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Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia
A series of CeO(2)–WO(3)/SiO(2)–TiO(2) (CeW(x)TiSi(y)) catalysts with different loading amounts of WO(3) were synthesized by wet co-impregnation of ammonium metatungstate and cerium nitrate on a SiO(2)–TiO(2) support, and were employed for the selective catalytic reduction (SCR) of NO by NH(3). The...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9049223/ https://www.ncbi.nlm.nih.gov/pubmed/35497452 http://dx.doi.org/10.1039/d0ra00053a |
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author | Fan, Rongrong Li, Zhaoqiang Wang, Yan Zhang, Cheng Wang, Yu Ding, Zhiyong Guo, Xin Wang, Rong |
author_facet | Fan, Rongrong Li, Zhaoqiang Wang, Yan Zhang, Cheng Wang, Yu Ding, Zhiyong Guo, Xin Wang, Rong |
author_sort | Fan, Rongrong |
collection | PubMed |
description | A series of CeO(2)–WO(3)/SiO(2)–TiO(2) (CeW(x)TiSi(y)) catalysts with different loading amounts of WO(3) were synthesized by wet co-impregnation of ammonium metatungstate and cerium nitrate on a SiO(2)–TiO(2) support, and were employed for the selective catalytic reduction (SCR) of NO by NH(3). The catalytic activity of the CeO(2)/SiO(2)–TiO(2) (CeSiTi) catalyst was enhanced by the addition of WO(3), and the W-containing catalysts showed higher hydrothermal stability especially between 550 and 600 °C. The introduction of WO(3) to the CeSiTi catalyst could produce more chemisorbed oxygen species, reducible subsurface oxygen species, acid sites and ad-NO(x) species. Moreover, the modification of CeO(2)–WO(3)/TiO(2) (CeWTi) by SiO(2) could enhance the specific surface area, especially the aged specific surface area, thus improving the hydrothermal stability of the catalyst. |
format | Online Article Text |
id | pubmed-9049223 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90492232022-04-29 Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia Fan, Rongrong Li, Zhaoqiang Wang, Yan Zhang, Cheng Wang, Yu Ding, Zhiyong Guo, Xin Wang, Rong RSC Adv Chemistry A series of CeO(2)–WO(3)/SiO(2)–TiO(2) (CeW(x)TiSi(y)) catalysts with different loading amounts of WO(3) were synthesized by wet co-impregnation of ammonium metatungstate and cerium nitrate on a SiO(2)–TiO(2) support, and were employed for the selective catalytic reduction (SCR) of NO by NH(3). The catalytic activity of the CeO(2)/SiO(2)–TiO(2) (CeSiTi) catalyst was enhanced by the addition of WO(3), and the W-containing catalysts showed higher hydrothermal stability especially between 550 and 600 °C. The introduction of WO(3) to the CeSiTi catalyst could produce more chemisorbed oxygen species, reducible subsurface oxygen species, acid sites and ad-NO(x) species. Moreover, the modification of CeO(2)–WO(3)/TiO(2) (CeWTi) by SiO(2) could enhance the specific surface area, especially the aged specific surface area, thus improving the hydrothermal stability of the catalyst. The Royal Society of Chemistry 2020-02-05 /pmc/articles/PMC9049223/ /pubmed/35497452 http://dx.doi.org/10.1039/d0ra00053a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Fan, Rongrong Li, Zhaoqiang Wang, Yan Zhang, Cheng Wang, Yu Ding, Zhiyong Guo, Xin Wang, Rong Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title | Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title_full | Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title_fullStr | Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title_full_unstemmed | Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title_short | Effects of WO(3) and SiO(2) doping on CeO(2)–TiO(2) catalysts for selective catalytic reduction of NO with ammonia |
title_sort | effects of wo(3) and sio(2) doping on ceo(2)–tio(2) catalysts for selective catalytic reduction of no with ammonia |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9049223/ https://www.ncbi.nlm.nih.gov/pubmed/35497452 http://dx.doi.org/10.1039/d0ra00053a |
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