co–Al/Ce
verfasst von
Zhengcheng Wen
Shengji Li
Heping Li
Yuan Li
Guangqin Wang
Publikationsdatum
24.04.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Arabian Journal for Science and Engineering / Ausgabe 6/2019
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-019-03856-0

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