高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (6): 961.

• 研究快报 • 上一篇    下一篇

NO在Er2O3/Bi2O3催化剂上的程序升温分解

张伟德1, 李基涛1, 古萍英1, 万惠霖1, 区泽棠2   

  1. 1. 厦门大学化学系, 固体表面物理化学国家重点实验室, 物理化学研究所, 厦门, 361005;
    2. 香港浸会大学化学系, 香港九龙
  • 收稿日期:1997-12-30 出版日期:1998-06-24 发布日期:1998-06-24
  • 通讯作者: 张伟德,男,33岁,博±,副教授.
  • 作者简介:张伟德,男,33岁,博±,副教授.
  • 基金资助:

    国家自然科学基金;香港研究基金

Temperature Programmed Decomposition of NO over Er2O3/Bi2O3 Catalysts

ZHANG Wei-De1, LI Ji-Tao1, GU Ping-Ying1, WAN Hui-Lin1, AU Chak-Tong2   

  1. 1. Department of Chemistry, State Key Laboratory for Physical Chemistry of Solid Surface and Institute of Physical Chemistry, Xiamen University, Xiamen, 361005;
    2. Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong
  • Received:1997-12-30 Online:1998-06-24 Published:1998-06-24

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关键词: NO, Er2O3／Bi2O3催化剂, 程序升温表面分解

Abstract: The face centered cubic(fcc) phases of n (Er2O3)/ n (Bi2O3)=5%～40%, molar fraction) which is an oxygen ion conductor were prepared. The decomposition of NOover these Er2O3/Bi2O3 catalysts was examined by means of temperature programmed surface reaction. The results showed that the surface adsorbed NO decomposed to N2 and O2 at ca. 600 ℃. The plot of NO conversion and Er composition showed that there was an optimum decomposition rate at ca. 23%(molar fraction). Comparing to the data of conductivity, one can conclude that the rate of NO decomposition increases with the increase in the number of oxygen vacancies. This has been contributed to the similar electronic structure between O2 and NO.

Key words: NO, Er2O3/Bi2O3 catalyst, Temperature programmed surface decomposition

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