| NO在Er2O3/Bi2O3催化剂上的程序升温分解 |
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| 引用本文： | 张伟德,李基涛,古萍英,万惠霖,区泽棠.NO在Er2O3/Bi2O3催化剂上的程序升温分解[J].高等学校化学学报,1998,19(6):961-963. |
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| 作者姓名： | 张伟德 李基涛 古萍英 万惠霖 区泽棠 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，香港研究基金会资助课题，29623001，，， |
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| 摘 要： | NOx是造成大气污染的化学物质之一,因此,消除NOx是环境保护的一项重要任务,目前比较成熟的消除NOx工艺是用氨为还原剂和V2O5/TiO2为催化剂的选择催化还原(SCR)法1],但其成本过高.
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| 关 键 词： | NO Er2O3／Bi2O3催化剂 程序升温表面分解 |
| 收稿时间： | 1997-12-30 |
Temperature Programmed Decomposition of NO over Er2O3/Bi2O3 Catalysts |
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| ZHANG Wei-De,LI Ji-Tao,GU Ping-Ying,WAN Hui-Lin,AU Chak-Tong.Temperature Programmed Decomposition of NO over Er2O3/Bi2O3 Catalysts[J].Chemical Research In Chinese Universities,1998,19(6):961-963. |
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| Authors: | ZHANG Wei-De LI Ji-Tao GU Ping-Ying WAN Hui-Lin AU Chak-Tong |
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| Institution: | 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 |
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| 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. |
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| Keywords: | NO Er 2O 3/Bi 2O 3 catalyst Temperature programmed surface decomposition |
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