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Preparation and characterization of LnPrO(3+y) (Ln = Y and lanthanide) - a series of mixed lanthanide oxides
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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 0167-577X.
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Abstract
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 | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
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Journal or Publication Title: | MATERIALS LETTERS | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0167-577X | ||||
Official Date: | September 1998 | ||||
Dates: |
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Volume: | 37 | ||||
Number: | 1-2 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 10-16 | ||||
Publication Status: | Published |
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