Open AccessMicroporous Adsorbents with Limiting Development of Micropores
Author(s) -
M. M. Dubinin,
O. Kadlec
Publication year - 1987
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/0263617487004001-204
Subject(s) - adsorption , microporous material , chemistry , benzene , volume (thermodynamics) , limiting , carbon fibers , thermodynamics , chromatography , chemical engineering , analytical chemistry (journal) , organic chemistry , materials science , composite material , physics , composite number , engineering , mechanical engineering
The adsorption properties for benzene vapors and the pore structure of carbon adsorbents with a practically-limiting macropore volume have been investigated. The salient characteristic of the adsorbents studied was the position of the distribution curves of the micropore volume, whose maxima for the slit-shaped pore model corresponded to halfwidths of 1.2 to 1.4 nm and the micropore volume to 1.5 cm3 g–1. The difference in parameters of the Dubinin-Stoechli adsorption equation was only quantitative. The adsorption isotherms are very closely described by the DS adsorption equation in a broad range of equilibrium relative pressures and temperatures within 293–353 K. The question of the upper limit of micropore size in carbon adsorbents is also discussed.