Nano Archive

Single step synthesis of nano-sized NiO-Ce0.75Zr0.25O2 composite powders by glycine nitrate process

Prasad, D. Hari and Jung, H. Y. and Jung, H. G. and Kim, B. K. and Lee, H. W. and Lee, J. H. (2008) Single step synthesis of nano-sized NiO-Ce0.75Zr0.25O2 composite powders by glycine nitrate process. Materials Letters, 62 (4-5). 587 - 590.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Single step synthesis of NiO–Ce0.75Zr0.25O2 and Ce0.75Zr0.25O2 powders was successfully achieved by glycine nitrate process (GNP). In this method, a precursor solution is prepared by mixing glycine with an aqueous solution of mixed (Ni, Ce–Zr) metal nitrates in the requisite quantities. The precursor was heated to evaporate excess water, yielding a honey-like liquid. Further heating the precursor at above 200 °C caused the precursor liquid to auto-ignite. Cubic fluorite nature of Ce0.75Zr0.25O2 and NiO phases was identified by XRD for the as-prepared samples. SEM and TEM analysis illustrate the foamy microstructural nature and the particle sizes of range 35–50 nm and 12–18 nm with a BET surface area of 5.5 and 29.2 m2/g for NiO–Ce0.75Zr0.25O2 and Ce0.75Zr0.25O2 powders respectively. Catalytic performance for partial oxidation of methane of Ni–Ce0.75Zr0.25O2 showed 58% methane conversion for a time period of 12 h with good H2 and CO selectivity along with H2/CO ratio of 2.

Item Type:Article
Uncontrolled Keywords:Glycine nitrate process; Nano-materials; Ceria–zirconia; Catalysts; SOFC
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6677
Deposited By:SPI
Deposited On:10 Feb 2010 09:16
Last Modified:10 Feb 2010 09:16

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