Restructurings in the Catalyst for Methane Vapor Reforming Resistant to Sulfur Hydride Impurity: Configuration of Catalytically Active Nanocomponents of a Core (Invar FeNi)-Shell (γ-Fe2O3) Type | Sciact - CRIS-система Института катализа

Restructurings in the Catalyst for Methane Vapor Reforming Resistant to Sulfur Hydride Impurity: Configuration of Catalytically Active Nanocomponents of a Core (Invar FeNi)-Shell (γ-Fe2O3) Type Научная публикация

Журнал

Nanotechnologies in Russia
ISSN: 1995-0780 , E-ISSN: 1995-0799

Вых. Данные

Год: 2012, Том: 7, Номер: 9-19, Страницы: 471-481 Страниц : 11 DOI: 10.1134/S1995078012050151

Ключевые слова

Nickel Oxide; XANES Spectrum; EXAFS Spectrum; Invar Alloy; Aluminum Spinel

Авторы

Tsodikov M.V. ¹ , Kurdyumov S.S. ¹ , Murzin V.Yu. ^1,2 , Maksimov Yu.V. ³ , Imshennik V.K. ³ , Novichikhin S.V. ³ , Maksimovskii E.A. ⁴ , Kriventsov V.V. ⁵

Организации

1	Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 117912 Russia
2	National Research Centre “Kurchatov Institute,” pl. Akademika Kurchatova 1, Moscow, 123182 Russia
3	Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119991 Russia
4	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrentyava 3, Novosibirsk, 630090 Russia
5	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrentyava 5, Novosibirsk, 630090 Russia

Информация о финансировании (9)

1	Российский фонд фундаментальных исследований	11-03-00820
2	Российский фонд фундаментальных исследований	11-03-12014
3	Российский фонд фундаментальных исследований	12-03-01039 (01201258422)
4	Российский фонд фундаментальных исследований	12-03-01154
5	Российский фонд фундаментальных исследований	12-03-90840
6	Российский фонд фундаментальных исследований	12-03-90850
7	Министерство образования и науки Российской Федерации	16.552.11.7003
8	Министерство образования и науки Российской Федерации	16.518.11.7019
9	Haldor Topsoe (Denmark)

The evolution of a nickel-containing catalyst based on a mixed oxide substrate obtained from vermiculite etching solutions has been investigated using the methods of Moessbauer and EXAFS spectroscopy, XRD, and transmission electron microscopy. The catalyst manifests high activity in the process of methane vapor reforming (MVR) and is resistant to low sulfur hydride content. Upon the deposition of active components (Ni-La) and thermal treatment at 900°C, the phases of nickel oxide and superparamagnetic particles of γ-Fe2O3 distributed in the structure of the mixed spinel of a composition Mg(FeAl)O4 ± δ are formed on the catalyst surface. In the course of the preliminary reduction activation by hydrogen, the surface phases interact with the formation of hybrid systems of a core-shell type with a size of 15–17 nm. The core comprises particles of the reduced α-Fe, invar alloy: γ-FeNi and α-FeNi surrounded by a shell of superparamagnetic clusters of γ-Fe2O3 1–4 nm in size with a strong interaction with the nucleus and isostructural mixed oxide with the structure of spinel. After catalysis in the MVR process, at T = 790–820°C the particles of the catalyst containing 30 ppm of H2S become enlarged up to 40–45 nm without a change in shape. The particle enlargement occurs as a result of the increase in the core size, whereas the shell size remains unchanged. It is assumed that the shell decomposes sulfur hydride until elementary sulfur, whereas the system core manifests high activity in the MVR process.

Tsodikov M.V. , Kurdyumov S.S. , Murzin V.Y. , Maksimov Y.V. , Imshennik V.K. , Novichikhin S.V. , Maksimovskii E.A. , Kriventsov V.V.
Restructurings in the Catalyst for Methane Vapor Reforming Resistant to Sulfur Hydride Impurity: Configuration of Catalytically Active Nanocomponents of a Core (Invar FeNi)-Shell (γ-Fe2O3) Type
Nanotechnologies in Russia. 2012. V.7. N9-19. P.471-481. DOI: 10.1134/S1995078012050151 Scopus РИНЦ OpenAlex

Цодиков М.В. , Курдюмов С.С. , Мурзин В.Ю. , Максимов Ю.В. , Имшенник В.К. , Новичихин С.В. , Максимовский Е.А. , Кривенцов В.В.
Структурные перестройки катализатора парового риформинга метана, устойчивого к примеси сероводорода: конфигурация каталитически активных нанокомпонентов «ядро (инвар FeNi)-оболочка(γ-Fе2O3)»
Российские нанотехнологии. 2012. Т.7. №9-10. С.36-43. RSCI РИНЦ

Поступила в редакцию:	17 апр. 2012 г.
Принята к публикации:	16 мая 2012 г.
Опубликована в печати:	1 сент. 2012 г.
Опубликована online:	17 окт. 2012 г.

Scopus:	2-s2.0-84867732583
РИНЦ:	20497033
OpenAlex:	W2017996874

БД	Цитирований
Scopus	1
РИНЦ	2
OpenAlex	1