CJCU

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (S1): 240.

• Articles • Previous Articles     Next Articles

The Effect of Adsorbate Molecules on the Particle Diffusion of the Adsorption Resin(Ⅰ)

WANG Chun-Hong, Shi Rong-Fu, WEN Zhen-Zhen, Shi Zuo-Qing, HE Bing-Lin   

  1. The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
  • Received:2001-07-22 Online:2001-12-31 Published:2001-12-31

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Abstract:

The adsorption dynamics for the several adsorbate moleculars with different size of the macroporous adsorbent based on polystyrene was studied. When the adsorption rate was governed by the particle difTusioa process, it is considered that the ratio of the molecular size of adsorbates to the pore diameter not only influenced the adsorption rate, but also influenced the rate-determination step of particle diffusion. Increasing with the molecular weight of the adsorbates, the rate-determination step of particle diffusion transferred from surface diffusion to pore diffusion. At last, diffusion mass-transfer parameters were measured based on the related diffusion equations.

Key words: Adsorption Dynamics, Particle Diffusion, Surface Diffusion, Pore Dififusion

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