Enhanced Sulfur Tolerance of Ceria-Promoted NOx Storage Reduction (NSR) Catalysts: Sulfur Uptake, Thermal Regeneration and Reduction with H2(g) Научная публикация
| Журнал |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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| Вых. Данные | Год: 2013, Том: 56, Номер: 11, Страницы: 950-957 Страниц : 8 DOI: 10.1007/s11244-013-0059-5 | ||||
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Реферат:
SO x uptake, thermal regeneration and the reduction of SO x via H2(g) over ceria-promoted NSR catalysts were investigated. Sulfur poisoning and desulfation pathways of the complex BaO/Pt/CeO2/Al2O3 NSR system was investigated using a systematic approach where the functional sub-components such as Al2O3, CeO2/Al2O3, BaO/Al2O3, BaO/CeO2/Al2O3, and BaO/Pt/Al2O3 were studied in a comparative fashion. Incorporation of ceria significantly increases the S-uptake of Al2O3 and BaO/Al2O3 under both moderate and extreme S-poisoning conditions. Under moderate S-poisoning conditions, Pt sites seem to be the critical species for SO x oxidation and SO x storage, where BaO/Pt/Al2O3 and BaO/Pt/CeO2/Al2O3 catalysts reveal a comparable extent of sulfation. After extreme S-poisoning due to the deactivation of most of the Pt sites, ceria domains are the main SO x storage sites on the BaO/Pt/CeO2/Al2O3 surface. Thus, under these conditions, BaO/Pt/CeO2/Al2O3 surface stores more sulfur than that of BaO/Pt/Al2O3. BaO/Pt/CeO2/Al2O3 reveals a significantly improved thermal regeneration behavior in vacuum with respect to the conventional BaO/Pt/Al2O3 catalyst. Ceria promotion remarkably enhances the SO x reduction with H2(g).
Библиографическая ссылка:
Say Z.
, Vovk E.I.
, Bukhtiyarov V.I.
, Ozensoy E.
Enhanced Sulfur Tolerance of Ceria-Promoted NOx Storage Reduction (NSR) Catalysts: Sulfur Uptake, Thermal Regeneration and Reduction with H2(g)
Topics in Catalysis. 2013.
V.56. N11. P.950-957. DOI: 10.1007/s11244-013-0059-5
WOS
Scopus
РИНЦ
CAPlusCA
OpenAlex
Sciact
Enhanced Sulfur Tolerance of Ceria-Promoted NOx Storage Reduction (NSR) Catalysts: Sulfur Uptake, Thermal Regeneration and Reduction with H2(g)
Topics in Catalysis. 2013.
V.56. N11. P.950-957. DOI: 10.1007/s11244-013-0059-5
WOS
Scopus
РИНЦ
CAPlusCA
OpenAlex
Sciact
Файлы:
Полный текст от издателя
Даты:
| Опубликована online: | 16 мая 2013 г. |
| Опубликована в печати: | 1 авг. 2013 г. |
Идентификаторы БД:
| Web of science: | WOS:000321664200012 |
| Scopus: | 2-s2.0-84880434226 |
| РИНЦ: | 20443545 |
| Chemical Abstracts: | 2013:766224 |
| Chemical Abstracts (print): | 159:139178 |
| OpenAlex: | W2153283586 |
| Sciact: | 1011 |