Activation of Nickel Oxide Catalysts Modified with Cobalt, Cerium, Manganese, and Zirconium

Activation of Nickel Oxide Catalysts Modified with Cobalt, Cerium, Manganese, and Zirconium Научная публикация

Журнал

Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210

Вых. Данные

Год: 2023, Том: 64, Номер: 4, Страницы: 484-493 Страниц : 10 DOI: 10.1134/S0023158423040079

Ключевые слова

nickel oxide, reduction, activation, in situ XRD analysis, TPR, modifying additives

Авторы

Mikhnenko M.D. ^1,2 , Afonasenko T.N. ^1,3 , Rogov V.A. ^1,2 , Bulavchenko O.A. ^1,2

Организации

1	Federal Research Center Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2	Novosibirsk State University, Novosibirsk, 630090 Russia
3	Center of New Chemical Technologies, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Omsk, 644040 Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации

0239-2021-0002

—The activation of a series of catalysts with the general formula Ni0.9M0.1O (M = Co, Ce, Mn, and Zr) synthesized by coprecipitation and the effect of modifying additives on the phase composition and structure of these catalysts were studied. The effect of additives on the initial state of the samples was studied by X-ray diffraction (XRD) analysis, and their role in the process of NiO reduction was studied using in situ XRD analysis and temperature-programmed reduction with hydrogen (TPR-H2). It was found that the modifiers changed the structure and microstructure of the initial samples to increase the specific surface area and decrease the average coherent scattering region (CSR) sizes of NiO. The introduction of Mn and Co led to the formation of substitutional solid solutions with the oxide NiO. For Ce and Zr, the release of the oxide CeO2 and X-ray amorphous ZrOx was observed. The use of these additives led to an increase in the temperature of NiO reduction to a metallic state compared to that of the massive oxide. In addition, the effect of modifying additives on the particle size of the final metal was revealed. The use of Ce and Mn decreased the average CSR size of Ni by a factor of 2–5 compared to that of massive NiO.

Mikhnenko M.D. , Afonasenko T.N. , Rogov V.A. , Bulavchenko O.A.
Activation of Nickel Oxide Catalysts Modified with Cobalt, Cerium, Manganese, and Zirconium
Kinetics and Catalysis. 2023. V.64. N4. P.484-493. DOI: 10.1134/S0023158423040079 WOS Scopus РИНЦ OpenAlex

Михненко М.Д. , Афонасенко Т.Н. , Рогов В.А. , Булавченко О.А.
Исследование процесса активации никель-оксидных катализаторов, модифицированных кобальтом, церием, марганцем и цирконием
Кинетика и катализ. 2023. Т.64. №4. С.486-496. DOI: 10.31857/S0453881123040081 РИНЦ OpenAlex

Поступила в редакцию:	27 дек. 2022 г.
Принята к публикации:	22 мар. 2023 г.
Опубликована в печати:	23 июл. 2023 г.

Web of science:	WOS:001034791000014
Scopus:	2-s2.0-85165556734
РИНЦ:	54370859
OpenAlex:	W4385163630

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