Effect of the synthesis conditions on the crystal, local, and electronic structure of Ce1-x 3+ Cex 4+ AlO3 + x/2

Cerium monoaluminate Ce1-x 3+ Cex 4+ AlO3+x/2 powders with low contents of Ce4+ cations (x ∼ 0.052) were synthesized. A set of modern local structure sensitive methods of analysis, including X-ray absorption spectroscopy and Raman spectroscopy, were used to study the crystal, local, and electronic structures of the synthesized compounds. The degree of reduction and the thermal stability to oxidation of reduced powders depend not only on the reduction conditions but also on the conditions of heat pretreatment of the initial samples. It was concluded that the reaction 4CeAlO3 + O2 ↔ 4CeO2 + 2Al2O3 is reversible. © Pleiades Publishing, Ltd., 2016.

Authors
Popov V.V.1 , Menushenkov A.P.1 , Zubavichus Ya.V.2 , Sharapov A.S.1 , Kabanova V.A.1 , Yastrebtsev A.A.1 , Arzhatkina L.A.3 , Tsarenko N.A.3 , Strel'nikova A.M.3 , Kurilkin V.V. 4
Journal
Russian Journal of Inorganic Chemistry
Publisher
IAPC Nauka/Interperiodica
Number of issue
2
Language
English
Pages
225-231
Status
Published
Link
External link
DOI
10.1134/S0036023616020170
Volume
61
Year
2016
Organizations
  • 1 National Research Nuclear University, MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, Moscow, 115409, Russian Federation
  • 2 National Research Center, Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182, Russian Federation
  • 3 JSC, All-Russian Research Institute of Chemical Technology, Kashirskoe sh. 33, Moscow, 115409, Russian Federation
  • 4 Peoples' Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198, Russian Federation
Keywords
Aluminum compounds; Crystal structure; Electronic structure; Powders; X ray absorption spectroscopy; Degree of reduction; Heat pretreatment; Local structure; Reduction conditions; Synthesis conditions; Cerium compounds
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/4013/
Share

Other records