Influence of Y Doping on Catalytic Activity of CeO2, MnOx, and CeMnOx Catalysts for Selective Catalytic Reduction of NO by NH3 Научная публикация
| Журнал |
Catalysts
ISSN: 2073-4344 |
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| Вых. Данные | Год: 2023, Том: 13, Номер: 5, Номер статьи : 901, Страниц : 19 DOI: 10.3390/catal13050901 | ||||||||
| Ключевые слова | NO; selective catalytic reduction; manganese oxide; cerium oxide; yttrium | ||||||||
| Авторы |
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| Организации |
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Информация о финансировании (3)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 075-15-2021-1388 (121120100067-7) |
| 2 | Farnesina | MAE01538512021-10-26 |
| 3 | Ministry of Education, Universities and Research | ARS01_00334 |
Реферат:
Novel yttrium-doped CeO2, MnOx, and CeMnOx composites are investigated as catalysts for low-temperature NH3-SCR. The study involves the preparation of unmodified oxide supports using a citrate method followed by modification with Y (2 wt.%) using two approaches, including the one-pot citrate method and incipient wetness impregnation of undoped oxides. The NH3-SCR reaction is studied in a fixed-bed quartz reactor to test the ability of the prepared catalysts in NO reduction. The gas reaction mixture consists of 800 ppm NO, 800 ppm NH3, 10 vol.% O2, and He as a balance gas at a WHSV of 25,000 mL g−1 h−1. The results indicate that undoped CeMnOx mixed oxide exhibits significantly higher deNOx performance compared with undoped and Y-doped MnOx and CeO2 catalysts. Indeed, yttrium presence in CeMnOx promotes the competitive NH3-SCO reaction, reducing the amount of NH3 available for NO reduction and lowering the catalyst activity. Furthermore, the physical-chemical properties of the prepared catalysts are studied using nitrogen adsorption/desorption, XRD, Raman spectroscopy, temperature-programmed reduction with hydrogen, and temperature-programmed desorption of ammonia. This study presents a promising approach to enhancing the performance of NH3-SCR catalysts at low temperatures that can have significant implications for reducing NO emissions.
Библиографическая ссылка:
La Greca E.
, Kharlamova T.S.
, Grabchenko M.V.
, Svetlichnyi V.A.
, Pantaleo G.
, Consentino L.
, Stonkus O.A.
, Vodyankina O.V.
, Liotta L.F.
Influence of Y Doping on Catalytic Activity of CeO2, MnOx, and CeMnOx Catalysts for Selective Catalytic Reduction of NO by NH3
Catalysts. 2023. V.13. N5. 901 :1-19. DOI: 10.3390/catal13050901 WOS Scopus РИНЦ CAPlusCA OpenAlex
Influence of Y Doping on Catalytic Activity of CeO2, MnOx, and CeMnOx Catalysts for Selective Catalytic Reduction of NO by NH3
Catalysts. 2023. V.13. N5. 901 :1-19. DOI: 10.3390/catal13050901 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 5 апр. 2023 г. |
| Принята к публикации: | 14 мая 2023 г. |
| Опубликована в печати: | 17 мая 2023 г. |
| Опубликована online: | 17 мая 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:000998088700001 |
| Scopus: | 2-s2.0-85160703036 |
| РИНЦ: | 54385711 |
| Chemical Abstracts: | 2023:1134824 |
| Chemical Abstracts (print): | 183:132068 |
| OpenAlex: | W4382488043 |