| dc.creator | Roca, S | |
| dc.creator | Airoldi, C | |
| dc.date | 1996 | |
| dc.date | AUG 1 | |
| dc.date | 2014-12-16T11:37:43Z | |
| dc.date | 2015-11-26T16:26:42Z | |
| dc.date | 2014-12-16T11:37:43Z | |
| dc.date | 2015-11-26T16:26:42Z | |
| dc.date.accessioned | 2018-03-28T23:07:33Z | |
| dc.date.available | 2018-03-28T23:07:33Z | |
| dc.identifier | Thermochimica Acta. Elsevier Science Bv, v. 284, n. 2, n. 289, n. 297, 1996. | |
| dc.identifier | 0040-6031 | |
| dc.identifier | WOS:A1996VJ09000004 | |
| dc.identifier | 10.1016/0040-6031(95)02761-0 | |
| dc.identifier | http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58130 | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/58130 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/58130 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1268971 | |
| dc.description | The proton of amorphous titanium(IV) phosphate was exchanged with divalent cations (Zn, Ni, Co, Cu, Cd, Ph, and Hg) in aqueous solution at 298.15 +/- 0.02 K. For these cations, the values for the number of moles exchanged were in the sequence: Hg > Pb > Cu > Co > Ni > Cd > Zn, which is also that of the hydration volume of the cation. A suspension of the exchanger was calorimetrically titrated with a cation solution in a heat-flow microcalorimeter. After subtracting the thermal effect of dilution, the thermodynamic data for this process were calculated. All enthalpies obtained are endothermic in nature; the values were: (Zn) 13.20+/-0.35; (Hg) 6.93+/-0.21; (Cd) 5.36+/-0.21; (Ni) 3.85+/-0.09; (Cu) 3.47+/-0.10; (Cd) 3.41+/-0.07 and (Ph) 1.87+/-0.06 kJ mol(-1), which can be ordered as Zn > Hg > Cd > Ni > Cu > Co > Pb. With the exception of mercury, this sequence of enthalpy is the reverse of that obtained for the number of moles exchanged. | |
| dc.description | 284 | |
| dc.description | 2 | |
| dc.description | 289 | |
| dc.description | 297 | |
| dc.language | en | |
| dc.publisher | Elsevier Science Bv | |
| dc.publisher | Amsterdam | |
| dc.publisher | Holanda | |
| dc.relation | Thermochimica Acta | |
| dc.relation | Thermochim. Acta | |
| dc.rights | fechado | |
| dc.rights | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
| dc.source | Web of Science | |
| dc.subject | divalent cations | |
| dc.subject | enthalpy | |
| dc.subject | ion exchange | |
| dc.subject | thermodynamic data | |
| dc.subject | titanium phosphate | |
| dc.subject | Alpha-titanium | |
| dc.subject | Cation Exchanger | |
| dc.subject | Behavior | |
| dc.title | Thermodynamic data of ion exchange on amorphous titanium(IV) phosphate | |
| dc.type | Artículos de revistas | |
