物理化学学报2017，Vol.33Issue(10)：1998-2003,6.DOI:10.3866/PKU.WHXB201705181
一种评估阳离子交换吸附活化能的方法
An Approach to Estimate the Activation Energy of Cation Exchange Adsorption
摘要
Abstract
Ion exchange adsorption is an important physicochemical process at solid/liquid interfaces.In this study,an approach was established to estimate the activation energy of cation exchange reaction on the charged surface,considering Hofmeister effects.The experimental results showed that Hofmeister effects strongly affect the ionic adsorption equilibrium on the charged particle surface.The position of the adsorbed counterion in the diffuse layer was predicted according to the established model,and the ion exchange activation energies for different bivalent cations were estimated via the cation exchange experiments.The activation energy decreases with increasing ion concentration,and the adsorption saturation of cations is a function of the activation energy at different concentrations.The established model of cation exchange adsorption in the present study has universal applicability in solid/liquid interface reactions.关键词
离子特异性效应/离子吸附/带电表面/活化能Key words
Specific ion effect/Ion adsorption/Charged surface/Activation energy分类
化学化工引用本文复制引用
李嫣婷,刘新敏,田锐,丁武泉,修维宁,唐玲玲,张静,李航..一种评估阳离子交换吸附活化能的方法[J].物理化学学报,2017,33(10):1998-2003,6.基金项目
The project was supported by the National Natural Science Foundation of China (41530855,41501240,41501241),Natural Science Foundation Project of CQ CSTC,China (cstc2015jcyjA80015),Young Talent Project of China Association for Science and Technology (2015-2017),Undergraduate Innovation Fund of Southwest University,China (20152402009) and "Guangjiong" Projects of Southwest University,China (2016005).国家自然科学基金(41530855,41501240,41501241),重庆市自然科学基金(cstc2015jcyA80015),中国科协青年人才托举工程(2015-2017),西南大学本科生创新基金(20152402009)和西南大学“光炯”创新基金(2016005)资助项目 （41530855,41501240,41501241）
