Sciact
  • EN
  • RU

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

Journal Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210
Output data Year: 2023, Volume: 64, Number: 4, Pages: 484-493 Pages count : 10 DOI: 10.1134/S0023158423040079
Tags nickel oxide, reduction, activation, in situ XRD analysis, TPR, modifying additives
Authors Mikhnenko M.D. 1,2 , Afonasenko T.N. 1,3 , Rogov V.A. 1,2 , Bulavchenko O.A. 1,2
Affiliations
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

Funding (1)

1 Ministry of Science and Higher Education of the Russian Federation 0239-2021-0002

Abstract: —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.
Cite: 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
Original: 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
Dates:
Submitted: Dec 27, 2022
Accepted: Mar 22, 2023
Published print: Jul 23, 2023
Identifiers:
Web of science: WOS:001034791000014
Scopus: 2-s2.0-85165556734
Elibrary: 54370859
OpenAlex: W4385163630
Citing: Пока нет цитирований
Altmetrics: