Estimation of surface diffusion coefficient in liquid phase adsorption | Zendy

Miyabe Kanji | Zendy; Takeuchi Shigeya | Zendy

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Estimation of surface diffusion coefficient in liquid phase adsorption

Author(s) -

Miyabe Kanji,

Takeuchi Shigeya

Publication year - 1998

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.5450760505

Subject(s) - adsorption , thermal diffusivity , diffusion , thermodynamics , liquid phase , phase (matter) , range (aeronautics) , mass diffusivity , surface (topology) , surface diffusion , chemistry , constant (computer programming) , materials science , analytical chemistry (journal) , chromatography , physics , mathematics , organic chemistry , geometry , computer science , composite material , programming language

An estimation procedure of surface diffusion coefficient, D s , in liquid phase adsorption was proposed. The procedure is based on a restricted diffusion model, in which D s is correlated with molecular diffusivity by considering a restriction energy due to an adsorptive interaction between adsorbates and adsorbents. In some adsorption systems, D s of different adsorbates could be calculated with an error less than about 50% from only one datum of each adsorption equilibrium constant. Irrespective of temperature, the procedure, can be applied for the estimation of D s even in a wide range of D s of about 4 orders of magnitude.

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