濃度做變量的Gibbs吸附等溫式

Gibbs Adsorption Isotherm for Using Concentration as Variable

張世民(Shi-Ming Zhang)

《化學》 61卷2期 (2003/06) Pp. 325-332

https://doi.org/10.6623/chem.2003034

摘要

導出了多組分體系的Gibbs吸附等溫式在使用濃度而不是使用化學勢做獨立變數下的形式，方法深入淺出。對於以平面分界的由α和β兩相構成的多組分體系，如果以組分k為溶劑的β相是稀溶液，且c_k^α ＜＜ c_k^β，則對於滿足條件c_i^α＜＜C_i^β的那些組分，其介面Gibbs吸附等溫式可簡化為(方程式略)(介面置於k組分的淨吸附為0處)。液相為稀溶液的具有中、低壓力的氣～液介面某些組分的吸附和兩相物質互不相溶的固～液或液～液介面各組分的吸附能滿足此吸附式的使用條件。

關鍵字

吸附等溫式 ； 吸附

並列摘要

Gibbs adsorption isotherm for using concentration as independent variable is educed and the profound things are explained in a simple way. For the systems of heterogeneous substances with α and two phases as well as plane interface, if β phase is dilute solution and component k is solvent as well as c_k^α＜＜c_k^β, Gibbs adsorption isotherm of the components i meeting the condition c_i^α＜＜c_i^β can be showed as (The equation is abbreviated) (the dividing surface is placed where the adsorption of component k is zero). The adsorption of some components on the vapor-liquid interface of dilute solution with moderate or low pressure can meet the application condition of this adsorption isotherm. The adsorption of various components on the solid-liquid and liquid-liquid interface of dilute solution can also meet the application condition of this adsorption isotherm if various components of one phase are virtually insoluble in another phase.

並列關鍵字

Adsorption Isotherm ； Adsorption