scholarly journals Memory effects and coverage dependence of surface diffusion in a model adsorption system

1999 ◽  
Vol 59 (11) ◽  
pp. 7697-7707 ◽  
Author(s):  
I. Vattulainen ◽  
S. C. Ying ◽  
T. Ala-Nissila ◽  
J. Merikoski
Keyword(s):  
Surface Diffusion ◽  
Memory Effects ◽  
Adsorption System ◽  
Coverage Dependence

scholarly journals Adsorption Characteristics of Humic Acids by Granular Activated Carbon

1997 ◽  
Vol 15 (7) ◽  
pp. 507-516 ◽  
Author(s):  
S.H. Lin ◽  
C.M. Lin
Keyword(s):  
Activated Carbon ◽  
Humic Acid ◽  
Surface Diffusion ◽  
Humic Acids ◽  
Granular Activated Carbon ◽  
Model Parameters ◽  
Adsorption System ◽  
Transfer Resistance ◽  
Liquid Phase Mass Transfer ◽  
Continuous Adsorption

The adsorption of humic acids on granular activated carbon has been investigated. A commerically available humic acid and that extracted from the bottom sludge of a dam were employed in the studies. Both batch and continuous adsorption experiments were conducted. A simplified competitive adsorption model in conjunction with the Freundlich isotherm was employed to represent the batch multicomponent adsorption system and a homogeneous surface diffusion model utilized to describe the continuous adsorption system in a packed-bed column. The model parameters were obtained by best fit of the models to the experimental adsorption data. The results indicated that the liquid-phase mass-transfer resistance, surface diffusion coefficient and the amount of adsorption on the activated carbon decreased with increasing molecular weight of the humic acid. It was also found that the adsorption of humic acid on the activated carbon was primarily a surface diffusion-controlled process.

Coverage dependence of the surface diffusion coefficient for hydrogen on Ru(001)

1987 ◽  
Vol 191 (1-2) ◽  
pp. 108-120 ◽  
Author(s):  
C.H. Mak ◽  
J.L. Brand ◽  
B.G. Koehler ◽  
S.M. George
Keyword(s):  
Diffusion Coefficient ◽  
Surface Diffusion ◽  
Surface Diffusion Coefficient ◽  
Coverage Dependence

Coverage dependence of the surface diffusion coefficient for hydrogen on Ru(001)

1987 ◽  
Vol 191 (1-2) ◽  
pp. A514
Author(s):  
C.H. Mak ◽  
J.L. Brand ◽  
B.G. Koehler ◽  
S.M. George
Keyword(s):  
Diffusion Coefficient ◽  
Surface Diffusion ◽  
Surface Diffusion Coefficient ◽  
Coverage Dependence

On the coverage dependence of the surface diffusion constant

1980 ◽  
Vol 99 (3) ◽  
pp. L429-L433
Author(s):  
Hiromu Asada ◽  
Makihiko Masuda
Keyword(s):  
Surface Diffusion ◽  
Diffusion Constant ◽  
Coverage Dependence

Surface Diffusion of Pb on (100) Cu: Coverage Dependence and Influence of Ordered-Phase Formation

1993 ◽  
Vol 24 (9) ◽  
pp. 767-772 ◽  
Author(s):  
C Cohen ◽  
Y Girard ◽  
P Leroux-Hugon ◽  
A L'Hoir ◽  
J Moulin ◽  
...  
Keyword(s):  
Surface Diffusion ◽  
Phase Formation ◽  
Coverage Dependence
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