Steam-carbon gasification catalyzed by calcium: Assessment of the porous structure of active carbons from plum stones and synthetic active carbons

Adsorption ◽  
1997 ◽  
Vol 3 (3) ◽  
pp. 233-242 ◽  
Author(s):  
A. Dąbrowski ◽  
Z. Fekner ◽  
R. Leboda ◽  
J. Goworek
Keyword(s):  
Porous Structure ◽  
Active Carbons ◽  
Carbon Gasification ◽  
Synthetic Active Carbons

scholarly journals Porous Structure and Adsorption Properties of Synthetic Active Carbons

1995 ◽  
Vol 12 (4) ◽  
pp. 267-277 ◽  
Author(s):  
A.M. Puziy ◽  
R. Leboda ◽  
V.I. Bogillo ◽  
V.P. Shkilev ◽  
A. Lodyga
Keyword(s):  
Porous Structure ◽  
Nitrogen Adsorption ◽  
Adsorption Properties ◽  
Active Carbons ◽  
Regularization Technique ◽  
Synthetic Active Carbons ◽  
Nitrogen Adsorption Isotherms ◽  
Bimodal Porous Structure ◽  
Micropore Size

The porous structures of synthetic active carbons have been examined in detail on the basis of nitrogen adsorption isotherms at 77 K using the αS method, the Dubinin–Stoeckli approach and the regularization technique. Analysis of the porosity of synthetic active carbons shows that carbons obtained under identical conditions have dissimilar adsorption properties depending on the size of the granule. The application of the Dubinin–Stoeckli equation for the characterization of strongly heterogeneous carbons overestimates the maximum amount adsorbed in the micropores. In contrast to the Dubinin–Stoeckli equation, the regularization method gives a two-peak micropore size distribution and enables adsorbents with a bimodal porous structure to be estimated.

Methods of Obtaining and Physicochemical Properties of Modified Carbonaceous Sorbents

2021 ◽  
Vol 1045 ◽  
pp. 117-126
Author(s):  
Olena Svietkina ◽  
Olga Netiaga ◽  
Hanna Tarasova ◽  
Ievgenii Ustymenko ◽  
Edgar Caseres Cabana
Keyword(s):  
Physicochemical Properties ◽  
Porous Structure ◽  
Radiation Resistance ◽  
Adsorption Process ◽  
Chemical Nature ◽  
Carbon Adsorbents ◽  
Electrophysical Properties ◽  
Active Carbons ◽  
Carbonaceous Sorbents ◽  
Peculiar Nature

The variety of practical problems solved in recent years with the help of sorption methods requires expanding the range of used adsorbents. Active carbons are very promising porous adsorbents. Due to a whole complex of valuable properties of a highly developed porous structure, a variety of the chemical nature of the surface, special electrophysical properties, as well as chemical, thermal and radiation resistance, various active carbons are widely used for the absorption of gaseous and dissolved substances. The peculiar nature of carbon adsorbents contributes to the fact that solutes on coal can be adsorbed by completely different; mechanisms, their sorption may be due to the different nature of the forces involved in the adsorption process. The purpose of the work is to obtain multipurpose sorbents; to study methods of modification of carbonaceous sorbents from ash waste, as well as their physicochemical properties

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