Ce_1-xMn_xVO₄ with Improved Activity for Low-Temperature Catalytic Reduction of NO with NH₃.

IF 3.5 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - An Asian Journal Pub Date : 2025-01-27 DOI:10.1002/asia.202401341

Li Wang, Jun-Bo Wang, He-Ping Cheng, Hui Xu, Shi-Ni Wu, Fei Huang, Long Chen, Zhen Ma

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引用次数: 0

Abstract

Novel Ce_1-xMn_xVO₄ catalysts prepared via modified hydrothermal synthesis were used in selective catalytic reduction of NO using NH₃ (NH₃-SCR). The Ce_1-xMn_xVO₄ catalysts displayed optimum NO removal efficiency at 250 °C. Physicochemical properties including crystal type, morphology, particle size, elemental composition, BET surface area, chemical bond, and valence state were studied by XRD, TEM, EDS, N₂ adsorption-desorption, Raman spectroscopy, and XPS. Specific properties such as reduction property and acid sites were studied by H₂-TPR and NH₃-TPD. The in-situ DRIFTS results revealed that NH₃-SCR over Ce_0.5Mn_0.5VO₄ follows the Eley-Rideal mechanism. The experimental results showed that doped manganese replaces the Ce position in CeVO₄. The Mn-O-Ce interaction may increase the contents of oxygen defects and Brønsted acid sites, thus leading to enhanced activity.

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来源期刊

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).