Adsorption of Tiron onto alumina
Apstrakt
It has been shown recently that small organic molecules, used as dispersants in the colloidal processing of ceramic powders to adjust the forces between the particles, are quite efficient in preparing aqueous suspensions of high solid loadings and low viscosity. One of them is 4,5-dihydroxy-1,3-benzenedisulfonic acid, disodium salt monchydrate, ((OH)(2)C6H2(SO3Na)(2).H2O), commercially known as Tiron. The adsorption of Tiron, as a function of its concentration and solution pH, onto alumina was investigated by the solution depletion method, applying UV spectrophotometry. KNO3 (10(-2) Mol/l) was used as the background electrolyte. The obtained results indicate an increase in the amount of adsorbed Tiron with its increasing concentration. The maximum adsorption was recorded at p approximate to 7 7 when the Tiron molecule was uncharged, i.e. undissociated (pKa(1)=7.6). The experimental data were fitted with different adsorption isotherm models. The maximum amount of Tiron adsorbed, as well... as the constants of adsorption process were calculated.
Ključne reči:
Adsorption / alumina / isotherms / tironIzvor:
Materials Science Forum, 2005, 494, 399-404Napomena:
- Current Research in Advanced Materials and Processes, 6th Conference of the Yugoslav-Materials-Research-Society, Sep 13-17, 2004, Herceg Novi, Montenegro
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Rocen, JJ AU - Čerović, Ljiljana S. AU - Milonjić, Slobodan K. PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6534 AB - It has been shown recently that small organic molecules, used as dispersants in the colloidal processing of ceramic powders to adjust the forces between the particles, are quite efficient in preparing aqueous suspensions of high solid loadings and low viscosity. One of them is 4,5-dihydroxy-1,3-benzenedisulfonic acid, disodium salt monchydrate, ((OH)(2)C6H2(SO3Na)(2).H2O), commercially known as Tiron. The adsorption of Tiron, as a function of its concentration and solution pH, onto alumina was investigated by the solution depletion method, applying UV spectrophotometry. KNO3 (10(-2) Mol/l) was used as the background electrolyte. The obtained results indicate an increase in the amount of adsorbed Tiron with its increasing concentration. The maximum adsorption was recorded at p approximate to 7 7 when the Tiron molecule was uncharged, i.e. undissociated (pKa(1)=7.6). The experimental data were fitted with different adsorption isotherm models. The maximum amount of Tiron adsorbed, as well as the constants of adsorption process were calculated. T2 - Materials Science Forum T1 - Adsorption of Tiron onto alumina VL - 494 SP - 399 EP - 404 UR - https://hdl.handle.net/21.15107/rcub_vinar_6534 ER -
@article{ author = "Rocen, JJ and Čerović, Ljiljana S. and Milonjić, Slobodan K.", year = "2005", abstract = "It has been shown recently that small organic molecules, used as dispersants in the colloidal processing of ceramic powders to adjust the forces between the particles, are quite efficient in preparing aqueous suspensions of high solid loadings and low viscosity. One of them is 4,5-dihydroxy-1,3-benzenedisulfonic acid, disodium salt monchydrate, ((OH)(2)C6H2(SO3Na)(2).H2O), commercially known as Tiron. The adsorption of Tiron, as a function of its concentration and solution pH, onto alumina was investigated by the solution depletion method, applying UV spectrophotometry. KNO3 (10(-2) Mol/l) was used as the background electrolyte. The obtained results indicate an increase in the amount of adsorbed Tiron with its increasing concentration. The maximum adsorption was recorded at p approximate to 7 7 when the Tiron molecule was uncharged, i.e. undissociated (pKa(1)=7.6). The experimental data were fitted with different adsorption isotherm models. The maximum amount of Tiron adsorbed, as well as the constants of adsorption process were calculated.", journal = "Materials Science Forum", title = "Adsorption of Tiron onto alumina", volume = "494", pages = "399-404", url = "https://hdl.handle.net/21.15107/rcub_vinar_6534" }
Rocen, J., Čerović, L. S.,& Milonjić, S. K.. (2005). Adsorption of Tiron onto alumina. in Materials Science Forum, 494, 399-404. https://hdl.handle.net/21.15107/rcub_vinar_6534
Rocen J, Čerović LS, Milonjić SK. Adsorption of Tiron onto alumina. in Materials Science Forum. 2005;494:399-404. https://hdl.handle.net/21.15107/rcub_vinar_6534 .
Rocen, JJ, Čerović, Ljiljana S., Milonjić, Slobodan K., "Adsorption of Tiron onto alumina" in Materials Science Forum, 494 (2005):399-404, https://hdl.handle.net/21.15107/rcub_vinar_6534 .