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Journal of Inorganic Materials

Journal of Inorganic Materials >

2007 , Vol. 22 >Issue 4: 657 - 662

DOI: https://doi.org/10.3724/SP.J.1077.2007.00657

Research Paper

Effect of HNO3 Treatment on the La0.6Sr0.4Co0.2Fe0.8O3-δ
Obtained via Combined EDTA-citrate Complexing Process

  • ZHOU Wei ,
  • XUE Xiao-Ping ,
  • GE Lei ,
  • ZHENG Yao ,
  • SHAO Zong-Ping ,
  • JIN Wan-Qin
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  • Key Laboratory of Materials-Oriented Chemical Engineering of Ministry of Education of China, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

Received date: 2006-07-23

  Revised date: 2006-09-15

  Online published: 2007-07-20

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Abstract

The La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF) composite oxide was prepared via combined EDTA-citrate complexing process with concentrated nitric acid treatment. The treatment would result in the self-combustion of solid state precursors at low temperatures. The effect of preparing conditions on LSCF’s catalytic properties was investigated by using decomposition of peroxide hydrogen as the model. The FT-IR results of the solid state precursor and the pH values of aqueous solution of it were studied to determine the mechanism of the thermal decomposition of organic in the precursor and of the self-combustion process. Moreover, XRD was employed to characterize the crystal structure of LSCF calcined at higher temperatures. The study shows that the treatment can depress the growth of crystallite and improve the
catalysis for decomposition of peroxide hydrogen. Of the all samples, the LSCF-40-900 has the highest activity to the decomposition of peroxide hydrogen.

Key words： perovskite-type oxide; La0.6Sr0.4Co0.2Fe0.8O3-δ; HNO3 treatment; decomposition of peroxide hydrogen

Cite this article

ZHOU Wei , XUE Xiao-Ping , GE Lei , ZHENG Yao , SHAO Zong-Ping , JIN Wan-Qin . Effect of HNO3 Treatment on the La0.6Sr0.4Co0.2Fe0.8O3-δ
Obtained via Combined EDTA-citrate Complexing Process[J]. Journal of Inorganic Materials, 2007 , 22(4) : 657 -662 . DOI: 10.3724/SP.J.1077.2007.00657

References

[1] Kharton V V, Yaremchenko A A, Kovalevsky A V, et al. J. Membr. Sci., 1999, 163 (2): 307--317.
[2] Ullmann H, Trofimenko N. Solid State Ionics, 1999, 119 (1--4): 1--8.
[3] Kharton V V, Naumovich E N, Kovalevsky A V, et al. Solid State Ionics, 2000, 138 (1--2): 135--148.
[4] 黄端平, 徐庆, 陈文, 等. (HUANG Duan-Ping, et al).
无机材料学报(Journal of Inorganic Materials), 2005, 20 (1): 133--138.
[5] 黄端平, 徐庆, 陈文, 等. (HUANG Duan-Ping, et al).
无机材料学报 (Journal of Inorganic Materials), 2003, 18 (5): 1039--1044.
[6] Tan X Y, Liu Y T, Li K. Ind. Eng. Chem. Res., 2005, 44 (1): 61--66.
[7] Xu S J, Thomson W J. Ind. Eng. Chem. Res., 1998, 37 (4): 1290--1299.
[8] Hwang H J, Moon J W, Lee S H, et al. J. Power Sources, 2005, 145 (2): 243--248.
[9] Zhou W, Shao Z P, Jin W Q. J. Alloys Compds., 2006, 426 (1-7): 368--374.
[10] Bell R J, Millar G J, Drennan J. Solid State Ionics, 2000, 131 (3--4): 211--220.
[11] Wu Z T, Zhou W, Jin W Q, et al. AIChE, 2005, 52 (2): 769--776.
[12] Zhou W, Shao Z P, Jin W Q. Chin. Chem. Lett., 2006, 17 (10): 1353--1356.
[13] Jiang S P, Lin Z G, Tseung A C. J. Electrochem. Soc., 1990, 137 (3): 759--764.
[14] Ryczkowski J, Janda B. Vib. Spectrosc., 2000, 22 (1--2): 163--167.
[15] Schwickardi M, Johann T, Schmidt W, et al. Chem. Mater., 2002, 14: 3913--3919.
[16] Li S G, Jin W Q, Xu N P, et al. Solid State Ionics, 1999, 124 (1-2): 161--170. [17] Deraz N A. Mater. Lett., 2002, 57 (4): 914--920.
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