Spectroscopy and Spectral Analysis, Volume. 36, Issue 12, 4063(2016)

Preparation of La2Zr2O7 Powder with Combustion Method and Its Spectral Properties

LIU Xiao-zhen1、*, ZHANG Cheng1, CHEN Jie2, SHEN Qin-wei1, GUO Ling-ling1, and XIE Guang1
Author Affiliations
  • 1[in Chinese]
  • 2Regenia AB, Stockholm 10691, Sweden
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    La2Zr2O7 powder was prepared with combustion method with La2O3, Zr(NO3)4 and glycine as raw materials. La2Zr2O7 powders were characterized with ICP-AES, EDAX, XRD, IR and TG-DTA techniques, respectively. Effects of heat treatment temperature on the XRD spectra and IR spectra of La2Zr2O7 powders were studied. The X-ray diffraction pattern of La2Zr2O7 powder after heat treatment at 600 ℃ has one diffraction peak, and the diffraction peak is quite broad, therefore, the crystal structure of the La2Zr2O7 powder is semi-crystal structure. With the increase of heat treatment temperature, diffraction peaks become gradually sharp and increase. The crystal structure of the La2Zr2O7 powders after heat treatment in 750~800 ℃ are pyrochlore structure. Analysis results of IR spectra of La2Zr2O7 powders after heat treatment in 650~750 ℃ show that the crystal structure of the La2Zr2O7 powders after heat treatment at 750 ℃ is pyrochlore structure, and the analysis results of XRD and IR are the same. Analysis results of TG-DTG of La2Zr2O7 powders show that the crystal structure of the La2Zr2O7 powders are stability in 120~1 600 ℃.

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    LIU Xiao-zhen, ZHANG Cheng, CHEN Jie, SHEN Qin-wei, GUO Ling-ling, XIE Guang. Preparation of La2Zr2O7 Powder with Combustion Method and Its Spectral Properties[J]. Spectroscopy and Spectral Analysis, 2016, 36(12): 4063

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    Paper Information

    Received: Nov. 6, 2015

    Accepted: --

    Published Online: Dec. 30, 2016

    The Author Email: Xiao-zhen LIU (liuxiaozhen5291@163.com)

    DOI:10.3964/j.issn.1000-0593(2016)12-4063-04

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