摘要
研究了水合五氧化二锑在稀硝酸溶液中对锶的吸附热力学特性,在293～323 K温度范围内水合五氧化二锑对锶的平衡吸附数据符合Freundlich吸附等温方程。对等量吸附焓、自由能和吸附熵的计算表明,吸附是一吸热过程且吸附能自发进行,交换吸附过程是物理与化学吸附共同作用的结果。
Adsorption thermodynamics characteristics of strontium onto hydrated antimony pentoxide in diluted nitric acid had been studied in this paper. Equilibrium data for adsorption of strontium by hydrated antimony pentoxide adsorbent within the temperature range of 293- 323K were obtained with the Freundlich-type isotherm equations. Estimations of adsorptive enthalpy, free energy, and entropy of adsorption were calculated. Results showed that adsorption was an endothermic process, and could proceed spontaneously. Exchange adsorp- tion process was the results from interaction between physical adsorption and chemical adsorption.
出处
《化工技术与开发》
CAS
2010年第6期8-10,共3页
Technology & Development of Chemical Industry
关键词
水合五氧化二锑
锶
吸附热力学
hydrated antimony pentoxide
strontium
adsorption thermodynamic
