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Gibbs吸附等温式■是表面化学的一个重要公式,主要用于溶液的表面吸附,也用于两个溶剂互不相溶的溶液之间。但它是用热力学原理推出的,故原则上能用于任何两个平衡相之间,是具有普遍意义的吸附公式。通过Γ_i和Γ_i~1可以定量地说明什么是正吸附和负吸附。Gibbs公式表示组分i的吸附量与表面张力σ随体相中i的浓度的变化
Gibbs Adsorption Isotherm ■ is an important formula for surface chemistry. It is mainly used for surface adsorption of solutions and also for solutions where two solvents are immiscible. But it is based on the principle of thermodynamics, so it can be used in principle between any two equilibrium phases. It is a universal adsorption formula. By Γ_i and Γ_i ~ 1 can be quantitatively explain what is positive and negative adsorption. The Gibbs formula shows the change of the adsorption amount and the surface tension σ of component i with the concentration of i in the bulk phase