Particle Size and Composition of Heat-Treated Aluminum-Iridium Catalysts | Sciact - CRIS-system of Boreskov Institute of Catalysis

Particle Size and Composition of Heat-Treated Aluminum-Iridium Catalysts Full article

Journal

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

Output data

Year: 1979, Volume: 20, Number: 1, Pages: 138-141 Pages count : 4

Authors

Moroz E.M. ¹ , Bogdanov S.V. ¹ , Ushakov V.A. ¹ , Levitskii E.A. ¹

Affiliations

1	Institute of Catalysis, Academy of Sciences of the USSR

The x-ray diffraction study of the changes of dispersion of Ir in Ir/Al2O3 catalyst, pretreated at 500-1100° in H or in oxidizing medium (Ar containing 0.003% O), revealed that the stability of dispersed compounds depends on the composition of gaseous phase and on reaction of the active component with the support (here reaction of H2IrCl6 with γ-, η, or δ- Al2O3). The polymorphic transition of alumina enhances reduction of the ionic part of Ir-support complex. A decomposition of this complex leads to the formation of very fine metal particles.

Moroz E.M. , Bogdanov S.V. , Ushakov V.A. , Levitskii E.A.
Particle Size and Composition of Heat-Treated Aluminum-Iridium Catalysts
Kinetics and Catalysis. 1979. V.20. N1. P.138-141. WOS РИНЦ

Мороз Э.М. , Богданов С.В. , Ушаков В.А. , Левицкий Э.А.
Дисперсность и состав термообработанных алюмоиридиевых катализаторов
Кинетика и катализ. 1979. Т.20. №1. С.173-176. РИНЦ ANCAN

Web of science:	WOS:A1979HS79600006
Elibrary:	30632293

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