- Titel
- Calcium Hydroxide Chlorides in THEREDA - Correction of phase stoichiometries
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:105-qucosa2-967422
- Quellenangabe
- THEREDA-Journal
Erscheinungsjahr: 2020
Jahrgang: 01
Heft: 04
ISSN: 2751-0921 - Erstveröffentlichung
- 2020
- Abstract (EN)
- Calcium hydroxide chlorides are ternary compounds occurring in the basic system Ca(OH)2 –CaCl2 –H2O as well as more complex systems. According to their composition xCa(OH)2 ∙ yCaCl2 ∙ zH2O they are also referred to as x-y-z-phases. Until 2019, literature was contradictory concerning their phase stoichiometries. Häusler et al. (Häusler, F., Schmidt, H., Freyer, D. Journal of Inorganic and General Chemistry, 645, (2019), pp. 723–731, DOI 10.1002/zaac.201900051.) precisely determined the compositions of the two existing phases as the hydrate 3Ca(OH)2∙CaCl2∙12H2O (3-1-12) and the anhydrous phase Ca(OH)2∙CaCl2 (1-1-0). Until now, the stoichiometries 3Ca(OH)2∙CaCl2∙13H2O (3-1-13) and Ca(OH)2∙CaCl2∙H2O (1-1-1) are implemented in THEREDA, according to the model of Harvie et al. (Harvie, C. E., Møller, N., Weare, J. H Geochimica et Cosmochimica Acta, 48, (1984), pp. 723–751, DOI 10.1016/0016-7037(84)90098-X.). With the correction of the two phase compositions in THEREDA, an adjustment of the solubility constants is necessary as described in the present Short communication.
- Freie Schlagwörter (DE)
- Calcium-Hydroxid-Chloride, geochemische Modellierung, Pitzer-Modell
- Freie Schlagwörter (EN)
- Calcium hydroxide chlorides, geochemical modeling, Pitzer model
- Klassifikation (DDC)
- 540
- Normschlagwörter (GND)
- Thermodynamik
- Wasser
- Anorganische Chemie
- Phasengleichgewicht
- Calciumhydroxid
- Calciumchlorid
- Löslichkeit
- Gibbs-Energie
- Modellierung
- Verlag
- THEREDA, Köln
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:105-qucosa2-967422
- Veröffentlichungsdatum Qucosa
- 17.04.2025
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY-NC-ND 4.0