The adsorption properties of sepiolite from Andrici, Serbia, were studied by inverse gas chromatography at zero and finite surface coverage between 483 and 513 K. The thermodynamic parameters (free energy, enthalpy, entropy) of adsorption, as well as the dispersive and specific components of the free energy of adsorption and the acid/base of the solid were calculated from the IGC data at zero coverage. The K-D/K-A ratio indicated basis character. The adsorption isotherms were used to estimate the specific surface area, isosteric heat of adsorption and the adsorption energy distribution for the adsorption of organic molecules.
Keywords:
Inverse gas chromatography / Sepiolite / Adsorption / Acid-base interactions
Source:
Applied Clay Science, 2009, 43, 1, 41-48
Publisher:
Elsevier Science Bv, Amsterdam
Funding / projects:
Ministry of Science Republic of SerbiaMinistry of Science, Serbia [142070B]
TY - JOUR
AU - Lazarević, Slavica
AU - Radovanović, Željko
AU - Veljović, Đorđe
AU - Onjia, Antonije
AU - Janaćković, Đorđe
AU - Petrović, Rada
PY - 2009
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1472
AB - The adsorption properties of sepiolite from Andrici, Serbia, were studied by inverse gas chromatography at zero and finite surface coverage between 483 and 513 K. The thermodynamic parameters (free energy, enthalpy, entropy) of adsorption, as well as the dispersive and specific components of the free energy of adsorption and the acid/base of the solid were calculated from the IGC data at zero coverage. The K-D/K-A ratio indicated basis character. The adsorption isotherms were used to estimate the specific surface area, isosteric heat of adsorption and the adsorption energy distribution for the adsorption of organic molecules.
PB - Elsevier Science Bv, Amsterdam
T2 - Applied Clay Science
T1 - Characterization of sepiolite by inverse gas chromatography at infinite and finite surface coverage
EP - 48
IS - 1
SP - 41
VL - 43
DO - 10.1016/j.clay.2008.07.013
ER -
@article{
author = "Lazarević, Slavica and Radovanović, Željko and Veljović, Đorđe and Onjia, Antonije and Janaćković, Đorđe and Petrović, Rada",
year = "2009",
abstract = "The adsorption properties of sepiolite from Andrici, Serbia, were studied by inverse gas chromatography at zero and finite surface coverage between 483 and 513 K. The thermodynamic parameters (free energy, enthalpy, entropy) of adsorption, as well as the dispersive and specific components of the free energy of adsorption and the acid/base of the solid were calculated from the IGC data at zero coverage. The K-D/K-A ratio indicated basis character. The adsorption isotherms were used to estimate the specific surface area, isosteric heat of adsorption and the adsorption energy distribution for the adsorption of organic molecules.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Clay Science",
title = "Characterization of sepiolite by inverse gas chromatography at infinite and finite surface coverage",
pages = "48-41",
number = "1",
volume = "43",
doi = "10.1016/j.clay.2008.07.013"
}
Lazarević, S., Radovanović, Ž., Veljović, Đ., Onjia, A., Janaćković, Đ.,& Petrović, R.. (2009). Characterization of sepiolite by inverse gas chromatography at infinite and finite surface coverage. in Applied Clay Science
Elsevier Science Bv, Amsterdam., 43(1), 41-48.
https://doi.org/10.1016/j.clay.2008.07.013
Lazarević S, Radovanović Ž, Veljović Đ, Onjia A, Janaćković Đ, Petrović R. Characterization of sepiolite by inverse gas chromatography at infinite and finite surface coverage. in Applied Clay Science. 2009;43(1):41-48.
doi:10.1016/j.clay.2008.07.013 .
Lazarević, Slavica, Radovanović, Željko, Veljović, Đorđe, Onjia, Antonije, Janaćković, Đorđe, Petrović, Rada, "Characterization of sepiolite by inverse gas chromatography at infinite and finite surface coverage" in Applied Clay Science, 43, no. 1 (2009):41-48,
https://doi.org/10.1016/j.clay.2008.07.013 . .
