Inverse gas chromatography of chromia. Part II. Finite surface coverage
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.
Keywords:
inverse gas chromatography / chromia / Adsorption / organics / isotherms / isosteric heatSource:
Journal of the Serbian Chemical Society, 2002, 67, 3, 165-178
DOI: 10.2298/JSC0203165O
ISSN: 0352-5139
WoS: 000174611800003
Scopus: 2-s2.0-0036003608
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VinčaTY - JOUR AU - Onjia, Antonije E. AU - Milonjić, Slobodan K. AU - Rajaković, Ljubinka V. PY - 2002 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2506 AB - 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. T2 - Journal of the Serbian Chemical Society T1 - Inverse gas chromatography of chromia. Part II. Finite surface coverage VL - 67 IS - 3 SP - 165 EP - 178 DO - 10.2298/JSC0203165O ER -
@article{ author = "Onjia, Antonije E. and Milonjić, Slobodan K. and Rajaković, Ljubinka V.", year = "2002", 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.", journal = "Journal of the Serbian Chemical Society", title = "Inverse gas chromatography of chromia. Part II. Finite surface coverage", volume = "67", number = "3", pages = "165-178", doi = "10.2298/JSC0203165O" }
Onjia, A. E., Milonjić, S. K.,& Rajaković, L. V.. (2002). Inverse gas chromatography of chromia. Part II. Finite surface coverage. in Journal of the Serbian Chemical Society, 67(3), 165-178. https://doi.org/10.2298/JSC0203165O
Onjia AE, Milonjić SK, Rajaković LV. Inverse gas chromatography of chromia. Part II. Finite surface coverage. in Journal of the Serbian Chemical Society. 2002;67(3):165-178. doi:10.2298/JSC0203165O .
Onjia, Antonije E., Milonjić, Slobodan K., Rajaković, Ljubinka V., "Inverse gas chromatography of chromia. Part II. Finite surface coverage" in Journal of the Serbian Chemical Society, 67, no. 3 (2002):165-178, https://doi.org/10.2298/JSC0203165O . .