Bellakki, Manjunath B. ; Shivakumara, C. ; Baidya, Tinku ; Prakash, A. S. ; Vasanthacharya, N. Y. ; Hegde, M. S. (2008) Synthesis, structure and oxygen-storage capacity of Pr1-xZrxO2-δ and Pr1-x-yPdyZrxO2-δ Materials Research Bulletin, 43 (10). pp. 2658-2667. ISSN 0025-5408
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00255...
Related URL: http://dx.doi.org/10.1016/j.materresbull.2007.10.033
Abstract
Nanocrystalline Pr1-xZrxO2-δ (0 ≤ x ≤ 1) and Pr1-x-yPdyZrxO2-δ (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 Pr1-xZrxO2-δ (0.0 ≤ x ≤ 0.8) solid solutions have been investigated by temperature-programmed reduction (TPR) and are compared with those of Ce1-xZrxO2. Pr1-xZrxO2-δ exhibited H2 uptake and CO oxidation at a lower temperature than Ce1-xZrxO2. Small amount of Pd ion (y = 0.02) substitution was found to bring down the temperature of oxygen release-storage significantly.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Oxides; B. Chemical Synthesis; C. X-ray Diffraction; D. Catalytic Properties |
| ID Code: | 15900 |
| Deposited On: | 13 Nov 2010 12:55 |
| Last Modified: | 03 Jun 2011 07:16 |
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