Thermodynamic properties of platinum chloride complexes in aqueous solutions: Derivation of consistent parameters from literature data and experiments on Pt(cr) solubility at 400-75°C and 1 kbar
详细信息 查看全文
- 作者：B. R. Tagirov ; N. N. Baranova ; Ya. V. Bychkova
- 关键词：platinum ; chloride complexes ; hydrothermal solutions ; thermodynamic properties
- 刊名：Geochemistry International
- 出版年：2015
- 出版时间：April 2015
- 年：2015
- 卷：53
- 期：4
- 页码：327-340
- 全文大小：517 KB
- 参考文献：1. Berman, R G (1988) Internally-consistent thermodynamic data for minerals in the system Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-SiO2-TiO2-H2O-CO2. J. Petrol. 29: pp. 445-522 CrossRef
2. Dadze, T P, Kashirtseva, G A (2007) Solubility of platinum and palladium in chloride hydrothermal solutions: experimental data. Proceedings of the Annual Session of the Moscow Division of the Russian Mineralogical Society, in Honor of 110th Anniversary of the Academician A.G. Betekhtin “Role of Mineralogy in the Understanding of Ore Formation,-Moscow, Russia, 2007. Inst. Geol. Rudn. Mestorozhd., Moscow, pp. 136-139
3. Drougge, L, Elding, L I, Gustafson, L (1967) Stepwise dissociation of the tetrachlorplatinate (II) ion in aqueous solution. III. Influence of temperature on kinetics and equilibrium of the first step. Acta Chem. Scand. 21: pp. 1647-1653 CrossRef
4. Elding, L I (1966) The stepwise dissociation of the tetrachloridoplatinate (II) ion in aqueous solution. II. Kinetics of the first step. Acta Chem. Scand. 20: pp. 2559-2567 CrossRef
5. Elding, L I (1970) The stepwise dissociation of the tetrachloridoplatinate (II) ion in aqueous solution. IV. The chlorotriaquaplatinum (II) ion. Acta Chem. Scand. 24: pp. 1331-1340 CrossRef
6. Elding, L I (1978) Stabilities of platinum (II) chloro and bromo complexes and kinetics for anation of the tetraaquaplatinum (II) ion by halides and thiocyanate. Inorg. Chim. Acta 28: pp. 255-262 CrossRef
7. Elding, L I, Leden, I (1966) On the stepwise dissociation of the tetrachloridoplatinate (II) ion in aqueous solution. Acta Chem. Scand. 20: pp. 706-715 CrossRef
8. Gammons, C H, Bloom, M S, Yu, Y (1992) Experimental investigation of the hydrothermal geochemistry of platinum and palladium: I. Solubility of platinum and palladium sulfide minerals in NaCl/H2SO4 solutions at 300°C. Geochim. Cosmochim. Acta 56: pp. 3881-3894 CrossRef
9. Ginstrup, O (1972) The redox system Platinum (0)/Platinum (II)/Platinum (IV) with chloro and bromo ligands. Acta Chem. Scand. 26: pp. 1527-1541 CrossRef
10. Ginstrup, O, Leden, I (1968) Emf measurements on the system platinum (IV)/platinum (II) in a chloride ion medium at 60°C. Acta Chem. Scand. 22: pp. 1163-1170 CrossRef
11. Grantham, L F, Elleman, T S, Martin, D S (1955) Exchange of chlorine in aqueous systems containing chloride and tetrachlorplatinate (II). J. Am. Chem. Soc. 77: pp. 2965-2971 CrossRef
12. Grinberg, A A, Gel’fman, M I (1960) Stability of the complex compounds of bivalent platinum. Dokl. Akad. Nauk SSSR 133: pp. 1081-1083
13. Grinberg, A L, Shagisultanova, G A (1960) Problem of the stability of complex compounds of bivalent platinum. Zh. Neorg. Khim. 5: pp. 280-282
14. Johnson, J W, Oelkers, E H, Helgeson, H C (1992) SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species, and reactions from 1 to 5000 bars and 0° to 1000°C. Comp. Geosci. 18: pp. 899-947 CrossRef
15. Kawaizumi, F (1992) Partial molar volumes of halogeno complexes of platinum and palladium in aqueous solutions and differences in volume between tetra- and hexa-coordinated forms. J. Chem. Soc. Faraday Trans. 88: pp. 2351-2353 CrossRef
16. Koroleva, L A, Shikina, N D, Kolodina, P G, Zotov, A V, Tagirov, B R, Shvarov, Yu V, Volchenkova, V A, Shazzo, Yu K (2012) Experimental study of Pd hydrolysis in aqueous solutions at 25-0°C. Geochem. Int. 50: pp. 853-859- 刊物主题：Geochemistry;
- 出版者：Springer US
- ISSN：1556-1968
文摘
The solubility of Pt(cr) in acidic chloride solutions was measured at 400-75°C and P = 0.8-.0 kbar using an autoclave technique and the analysis of the dissolved component after quenching. The PtCl 3 ?/sup> complex was identified as the main Pt species at experimental parameters, m(NaCl) = 0.1-.0 mol/kg H2O and m(HCl) ?.01. The thermodynamic parameters of the Helgeson-Kirkham-Flowers (HKF) model were determined for Pt2+ and Pt-Cl complexes (PtCl n 2?em class="a-plus-plus">n n = 1-) by analysis of literature data and their adjustment with obtained results. The solubility of Pt under supercritical P-T parameters calculated using these parameters is similar to Pd solubility. The thermodynamic properties and HKF model parameters for aqueous species determined in this study were incorporated into the on-line version of the FreeGC database (http://www-b.ga.gov.au/minerals/research/methodology/geofluids/freegs_about.jsp), which allows calculation of the Gibbs free energy of system components and equilibrium constants of reactions with these species.