A thermodynamic study on the relationship between metastable equilibrium adsorption states and the metastable-equilibrium coefficient of surface adsorption reactions

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	A thermodynamic study on the relationship between metastable equilibrium adsorption states and the metastable-equilibrium coefficient of surface adsorption reactions
	Ma, ZC; Pan, G; Wei, Y; Chen, H
刊名	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
	2005
卷号	26 期号:3 页码:476-479
关键词	irreversible adsorption MEA theory thermodynamics adsorption equilibrium property metastable adsorption
英文摘要	A given metal ion can form various adsorption states with different energies on inorganic mineral surfaces under the same conditions of temperature, pressure, pH and ionic strength. For example, hydrated zinc ions were adsorbed onto manganite surfaces in two different modes of corner-linkage and edge-linkage. Surface adsorption reactions were generally terminated in various metastable equilibrium adsorption (MEA) states rather than a unique ideal equilibrium state that was predicted from the classical adsorption thermodynamics. Based on the MEA inequality of the MEA theory, we deducted the thermodynamic relationships between the real equilibrium adsorption constant (K-real) and the metastable-equilibrium coefficient (K-me). It showed that K-me is exponentially related to the energy difference between different MEA states. By affecting MEA states, kinetic factors, such as reactant concentrations, can fundamentally influence the real equilibrium adsorption constants and other thermodynamic properties such as adsorption isotherms.
学科主题	Chemistry
研究领域[WOS]	Chemistry
WOS记录号	WOS:000228021800019
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23252]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	Ma, ZC,Pan, G,Wei, Y,et al. A thermodynamic study on the relationship between metastable equilibrium adsorption states and the metastable-equilibrium coefficient of surface adsorption reactions[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2005,26(3):476-479.
APA	Ma, ZC,Pan, G,Wei, Y,&Chen, H.(2005).A thermodynamic study on the relationship between metastable equilibrium adsorption states and the metastable-equilibrium coefficient of surface adsorption reactions.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,26(3),476-479.
MLA	Ma, ZC,et al."A thermodynamic study on the relationship between metastable equilibrium adsorption states and the metastable-equilibrium coefficient of surface adsorption reactions".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 26.3(2005):476-479.