dc.contributor.author | Gürkan R. | |
dc.contributor.author | Ceylan H. | |
dc.contributor.author | Şahan T. | |
dc.contributor.author | Savran A. | |
dc.contributor.author | Kubilay Ş. | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:12:39Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:12:39Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 0929-5607 | |
dc.identifier.uri | https://dx.doi.org/10.1007/s10450-005-5646-8 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/4433 | |
dc.description.abstract | Inverse gas chromatography has been used to evaluate the adsorption parameters (?H a, ?H st, ?S a and ?G a) of some probe molecules, each representing a class of organic (n-hexane, cyclohexane, benzene, n-octane, 1-octene and isooctane) on bentonite and chemically treated-bentonites. The adsorption parameters of the probes on the bentonite samples were determined in infinite dilution region. Adsorption of the organic species was investigated in the temperature range of 200-275°C, using a flame ionization detector, and nitrogen as a carrier gas. The net retention volumes (V n ) of the probes were determined by the help of the retention times (t R ) observed on gas chromatograms for each probe. Injection was made at least three times for each probe, obtaining reproducible results of ± 0.5%. It was found that benzene exhibits more negative ?H than for n-hexane and cyclohexane on all of the adsorbents. In addition, it was found that 1-octene exhibits more negative ?H than for n-octane and isooctane on the chemically treated-bentonites, whereas n-octane exhibits more negative ?H than for 1-octene and isooctane on the natural bentonite. Also, interactions of benzene with the natural- and chemically treated-bentonites were found to be stronger than those of n-hexane and cyclohexane with the same carbon number. Again, interactions of the 1-octene with the chemically treated-bentonites were found to be stronger those of n-octane and isooctane with the same carbon number. On the contrary, interactions of n-octane with the untreated-bentonite were found to be stronger than those of 1-octene and isooctane. © 2005 Springer Science + Business Media, Inc. | en_US |
dc.description.sponsorship | This study was partially supported by the Research Fund of Yüzüncü Yı l University, Van, Turkey. The authors would like to thank their colleagues for their constant support and helps about the experimental studies. | en_US |
dc.language.iso | eng | en_US |
dc.relation.isversionof | 10.1007/s10450-005-5646-8 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Adsorption | en_US |
dc.subject | Bentonite | en_US |
dc.subject | Hydrocarbons | en_US |
dc.subject | Inverse gas chromatography | en_US |
dc.subject | Thermodynamic parameters | en_US |
dc.title | Evaluation of the thermodynamic parameters for the adsorption of some hydrocarbons on chemically treated-bentonites by inverse gas chromatography | en_US |
dc.type | article | en_US |
dc.relation.journal | Adsorption | en_US |
dc.contributor.department | Gürkan, R., Department of Chemistry, University of Cumhuriyet, Science and Arts of Faculty, 58140 Sivas, Turkey -- Ceylan, H., Department of Chemistry, University of Yüzüncü Yil, Science and Arts of Faculty, 65080 Van, Turkey -- Şahan, T., Department of Chemistry, University of Yüzüncü Yil, Science and Arts of Faculty, 65080 Van, Turkey -- Savran, A., Department of Chemistry, University of Yüzüncü Yil, Science and Arts of Faculty, 65080 Van, Turkey -- Kubilay, Ş., Department of Chemistry, University of Yüzüncü Yil, Science and Arts of Faculty, 65080 Van, Turkey | en_US |
dc.identifier.volume | 11 | en_US |
dc.identifier.issue | 05.Jun | en_US |
dc.identifier.endpage | 612 | en_US |
dc.identifier.startpage | 603 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |