Effects of Calcination Temperature on Crystal Structure of Pr-Nd Oxides

Hui Qing Li; Rui Xiang Zhang; Hai Wang Liu; Shi Zhi Wang; Xian Ku Hao

doi:10.4028/www.scientific.net/AMR.233-235.2918

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Effects of Calcination Temperature on Crystal...

Effects of Calcination Temperature on Crystal Structure of Pr-Nd Oxides

Abstract:

Ammonium hydrogen carbonate is taken as the precipitating agent to prepare Pr-Nd carbonates from the raw material of Pr-Nd chloride solution. Pr-Nd oxides have been prepared at different calcination temperature in the range of 800°C-1500°C. The oxides were characterized by XRD and XPS.Calcination temperature effects on the structure of Pr-Nd oxides and the valence state of Pr in Pr-Nd oxides have been studied; Results showed that praseodymium oxide full entered into the lattices of neodymium oxide. The crystal structure changed from cubic into hexagonal system with increasing calcination temperature.The valence of Pr in Pr-Nd binary oxides are Pr³⁺ and Pr⁴⁺.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

2918-2921

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.2918

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May 2011

Authors:

Hui Qing Li, Rui Xiang Zhang, Hai Wang Liu, Shi Zhi Wang, Xian Ku Hao

Keywords:

Calcination Temperature, Pr-Nd Binary Oxide, Structure

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References

[1] AL-KHAFAJI M A, JONES D G R, RAINFORTH W M, GIBBS M R J, DAVIES H A, HARRIS I R. Magnetic force imaging of domain structures for a (Pr/Nd)FeB alloy[J]. Journal of Applied Physics, 1998, 83(5): 2715-2718.

DOI: 10.1063/1.367035

Google Scholar

[2] ZHANG Ya-wen，YAN Zheng-guang，LIAO Chun-sheng, JIA Jiang-tao YAN Chun-hua. Calcination temperature effects on particle size，specific surface area and morphology of individual rare earth oxide[J]. Journal of the Chinese Rare Earth Society, 2001, 19(4): 378-380.

Google Scholar

[3] ZHANG Rui-xiang, LI Hui-qin, LIU Hai-wang, XU Zong-ze, HU Shan-shan, HAO Xian-ku. Effects of calcination temperature on particle size and morphology of Pr-Nd oxides[J]. Rare Earth, 2010, 31(1): 48-52.

Google Scholar

[4] Metal Department of Zhongshan University Compile. Physical and chemical constants of rare earth[M]. Beijing: Metallurgical Industry Press, 1978: 45.

Google Scholar

[5] SUCHORSKI Y, WROBEL R, BECKER S, OPALINSKA A, NARKIEWICZ U, PODSIADLY M, WEISS H. Surface chemistry of zirconia nanopowders doped with Pr2O3:an XPS study[J]. Acta Physica Polonica A, 2008, 114: 125-134.

DOI: 10.12693/aphyspola.114.s-125

Google Scholar

[6] ZHANG Zhao, WU Pan, WANG Le-fei, KANG Ming. Influence of ultrasonic irradiation on crystal lattice of hydrated titanium dioxide and particle size of calcined titanium dioxide [J]. The Chinese Journal of Nonferrous Metals, 2005, 15(2): 321-327.

Google Scholar

[7] NITANI H, NAKAGAWA T, YAMANOUCHI M, OSUKI T, YUYA M, YAMAMOTO T A. XAFS and XRD study of ceria doped with Pr, Nd or Sm[J]. Materials Letters, 2004, 58(15): 2076-2081.

DOI: 10.1016/j.matlet.2004.01.005

Google Scholar

[8] HE H, DAI H X, AU C T. Defective structure, oxygen mobility, oxygen storage capacity, and redox properties of RE-based (RE=Ce, Pr) solid solutions[J]. Catalysis Today, 2004, 90: 245–254.

DOI: 10.1016/j.cattod.2004.04.033

Google Scholar