Bellakki, M.B. and Shivakumara, C. and Baidya, T. and Prakash, A.S. and Vasanthacharya, N.Y. and Hegde, M.S. (2008) Synthesis, structure and oxygen-storage capacity of Pr1xZrxO2d and Pr1xyPdyZrxO2d. Materials Research Bulletin, 43 (10). pp. 2658-2667. ISSN 0025-5408

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Abstract

Nanocrystalline Pr1xZrxO2d (0 x 1) and Pr1xyPdyZrxO2d (x = 0.50, y = 0.02) solid solutions have been synthesized by a single step solution combustion method. The whole range of solid solution compositions crystallize in cubic fluorite structure. The lattice parameter ‘a’ linearly varied up to x = 1.0. Oxygen-storage capacity (OSC) and redox properties of Pr1xZrxO2d (0.0 x 0.8) solid solutions have been investigated by temperature-programmed reduction (TPR) and are compared with those of Ce1xZrxO2. Pr1xZrxO2d exhibited H2 uptake and CO oxidation at a lower temperature than Ce1ZrxO2. Small amount of Pd ion (y = 0.02) substitution was found to bring down the temperature of oxygen release–storage significantly.

Item Type:	Article
Uncontrolled Keywords:	Oxides; Chemical synthesis; X-ray diffraction; Catalytic properties
Subjects:	Functional Materials
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	01 Apr 2012 10:57
Last Modified:	01 Apr 2012 10:57
URI:	http://cecri.csircentral.net/id/eprint/430

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