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N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)

In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts...

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Autores principales: Li, Peng, Li, Zhifang, Cui, Jinxing, Geng, Cui, Kang, Yan, Zhang, Chao, Yang, Changlong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064319/
https://www.ncbi.nlm.nih.gov/pubmed/35521390
http://dx.doi.org/10.1039/c9ra02456e
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author Li, Peng
Li, Zhifang
Cui, Jinxing
Geng, Cui
Kang, Yan
Zhang, Chao
Yang, Changlong
author_facet Li, Peng
Li, Zhifang
Cui, Jinxing
Geng, Cui
Kang, Yan
Zhang, Chao
Yang, Changlong
author_sort Li, Peng
collection PubMed
description In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts exhibited the best denitrification activity when the loading was at 4% and the conversion rate of NO(x) reached 99% at 250–300 °C. CoFe(2)O(4)/graphene-(N) catalysts presented a better denitrification activity at low temperature than CoFe(2)O(4)/graphene catalysts, and the conversion rate of NO(x) reached more than 95% at 200–300 °C. The intrinsic mechanism of CoFe(2)O(4)/graphene-(N) catalysts in promoting SCR activity was preliminarily explored. The physicochemical properties of the samples were characterized using XRD, TEM, N(2) adsorption, XPS, NH(3)-TPD, and H(2)-TPR. The results indicated that nitrogen doping can improve the dispersion of CoFe(2)O(4), and it also increased the acidic sites and the redox performance conducive to improving the denitrification activity of the catalysts. In addition, CoFe(2)O(4)/graphene-(N) catalysts demonstrated a better resistance to water and sulfur than CoFe(2)O(4)/graphene catalysts.
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spelling pubmed-90643192022-05-04 N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) Li, Peng Li, Zhifang Cui, Jinxing Geng, Cui Kang, Yan Zhang, Chao Yang, Changlong RSC Adv Chemistry In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts exhibited the best denitrification activity when the loading was at 4% and the conversion rate of NO(x) reached 99% at 250–300 °C. CoFe(2)O(4)/graphene-(N) catalysts presented a better denitrification activity at low temperature than CoFe(2)O(4)/graphene catalysts, and the conversion rate of NO(x) reached more than 95% at 200–300 °C. The intrinsic mechanism of CoFe(2)O(4)/graphene-(N) catalysts in promoting SCR activity was preliminarily explored. The physicochemical properties of the samples were characterized using XRD, TEM, N(2) adsorption, XPS, NH(3)-TPD, and H(2)-TPR. The results indicated that nitrogen doping can improve the dispersion of CoFe(2)O(4), and it also increased the acidic sites and the redox performance conducive to improving the denitrification activity of the catalysts. In addition, CoFe(2)O(4)/graphene-(N) catalysts demonstrated a better resistance to water and sulfur than CoFe(2)O(4)/graphene catalysts. The Royal Society of Chemistry 2019-05-21 /pmc/articles/PMC9064319/ /pubmed/35521390 http://dx.doi.org/10.1039/c9ra02456e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Li, Peng
Li, Zhifang
Cui, Jinxing
Geng, Cui
Kang, Yan
Zhang, Chao
Yang, Changlong
N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title_full N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title_fullStr N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title_full_unstemmed N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title_short N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
title_sort n-doped graphene/cofe(2)o(4) catalysts for the selective catalytic reduction of no(x) by nh(3)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064319/
https://www.ncbi.nlm.nih.gov/pubmed/35521390
http://dx.doi.org/10.1039/c9ra02456e
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