Schmidt, Peer and Schoeneich, Michael and Bawohl, Melanie and Nilges, Tom and Weihrich, Richard (2012) The use of the High-Temperature Gas-Balance (HTGB) for thermogravimetric measurements Thermal analysis detecting equilibrium conditions. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 110 (3). pp. 1511-1521. ISSN 1388-6150,
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Several methods are established in thermal analysis to investigate phase formation, phase transition, and decomposition reactions. The analysis of phase equilibria with volatile components is particularly feasible by using standard method of thermogravimetry. Hardly any investigations of phase formation reactions are possible to realize if one of the components is lost by vaporization. By using the "High-Temperature Gas-Balance" (HTGB), the vapor phase is enclosed in a silica ampoule and thus forms an equilibrium gas phase in permanent contact with the solid phase. The measurement signal Delta m (meas) is caused by change of the leverage of the horizontal balance support during evaporation and condensation. The application of the HTGB allows the analysis of solid-gas equilibria in the working range from 0.01 till 15 bar at temperatures up to 1,100 A degrees C. The first comparison of evaporation reactions determined by standard thermogravimetric analyses and by measurements using the HTGB is given for the inorganic systems: P, As, SeO2, PtI2, and Hg/I.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOSPHORUS; High-Temperature Gas-Balance; Thermogravimetry; Vapor pressure; Equilibrium measurements |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Dr. Richard Weihrich |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 May 2020 05:18 |
| Last Modified: | 04 May 2020 05:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17704 |
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