Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas
Pristine CeO2 is not active for the selective catalytic reduction of NOx with NH3 (NH3-SCR) and the SCR activity is nearly totally lost due to the introduction of K. However, sulfation treatment of CeO2 leads to significantly improved SCR activity and remarkable resistance towards K poisoning. In-si...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Catalysis Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S156673672030306X |
| _version_ | 1818619757838991360 |
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| author | Zizheng Zhou Jianmin Lan Lingyi Liu Zhiming Liu |
| author_facet | Zizheng Zhou Jianmin Lan Lingyi Liu Zhiming Liu |
| author_sort | Zizheng Zhou |
| collection | DOAJ |
| description | Pristine CeO2 is not active for the selective catalytic reduction of NOx with NH3 (NH3-SCR) and the SCR activity is nearly totally lost due to the introduction of K. However, sulfation treatment of CeO2 leads to significantly improved SCR activity and remarkable resistance towards K poisoning. In-situ DRIFTS results revealed that the addition of K seldom affects the adsorption of NH3 over sulfated CeO2, whereas the adsorption of NH3 becomes very weak in the case of K-doped CeO2. The noticeably improved Brønsted acid sites due to the sulfation are responsible for the enhanced alkali resistance of sulfated CeO2 catalyst. |
| first_indexed | 2024-12-16T17:42:34Z |
| format | Article |
| id | doaj.art-e839ba862bae43bd8a0211a88266ae43 |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-12-16T17:42:34Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-e839ba862bae43bd8a0211a88266ae432022-12-21T22:22:34ZengElsevierCatalysis Communications1873-39052021-01-01149106230Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gasZizheng Zhou0Jianmin Lan1Lingyi Liu2Zhiming Liu3State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, ChinaCollege of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China; Corresponding author at: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.Pristine CeO2 is not active for the selective catalytic reduction of NOx with NH3 (NH3-SCR) and the SCR activity is nearly totally lost due to the introduction of K. However, sulfation treatment of CeO2 leads to significantly improved SCR activity and remarkable resistance towards K poisoning. In-situ DRIFTS results revealed that the addition of K seldom affects the adsorption of NH3 over sulfated CeO2, whereas the adsorption of NH3 becomes very weak in the case of K-doped CeO2. The noticeably improved Brønsted acid sites due to the sulfation are responsible for the enhanced alkali resistance of sulfated CeO2 catalyst.http://www.sciencedirect.com/science/article/pii/S156673672030306XNH3-SCRSulfated CeO2Alkali resistanceNitrogen oxides |
| spellingShingle | Zizheng Zhou Jianmin Lan Lingyi Liu Zhiming Liu Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas Catalysis Communications NH3-SCR Sulfated CeO2 Alkali resistance Nitrogen oxides |
| title | Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas |
| title_full | Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas |
| title_fullStr | Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas |
| title_full_unstemmed | Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas |
| title_short | Enhanced alkali resistance of sulfated CeO2 catalyst for the reduction of NOx from biomass fired flue gas |
| title_sort | enhanced alkali resistance of sulfated ceo2 catalyst for the reduction of nox from biomass fired flue gas |
| topic | NH3-SCR Sulfated CeO2 Alkali resistance Nitrogen oxides |
| url | http://www.sciencedirect.com/science/article/pii/S156673672030306X |
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