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Thermogravimetric analysis linked with mass spectrometry

The differential thermal analysis (DTA) offers the possibility to investigate thermal properties of the materials. In this case, the measurement is based on a comparison of the temperature of the sample and a selected reference substance arranged in a symmetrically sample holder (usually two identical crucibles) which are located in a furnace. By a constant heat supply the temperature difference between the two crucibles is detected which provides information about phase transitions and potential decomposition temperatures of the metals, polymers, salts, etc, for instance. In addition, the measurement can alternatively operate by the method of dynamic differential calorimetry (DSC) to determine characteristic temperatures and caloric parameters.

The measuring setup can also operate only thermo-gravimetrically (TG). A sample holder designed for this purpose detects the changed mass increase/decrease over the entire test time of an isothermal reaction procedure.

Besides, the recording of the change in weight, the amount of gas produced by the reaction (e. g. H2O, H2, CO, CO2, etc.) can be additionally determined qualitatively as well as and quantitatively using a mass spectrometer (TG-MS).

Photo of the TG-MSPhoto of the TG-MS

Specifications
  • Swiveling double lifting device for changing ovens (H2O-Oven, Al2O3-Oven)
  • Operation modes: TG, TG-MS, TG-DSC, TG-DTA
  • Optional evacuating (autovac)
  • Temperature: 25-1650 °C
  • Gas type: H2/Ar/He/N2/Air
  • Optional humidification (humidity 0,5-10 g ∙ h-1)

Circuit diagram of the TG-MSCircuit diagram of the TG-MS



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