Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 110: Issue 3
The use of the High-Temperature Gas-Balance (HTGB) for thermogravimetric measurements
Thermal analysis detecting equilibrium conditions
Authors:
Peer Schmidt Faculty of Sciences, Inorganic Solids and Materials, Lausitz University of Applied Science, P.O. Box 101548, 01958, Senftenberg, Germany

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Michael Schöneich Department of Inorganic Chemistry, Technische Universität Dresden, Helmholtzstrasse 10, 01069, Dresden, Germany

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Melanie Bawohl Institute for Inorganic and Analytical Chemistry, WWU Münster, Corrensstraße 30, 48149, Münster, Germany

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Tom Nilges Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85737, Garching, Germany

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Richard Weihrich Institute for Inorganic Chemistry, Universität Regensburg, Universitätsstr. 31, 93040, Regensburg, Germany

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Pages:
1511–1521
Online Publication Date:
18 Dec 2011
Publication Date:
01 Dec 2012
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-011-2107-3
Keywords:
High-Temperature Gas-Balance; Thermogravimetry; Vapor pressure; Equilibrium measurements
Restricted access

Abstract

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 Δmmeas 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 °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.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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