Porous Texture Characterization of Coals and Chars
- 1 March 1985
- journal article
- research article
- Published by SAGE Publications in Adsorption Science & Technology
- Vol. 2 (1) , 31-38
- https://doi.org/10.1177/026361748500200104
Abstract
The chemical and physical characteristics of six Spanish coals and their corresponding chars were studied. Apparent surface area, density and porosity data were determined. The apparent surface areas obtained by CO2 adsorption at 298 K and 273 K are much higher than those obtained by N2 adsorption at 77 K. This indicates that a fraction of the micropropores of the samples is not accessible to the N2 molecules. The apparent surface area and porosity of the coal samples were studied as a function of the coal rank. The changes in the porous texture of the coal samples when they are thermally converted to chars were analysed.Keywords
This publication has 19 references indexed in Scilit:
- Free radicals in coals and coal conversion. 4. Investigation of the free radicals in selected macerals upon liquefactionFuel, 1981
- Formation and stability of mesophase during coal hydrogenation. 1. Formation of mesophaseFuel, 1978
- Dependence of coal liquefaction behaviour on coal characteristics. 3. Statistical correlations of conversion in coal-tetralin interactionsFuel, 1978
- Nature of the porosity in American coalsFuel, 1972
- Molecular sieve characteristics of slightly activated anthraciteFuel, 1972
- Surface areas of coals from carbon dioxide adsorption at 298°KFuel, 1970
- A contribution to the structure of coals from x-ray diffraction studiesPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1960
- Adsorption of Helium on Carbons: Influence on Measurement of DensityNature, 1960
- X-ray scattering from coalsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954
- Anomalous Adsorption of Nitrogen at 90° K.Nature, 1952