Coprecipitated Iron-Containing Catalysts (Fe-Al2O3, Fe-Co-Al2O3, Fe-Ni-Al2O3) for Methane Decomposition at Moderate Temperatures: I. Genesis of Calcined and Reduced Catalysts | Sciact - CRIS-система Института катализа

Coprecipitated Iron-Containing Catalysts (Fe-Al2O3, Fe-Co-Al2O3, Fe-Ni-Al2O3) for Methane Decomposition at Moderate Temperatures: I. Genesis of Calcined and Reduced Catalysts Научная публикация

Журнал

Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875

Вых. Данные

Год: 2004, Том: 268, Номер: 1-2, Страницы: 127-138 Страниц : 12 DOI: 10.1016/j.apcata.2004.03.045

Ключевые слова

EXAFS, FTIR spectroscopy, Iron-alumina, Iron-cobalt-alumina, Iron-nickel-alumina, Radial electron density distribution, Reduction, X-ray diffraction

Авторы

Reshetenko T.V. ¹ , Avdeeva L.B. ¹ , Khassin A.A. ¹ , Kustova G.N. ¹ , Ushakov V.A. ¹ , Moroz E.M. ¹ , Shmakov A.N. ¹ , Kriventsov V.V. ¹ , Kochubey D.I. ¹ , Pavlyukhin Y.T. ² , Chuvilin A.L. ¹ , Ismagilov Z.R. ¹

Организации

1	Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2	Institute of Solid State Chemistry and Mechanochemistry, Ul. Kutateladze 18, Novosibirsk 630128, Russia

Информация о финансировании (2)

1	Civilian Research and Development Foundation	REC-008
2	Netherlands Organisation for Scientific Research

Genesis of the composition and structure of the active component of coprecipitated iron containing catalysts (Fe-Al2O3, Fe-Co-Al2O3, Fe-Ni-Al2O3) with high metal loadings (>50 wt.%) for methane decomposition at moderate temperatures (600–650 °C) has been investigated by XRD, EXAFS, radial electron density distribution (REDD), TEM, FTIR and Mössbauer spectroscopy. The main stages of the catalyst genesis during drying, thermal decomposition and reduction have been studied. For bimetallic systems (Fe-Co-Al2O3, Fe-Ni-Al2O3) intermediate spinel phases with a composition (MII, Fe)3O4 (M=Co, Ni) have been shown to form during heat treatment and reduction. This leads to a decrease of the reduction temperature for iron oxides. Reduced bimetallic catalysts (Fe-Co-Al2O3, Fe-Ni-Al2O3) are composed of alloys. The structure and parameters of their crystal lattices depend on the type and concentration of the added metal. Alumina has been shown to behave as a structural promoter. A model of the reduced catalysts consisting of highly dispersed (20–50 nm) metal and alumina particles with a spinel phase at their interface has been suggested.

Reshetenko T.V. , Avdeeva L.B. , Khassin A.A. , Kustova G.N. , Ushakov V.A. , Moroz E.M. , Shmakov A.N. , Kriventsov V.V. , Kochubey D.I. , Pavlyukhin Y.T. , Chuvilin A.L. , Ismagilov Z.R.
Coprecipitated Iron-Containing Catalysts (Fe-Al2O3, Fe-Co-Al2O3, Fe-Ni-Al2O3) for Methane Decomposition at Moderate Temperatures: I. Genesis of Calcined and Reduced Catalysts
Applied Catalysis A: General. 2004. V.268. N1-2. P.127-138. DOI: 10.1016/j.apcata.2004.03.045 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	9 февр. 2004 г.
Принята к публикации:	17 мар. 2004 г.
Опубликована online:	18 мая 2004 г.
Опубликована в печати:	10 авг. 2004 г.

Web of science:	WOS:000222128700017
Scopus:	2-s2.0-2942564370
РИНЦ:	13449196
Chemical Abstracts:	2004:461159
Chemical Abstracts (print):	141:91231
OpenAlex:	W2112725343

БД	Цитирований
Web of science	82
Scopus	87
РИНЦ	89
OpenAlex	77