Promoting Effect of Potassium and Calcium Additives to Cerium-Zirconium Oxide Catalysts for the Complete Oxidation of Carbon Monoxide Научная публикация
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2017, Том: 58, Номер: 5, Страницы: 585-592 Страниц : 8 DOI: 10.1134/S0023158417050081 | ||
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Реферат:
The effect of potassium and calcium additives on the catalytic activity of the Ce0.8Zr0.2O2 system in the reaction of CO oxidation was studied. With the use of X-ray diffraction analysis, it was found that the Ce0.8Zr0.2O2 and Ce0.8Zr0.2O2-Ca,K samples contained a mixed oxide of cerium and zirconium; the presence of the independent phases of potassium and calcium compounds in the modified system was not detected. With the use of the low-temperature adsorption-desorption of nitrogen, X-ray photoelectron spectroscopy, and temperature-programmed reduction, it was established that the Ce0.8Zr0.2O2-Ca,K system (in spite of the fact that its specific surface area was lower than that of Ce0.8Zr0.2O2) contained more active oxygen on the surface; peroxide and superoxide complexes formed upon the chemisorption of O-2 can act as active oxygen species. This can be the reason for a higher efficiency of the Ce0.8Zr0.2O2-Ca,K system in comparison with that of the unmodified oxide. The results obtained indicate that the ash impurities of Ca and K can increase the catalytic activity of the biomorphic mixed oxides Ce0.8Zr0.2O2 prepared with the use of sawdust as a template.
Библиографическая ссылка:
Kaplin I.Y.
, Lokteva E.S.
, Golubina E.V.
, Maslakov K.I.
, Chernyak S.A.
, Lunin V.V.
Promoting Effect of Potassium and Calcium Additives to Cerium-Zirconium Oxide Catalysts for the Complete Oxidation of Carbon Monoxide
Kinetics and Catalysis. 2017. V.58. N5. P.585-592. DOI: 10.1134/S0023158417050081 WOS Scopus РИНЦ CAPlus OpenAlex
Promoting Effect of Potassium and Calcium Additives to Cerium-Zirconium Oxide Catalysts for the Complete Oxidation of Carbon Monoxide
Kinetics and Catalysis. 2017. V.58. N5. P.585-592. DOI: 10.1134/S0023158417050081 WOS Scopus РИНЦ CAPlus OpenAlex
Оригинальная версия:
Каплин И.Ю.
, Локтева Е.С.
, Голубина Е.В.
, Маслаков К.И.
, Черняк С.А.
, Лунин В.В.
Промотирующий эффект добавок калия и кальция в церий-циркониевые оксидные катализаторы полного окисления СО
Кинетика и катализ. 2017. Т.58. №5. С.598-605. DOI: 10.7868/S0453881117050094 РИНЦ OpenAlex OpenAlex
Промотирующий эффект добавок калия и кальция в церий-циркониевые оксидные катализаторы полного окисления СО
Кинетика и катализ. 2017. Т.58. №5. С.598-605. DOI: 10.7868/S0453881117050094 РИНЦ OpenAlex OpenAlex
Даты:
| Поступила в редакцию: | 10 янв. 2017 г. |
| Опубликована в печати: | 1 сент. 2017 г. |
Идентификаторы БД:
| Web of science: | WOS:000411992000012 |
| Scopus: | 2-s2.0-85030624962 |
| РИНЦ: | 31061957 |
| Chemical Abstracts: | 2017:1586814 |
| OpenAlex: | W2748869111 |