Thermal Gravimetric Analysis and Evolved Gas Analysis
Pacific Northwest National Laboratory (PNNL)
PNNL has a NETZSCH STA 449 F3 Jupiter, a simultaneous thermal analyzer that combines the benefits of a true differential scanning calorimeter and a high-sensitivity thermobalance. It measures the mass change and the heat released/absorbed by the sample material during heating/cooling for such studies from -150°C to 1,000°C under static or dynamic vacuum and flow of inert or reactive gases. The STA 449 is coupled with an Agilent gas chromatograph (GC) and JEOL mass spectrometer (MS) for conducting evolved gas analysis and quantification. In addition to the GC-MS a residual gas analyzer is also available for evolved gas analysis. This enables identification of gases in real time and pulsed mode. The instrument is connected with hydrogen, oxygen, air, nitrogen, argon, helium, and carbon dioxide for routine analysis.
Currently available for use in collaboration with HyMARC.
- A. Karkamkar, S. Kathmann, G. Schenter, D. Heldebrant, N. Hess, M. Gutowski, and T. Autrey, "Thermodynamic and Structural Investigations of Ammonium Borohydride, a Solid with a Highest Content of Thermodynamically and Kinetically Accessible Hydrogen," Chemistry of Materials 21 (2009): 4356–4358.
- M. Chong, A. Karkamkar, T. Autrey, S. Orimo, S. Jalisatgi, and C. M. Jensen, "Reversible dehydrogenation of magnesium borohydride to magnesium triborane in the solid state under moderate condition," Chemical Communications 47 (2011): 1330.