Preparation and characterization of LnPrO(3+y) (Ln = Y and lanthanide) - a series of mixed lanthanide oxides
UNSPECIFIED. (1998) Preparation and characterization of LnPrO(3+y) (Ln = Y and lanthanide) - a series of mixed lanthanide oxides. MATERIALS LETTERS, 37 (1-2). pp. 10-16. ISSN 0167-577XFull text not available from this repository.
Citrate gel method has been employed to produce a series of praseodymium based homogeneous mixed rare-earth oxides, LnPrO(3+y) (Ln = Y and lanthanide ion). The ionic size of Ln determines the crystal structure of the mixed oxides. LnPrO(3+y) and CePrO3+y crystallise in the fluorite structure, whereas the remaining oxides adopt the C-type structure. The crystal structure and the unit cell parameters of the oxides obtained at 1173 K in static air have been reported. Wet-chemical analysis suggests that the compositions adopting the fluorite structure are non-stoichiometric, whilst the compositions crystallising in the C-type structure are stoichiometric. The surface area has been measured and the adsorption-desorption isotherms obtained for the compositions. The BET surface area of the oxides are in the range 1.5 to 3.5 m(2) g(-1) and the isotherms reveal that the oxides are free from porosity. (C) 1998 Elsevier Science B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Journal or Publication Title:||MATERIALS LETTERS|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||September 1998|
|Number of Pages:||7|
|Page Range:||pp. 10-16|
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