Determination of surface areas of solids (ca. 1 cm.2) by a manometric gas-adsorption method

1966 ◽  
pp. 1195 ◽  
Author(s):  
T. J. Adams ◽  
J. N. Sherwood ◽  
F. L. Swinton
Keyword(s):  
Gas Adsorption ◽  
Adsorption Method ◽  
Surface Areas

scholarly journals Determination of porous structure parameters of coal particles to describe thermal conversion processes

2019 ◽  
Vol 109 ◽  
pp. 00101
Author(s):  
Oleksandr Topal ◽  
Iryna Holenko ◽  
Inna Diakun
Keyword(s):  
Porous Structure ◽  
Gas Adsorption ◽  
Thermal Conversion ◽  
Structure Parameters ◽  
Adsorption Method ◽  
Coal Particles ◽  
Different Temperatures ◽  
Char Reactivity ◽  
Determination Of Parameters

The results of determination of parameters of porous structure of coal and char particles are presented. They were determined using gas adsorption method and thermal decomposition of particles in air oxygen. The porous structure parameters allow predicting char reactivity change at different temperatures as well as during conversion in accordance with Random Pore Model (RPM-model).

scholarly journals The Effect of Pore Volume of Hard Coals on Their Susceptibility to Spontaneous Combustion

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Agnieszka Dudzińska
Keyword(s):  
Carbon Dioxide ◽  
Porous Structure ◽  
Pore Volume ◽  
Oxygen Diffusion ◽  
Spontaneous Combustion ◽  
Gas Adsorption ◽  
Experimental Studies ◽  
Carbon Dioxide Adsorption ◽  
Adsorption Method

In this paper the results of the experimental studies on a relationship between pore volume of hard coals and their tendency to spontaneous combustion are presented. Pore volumes were determined by the gas adsorption method and spontaneous combustion tendencies of coals were evaluated by determination of the spontaneous combustion indexesSzaandSza′on the basis of the current Polish standards. An increase in the spontaneous combustion susceptibility of coal occurs in the case of the rise both in micropore volumes and in macropore surfaces. Porosity of coal strongly affects the possibility of oxygen diffusion into the micropores of coal located inside its porous structure. The volume of coal micropores determined on the basis of the carbon dioxide adsorption isotherms can serve as an indicator of a susceptibility of coal to spontaneous combustion.

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