Genesis and Structural Properties of (Ce1–xMx)0.8Ni0.2Oy (M = La, Mg) Oxides | Sciact - CRIS-система Института катализа

Genesis and Structural Properties of (Ce1–xMx)0.8Ni0.2Oy (M = La, Mg) Oxides Научная публикация

Журнал

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

Вых. Данные

Год: 2020, Том: 61, Номер: 7, Страницы: 1080–1089 Страниц : 10 DOI: 10.1134/S0022476620070100

Ключевые слова

cerium dioxides, solid solutions, powder X-ray diffraction analysis, electron microscopy, Raman spectroscopy, nanomaterials

Авторы

Matus E.V. ¹ , Ismagilov I.Z. ¹ , Ushakov V.A. ¹ , Nikitin A.P. ² , Stonkus O.A. ^1,3 , Gerasimov E.Yu. ¹ , Kerzhentsev M.A. ¹ , Bharali P. ⁴ , Ismagilov Z.R. ^1,2

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Institute of Coal Chemistry and Chemical Materials Science, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
3	Novosibirsk State University, Novosibirsk, Russia
4	Tezpur University, Napaam, Tezpur, Assam, India

Информация о финансировании (1)

Российский фонд фундаментальных исследований

18-53-45012

The genesis and structural properties of (Ce1–xMx)0.8Ni0.2Oy (M = La, Mg; x = 0, 0.2, 0.5, 0.8, 1; 1.0 ≤ y ≤ 1.8) oxides that are promising catalyst precursors are studied. A complex of physicochemical methods (low-temperature nitrogen adsorption, ex situ and in situ powder X-ray diffraction, electron microscopy, Raman spectroscopy, and EDX analysis) is used to show that after the calcination at 500 °C in the oxidizing medium, (Ce1–xMx)0.8Ni0.2Oy become mesoporous materials representing substitutional solid solutions with a cubic fluorite-type structure with supported particles of the Ni-containing phase. When M = La, Ni cations are mainly stabilized in the composition of the Ce–La–Ni–O solid solution, and when M = Mg, they are stabilized in the Mg–Ni–O composition. It is found that La- or Mg-containing samples, as compared to Ce0.8Ni0.2Oy, have highly defective structures and smaller sizes of crystallites (≤ 4 nm, x ≥ 0.5). After thermal treatment of the samples in H2/Не at 800 °C, highly dispersed Ni° particles with a size of 5-10 nm are formed. Metal particles have defects and a polycrystal structure, and they are readily reoxidized in air with the formation of “core@shell” Ni@NiO structures.

Matus E.V. , Ismagilov I.Z. , Ushakov V.A. , Nikitin A.P. , Stonkus O.A. , Gerasimov E.Y. , Kerzhentsev M.A. , Bharali P. , Ismagilov Z.R.
Genesis and Structural Properties of (Ce1–xMx)0.8Ni0.2Oy (M = La, Mg) Oxides
Journal of Structural Chemistry. 2020. V.61. N7. P.1080–1089. DOI: 10.1134/S0022476620070100 WOS Scopus РИНЦ CAPlus OpenAlex

Матус Е.В. , Исмагилов И.З. , Ушаков В.А. , Никитин А.П. , Стонкус О.А. , Герасимов Е.Ю. , Керженцев М.А. , Брахали П. , Исмагилов З.Р.
Генезис и структурные свойства оксидов (Ce1-xMx)0.8Ni0.2Oy (M = La, Mg)
Журнал структурной химии. 2020. Т.61. №7. С.1143-1152. DOI: 10.26902/jsc_id59849RSCI РИНЦ OpenAlex

Поступила в редакцию:	6 нояб. 2019 г.
Принята к публикации:	25 февр. 2020 г.
Опубликована в печати:	1 июл. 2020 г.
Опубликована online:	4 сент. 2020 г.

Web of science:	WOS:000566422200010
Scopus:	2-s2.0-85090233434
РИНЦ:	45344504
Chemical Abstracts:	2020:1779893
OpenAlex:	W3083471696

БД	Цитирований
Scopus	9
Web of science	9
РИНЦ	7
OpenAlex	6