Приказ основних података о документу
Inverse gas chromatrography of chromia. Part II. Finite surface coverage
Inverzna gasna hromatografija na hrom(III)-oksidu. Deo II
dc.creator | Onjia, Antonije | |
dc.creator | Milonjić, Slobodan K. | |
dc.creator | Rajaković, Ljubinka V. | |
dc.date.accessioned | 2021-03-10T10:03:59Z | |
dc.date.available | 2021-03-10T10:03:59Z | |
dc.date.issued | 2002 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/487 | |
dc.description.abstract | The interactions of n-hexane, benzene, chloroform, and tetrahydrofuran with dried (amorphous) chromia (I) and chromia heated at 1073 K (crystalline) (II), both obtained from a colloidal dispersion, and a commercially available chromia (III) were studied by inverse gas chromatography (IGC) under finite surface coverage conditions. The isotherms, in the temperature range 383 – 423 K, were used to estimate the surface area, the adsorption energy distribution, the isosteric heat of adsorption, and the spreading pressure on the surfaces of the solids. The uniformly reduced adsorption ability of the heated chromia was attributed to the dehydroxylation of the surface at the higher temperatures. Both solids showed an increased affinity toward chloroform molecules, as a result of strong acid-base interaction. | en |
dc.description.abstract | Ispitivane su interakcije n-heksana, hloroforma, tetrahidrofurana i benzena sa površinama čvrste faze laboratorijski dobijenog koloidnog hrom(III)-oksida i komercijalnog hrom(III)-oksida, metodom inverzne gasne hromatografije (IGC) pri konačnoj prekrivenosti. Adsorpcione izoterme su dobijene za dva uzorka čvrste faze dobijene iz sola hrom(III)-oksida, sušenu čvrstu fazu sola (423 K, uzorak I), amorfne, i žarenu (1073 K, uzorak II) kristalne strukture, kao i za komercijalni hrom(III)-oksid kristalne strukture, u temperaturnom opsegu 383 – 423 K. Iz dobijenih izotermi izračunate su: vrednosti specifičnih površina, funkcije raspodele energije na površini, izosterič ne toplote adsorpcije i pritisak adsorbata na površinama. Značajno manja adsorpciona moć uzorka II pripisana je dehidroksilaciji površine u toku prethodnog tretmana na visokim temperaturama. U oba slučaja čvrsta površina pokazuje pojačani afinitet prema hloroformu, usled uspostavljanja snažnih kiselo-baznih interakcija. | sr |
dc.publisher | Serbian Chemical Society, Belgrade | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Journal of the Serbian Chemical Society | |
dc.subject | inverse gas chromatography | en |
dc.subject | chromia | en |
dc.subject | adsorption | en |
dc.subject | organics | en |
dc.subject | isotherms | en |
dc.subject | isosteric heat | en |
dc.title | Inverse gas chromatrography of chromia. Part II. Finite surface coverage | en |
dc.title | Inverzna gasna hromatografija na hrom(III)-oksidu. Deo II | sr |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 178 | |
dc.citation.issue | 3 | |
dc.citation.other | 67(3): 165-178 | |
dc.citation.rank | M23 | |
dc.citation.spage | 165 | |
dc.citation.volume | 67 | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/13203/0352-51390203165O.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_technorep_487 | |
dc.identifier.scopus | 2-s2.0-0036003608 | |
dc.identifier.wos | 000174611800003 | |
dc.type.version | publishedVersion |