Noble Metal and Sulfuric Acid Modified TiO2 Photocatalysts: Mineralization of Organophosphorous Compounds Научная публикация
| Журнал |
Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883 |
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| Вых. Данные | Год: 2006, Том: 63, Номер: 1-2, Страницы: 114-123 Страниц : 10 DOI: 10.1016/j.apcatb.2005.09.020 | ||
| Ключевые слова | Batch reactor, CWA, Oxidation, Pd, Phosphate, Phosphonate, Pt, TiO2 | ||
| Авторы |
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| Организации |
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Информация о финансировании (4)
| 1 | Academy of Finland | 208134 |
| 2 | North Atlantic Treaty Organization | SfP-981461 |
| 3 | Региональный общественный Фонд содействия отечественной науке | |
| 4 | Совет по грантам Президента Российской Федерации | НШ-1484.2003.3 |
Реферат:
Photocatalytic oxidation by oxygen of air in water suspension of TiO2-based catalysts was carried out for dimethyl methylphosphonate (DMMP) and trimethyl phosphate (TMP)—simulants of warfare agents. Active photocatalysts were prepared via surface modification of standard photocatalyst Degussa P25 with platinum and palladium. The developed catalysts were about three-fold more active than traditionally best photocatalyst Degussa P25. Kinetic curves of DMMP oxidation on TiO2 and Pt/TiO2 are well approximated by the Langmuir–Hinshelwood model with competitive adsorption of oxygen and organophosphorus compound. The increase of activity of Pt/TiO2 is linked with higher oxygen adsorption constant or reaction rate coefficient. Photocatalytic oxidation can be scaled up to a larger reactor with the same reaction rates expressed as mmol l−1 min−1 in mineralization of DMMP. The batch recirculating reactor with total volume 3 l utilizes photocatalyst deposited over porous support and demonstrated higher oxidation rate and catalyst stability compared to suspended photocatalyst. Main criteria for mass-transfer process in the batch recirculating reactor were calculated to understand how concentration cross gradient depends on flow rate. The concentration of oxygen in reaction mixture changed with the stirring or recirculation rate and exerts strong influence on the oxidation rate
Библиографическая ссылка:
Kozlova E.A.
, Vorontsov A.V.
Noble Metal and Sulfuric Acid Modified TiO2 Photocatalysts: Mineralization of Organophosphorous Compounds
Applied Catalysis B: Environmental. 2006. V.63. N1-2. P.114-123. DOI: 10.1016/j.apcatb.2005.09.020 WOS Scopus РИНЦ CAPlusCA OpenAlex
Noble Metal and Sulfuric Acid Modified TiO2 Photocatalysts: Mineralization of Organophosphorous Compounds
Applied Catalysis B: Environmental. 2006. V.63. N1-2. P.114-123. DOI: 10.1016/j.apcatb.2005.09.020 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 4 мая 2005 г. |
| Принята к публикации: | 22 сент. 2005 г. |
| Опубликована online: | 7 нояб. 2005 г. |
| Опубликована в печати: | 22 мар. 2006 г. |
Идентификаторы БД:
| Web of science: | WOS:000236083200014 |
| Scopus: | 2-s2.0-32644457469 |
| РИНЦ: | 13521065 |
| Chemical Abstracts: | 2006:169004 |
| Chemical Abstracts (print): | 144:400943 |
| OpenAlex: | W2033101330 |