CeO 2 supported MOFs derived LaB x Fe y O 3 (B=Mn, Co) perovskite catalysts for degradation of toluene.

Autor: Qi S; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Tao Y; Center of Information Development and Management, Changzhou University, Changzhou, City, 213164, People's Republic of China., Jiang S; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Chen B; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Su Z; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Chen K; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Wang J; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China., Luo S; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China. shiping_luo@163.com., Xie A; School of Petrochemical Engineering, Changzhou University, Changzhou, City, 213164, People's Republic of China.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Mar; Vol. 30 (15), pp. 45414-45427. Date of Electronic Publication: 2023 Jan 27.
DOI: 10.1007/s11356-023-25610-8
Abstrakt: In this work, LaCoO 3 and LaMnO 3 perovskites with the higher specific surface area were synthesized using MOFs as precursor, then, the composite catalysts CeO 2 -LaCo x Fe y O 3 and CeO 2 -LaMn x Fe y O 3 were prepared by using CeO 2 as support and Fe element doping LaCoO 3 and LaMnO 3 , respectively. The as-prepared samples were characterized by XRD, SEM, XPS, H 2 -TPR, and N 2 physisorption techniques. Subsequently, toluene was used as the probe molecule for volatile organic compounds (VOCs) to test the catalytic activity of these as-prepared catalysts. The results show that the initial reaction temperature for toluene oxidation on supported perovskite catalysts is lower. Among which, CeO 2 -LaCo 0.25 Fe 0.75 O 3 (T 90 =215 °C, T 90 : the temperature corresponding to 90% conversion of toluene) and CeO 2 -LaMn 0.25 Fe 0.75 O 3 (T 90 =205 °C) catalysts show the best catalytic performance. Therefore, the supported perovskite prepared in this study has the advantages of high specific surface area, abundant oxygen vacancies, and excellent oxygen mobility, which makes it exhibit better performance in VOCs catalytic oxidation.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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