| 气相存在下CO在Pd上非线性脱附动力学的研究 |
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| 引用本文： | 辛梅,翟润生,张林虎,郭燮贤.气相存在下CO在Pd上非线性脱附动力学的研究[J].物理化学学报,1995,11(1):38-45. |
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| 作者姓名： | 辛梅 翟润生 张林虎 郭燮贤 |
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| 作者单位： | State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Academia Sinica,Dalian 116023 |
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| 摘 要： | 利用同位素技术测定了预吸附在Pd表面上的CO在单一及混合同位素气氛下的脱附动力学．实验发现CO的脱附动力学是非线性的，在饱和表面上为一级加二级．在易位化学吸附模型和协同交换机理的基础上，对表面吸附物种的动态结构进行了深入分析讨论，并推导出了非线性脱附动力学的解析表达式．
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| 关 键 词： | 吸附 脱附 交换 动力学 |
| 收稿时间： | 1993-12-20 |
| 修稿时间： | 1994-03-08 |
A Study on the Nonlinear Kinetics of CO Desorption under the Gas Ambience on Pd |
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| Xin Mei, Zhai Runsheng, Zhang Linhu,Guo Xiexian.A Study on the Nonlinear Kinetics of CO Desorption under the Gas Ambience on Pd[J].Acta Physico-Chimica Sinica,1995,11(1):38-45. |
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| Authors: | Xin Mei Zhai Runsheng Zhang Linhu Guo Xiexian |
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| Institution: | State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Academia Sinica,Dalian 116023 |
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| Abstract: | The kinetics of CO desorption on Pd(111) has been studied by using isotope switch method under the gas-phase pressures of single isotope and taed ones. The experiments show that the desorption kinetics is non-linear and is first order plus second order on the saturated surface. Based on the delocalized chendsorption model and gas-surface exchange mechanism, the analytic expressions for the desorption kinetics are derived and a dynamic reasoning of the non-linear kinetics has been described in detail. |
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| Keywords: | Adsorption Desorption Exchange Kinetics |
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