Estimation of micropore size distribution in active carbons from adsorption isotherms of water vapor

2007 ◽  
Vol 56 (1) ◽  
pp. 40-44 ◽  
Author(s):  
V. V. Gur’yanov ◽  
G. A. Petukhova ◽  
L. A. Dubinina
Keyword(s):  
Water Vapor ◽  
Size Distribution ◽  
Adsorption Isotherms ◽  
Active Carbons ◽  
Micropore Size Distribution ◽  
Micropore Size

scholarly journals Influence of the Pore Geometry on the Micropore Size Distribution Function of Active Carbons

1997 ◽  
Vol 15 (8) ◽  
pp. 571-581 ◽  
Author(s):  
J. Choma ◽  
M. Jaroniec
Keyword(s):  
Distribution Function ◽  
Size Distribution ◽  
Density Functional ◽  
Simple Procedure ◽  
Size Distribution Function ◽  
Pore Geometry ◽  
Geometrical Shape ◽  
Active Carbons ◽  
Micropore Size Distribution ◽  
Micropore Size

A simple procedure for the evaluation of the micropore size distribution function of active carbons from the experimental adsorption isotherm of a single gas is discussed. In this method, the adsorption potential distribution and the dependencies of this potential on the micropore size for three different models, i.e. slit-like, cylindrical and spherical, are utilized. It was shown that the geometrical shape of pores may have a substantial influence on the micropore size distribution. While the micropore size distributions calculated assuming slit-like and cylindrical pore geometries are similar, spherical pore geometry leads to a substantially different distribution. A qualitative agreement was found between the micropore size distribution obtained by the current procedure, which is equivalent to the Horvath–Kawazoe method, and that evaluated by the density functional theory (DFT) method.

scholarly journals A Test of the Horvath–Kawazoe Method by Monte Carlo Simulation

1997 ◽  
Vol 15 (1) ◽  
pp. 15-24 ◽  
Author(s):  
D. Valladares ◽  
G. Zgrablich
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Pore Size ◽  
Size Distribution ◽  
Adsorption Isotherms ◽  
Nitrogen Adsorption ◽  
Size Distributions ◽  
Micropore Size Distribution ◽  
Nitrogen Adsorption Isotherms ◽  
Micropore Size

The Horvath–Kawazoe (H–K) method, which is frequently used to obtain the micropore size distributions of microporous materials, has been tested by Monte Carlo Simulation of nitrogen adsorption isotherms. The results show that the H–K method only gives good results when the microporosity is confined to a pore size lower than approximately 13 Å. In this region, although the method can predict the micropore size distribution peak with acceptable precision, it fails for wider distributions.

Bimodal micropore size distribution in active carbons

1993 ◽  
Vol 42 (3) ◽  
pp. 424-427 ◽  
Author(s):  
R. Sh. Vartapetyan ◽  
A. M. Voloshchuk ◽  
N. A. Limonov ◽  
Yu. A. Romanov
Keyword(s):  
Size Distribution ◽  
Active Carbons ◽  
Micropore Size Distribution ◽  
Micropore Size

Probing carbon micropore size distribution by nucleus independent chemical shift

Carbon ◽  
2014 ◽  
Vol 77 ◽  
pp. 1132-1139 ◽  
Author(s):  
Yun-Zhao Xing ◽  
Zhi-Xiang Luo ◽  
Alfred Kleinhammes ◽  
Yue Wu
Keyword(s):  
Chemical Shift ◽  
Size Distribution ◽  
Micropore Size Distribution ◽  
Nucleus Independent Chemical Shift ◽  
Micropore Size ◽  
Carbon Micropore
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