Effect of the Calcination Temperature on the Properties of MnOx–CuO–ZrO2–CeO2 Catalysts for CO Oxidation | Sciact - CRIS-система Института катализа

Effect of the Calcination Temperature on the Properties of MnOx–CuO–ZrO2–CeO2 Catalysts for CO Oxidation Научная публикация

Журнал

Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779

Вых. Данные

Год: 2024, Том: 65, Номер: 7, Страницы: 1371-1386 Страниц : 16 DOI: 10.1134/s0022476624070084

Ключевые слова

mixed oxides, CO oxidation, catalyst, fluorite structure, nanoparticles

Авторы

Bulavchenko O.A. ¹ , Afonasenko T.N. ² , Konovalova V.P. ¹ , Rogov V.A. ¹ , Gerasimov E.Yu. ¹ , Aidakov E.E. ^1,3 , Vinokurov Z.S. ^1,3

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Center of New Chemical Technologies, Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Omsk, Russia
3	Synchrotron Radiation Facility “SKIF”, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Koltsovo, Russia

Информация о финансировании (1)

Российский научный фонд

21-73-10218

Four-component oxide catalysts MnOx–CuO–ZrO2–CeO2 are synthesized by co-precipitation with varying the calcination temperature from 400 °C to 800 °C. Formation and decomposition processes in mixed oxides are studied by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The redox properties of the obtained samples are tested by temperature-programmed hydrogen reduction, and the catalytic characteristics are examined in the CO oxidation reaction. At 400-600 °C homogeneous solid solution MnxCuyZrzCeqO2 with the fluorite structure is formed. Temperature elevation to 700-800 °C facilitates the gradual decomposition of initial oxide, with manganese and copper cations leaving its composition in the form of highly dispersed CuO and CuxMn3–xO4 particles. The occurrence of different active states in the catalyst and their transitions into each other under the temperature effect is shown to maintain the high activity in the CO oxidation reaction up to 800 °C.

Bulavchenko O.A. , Afonasenko T.N. , Konovalova V.P. , Rogov V.A. , Gerasimov E.Y. , Aidakov E.E. , Vinokurov Z.S.
Effect of the Calcination Temperature on the Properties of MnOx–CuO–ZrO2–CeO2 Catalysts for CO Oxidation
Journal of Structural Chemistry. 2024. V.65. N7. P.1371-1386. DOI: 10.1134/s0022476624070084 WOS Scopus РИНЦ CAPlus OpenAlex

Булавченко О.А. , Афонасенко Т.Н. , Коновалова В.П. , Рогов В.А. , Герасимов Е.Ю. , Айдаков Е.Е. , Винокуров З.С.
Влияние температуры прокаливания на свойства MnOх-CuO-ZrO2-CeO2 катализаторов окисления СО
Журнал структурной химии. 2024. Т.65. №7. 129103 . DOI: 10.26902/JSC_id129103 РИНЦ OpenAlex

Поступила в редакцию:	9 февр. 2024 г.
Принята к публикации:	15 мар. 2024 г.
Опубликована в печати:	26 июл. 2024 г.
Опубликована online:	26 июл. 2024 г.

Web of science:	WOS:001278983100013
Scopus:	2-s2.0-85199804396
РИНЦ:	68537991
Chemical Abstracts:	2024:1636929
OpenAlex:	W4401010811

Пока нет цитирований