东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (11): 1574-1578.DOI: 10.12068/j.issn.1005-3026.2017.11.012

• 材料与冶金 • 上一篇    下一篇

制备参数对YBaCo4O7+○δ中低温氧储存能力的影响

于庆波1, 王拓1, 闫子文1, 李鑫慧2   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 国家知识产权局 专利局专利审查协作天津中心, 天津300304)
  • 收稿日期:2016-05-20 修回日期:2016-05-20 出版日期:2017-11-15 发布日期:2017-11-13
  • 通讯作者: 于庆波
  • 作者简介:于庆波(1966-),男,山东莱阳人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51576035).

Effects of Preparation Parameters on Oxygen Storage Capacity of YBaCo4O7+○δ at Medium and Low Temperature

YU Qing-bo1, WANG Tuo1, YAN Zi-wen1, LI Xin-hui2   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. Patent Examination Cooperation Tianjin Center of the Patent Office, SIPO, Tianjin 300304, China.
  • Received:2016-05-20 Revised:2016-05-20 Online:2017-11-15 Published:2017-11-13
  • Contact: YU Qing-bo
  • About author:-
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摘要: 利用固相反应法和溶胶凝胶法在不同制备参数下制备了载氧体YBaCo4O7+○δ(Y114相),利用XRD检测了样品的物相组成,使用热重分析仪研究了制备参数对Y114相中低温条件下氧储存能力的影响.结果表明:以固相反应法制备的Y114相样品的中低温氧储存能力强于溶胶凝胶法;二次煅烧20h样品的中低温氧储存能力更强;以固相反应法制备,在1150℃二次煅烧20h、炉冷冷却样品的非化学计量氧δ值为0.89;以溶胶凝胶法制备,在1050℃下二次煅烧20h、空冷冷却样品的δ值为0.83.

关键词: 制备参数, Y114相载氧体, 物相组成, 氧储存能力, 非化学计量氧

Abstract: A series of YBaCo4O7+ ○δ○ oxygen carriers were synthesized by solid state reaction method and sol-gel method with different preparation parameters. The phase composition of the samples were analyzed by X-ray diffraction. The effects of preparation parameters on the oxygen storage capacity of Y114 phase at medium and low temperature were investigated by means of thermogravimetry. The experimental results show that the oxygen storage capacity of Y114 phase prepared by the solid state reaction method is higher than that of the one prepared by sol-gel method and the Y114 phase calcined for 20h has a better performance. The δ (nonstoichiometric oxygen) of Y114 phase is 0.89, where the sample is synthesized by the solid state reaction method, calcined at 1150℃ for 20h and furnace cooling, while the δ becomes 0.83 where it is synthesized by the sol-gel method, calcined at 1050℃ for 20h and cooled in air.

Key words: preparation parameters, Y114 phase oxygen carriers, phase composition, oxygen storage capacity, nonstoichiometry oxygen

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