Fourier Transform Infrared (FT-IR) Spectrometers Coupled to Thermal Analysis Concepts, Instruments and Applications from -150°C to 2000°C Analyzing & Testing

Thermal Analysis Plus FT-IR More Than Just the Sum of Its Parts Perfect Combination Bridges the Analytical Gap and Facilitates Fingerprint Analysis Thermal Analysis provides ideal tools for the characterization of all kinds of organic and inorganic solids and liquids. Thermodynamic transitions, thermal stability, decomposition and chemical reactions can be detected and quantified with high accuracy over a broad temperature range. In some cases, however, information about the type of gases evolved is needed in order to gain a detailed understanding of the chemistry behind the processes. The combination...

Harmonized Instrument Combinations with Fully Integrated Software from the Specialists in Thermal Analysis and IR Spectroscopy Vacuum capability for oxygen removal, elimination of carryover, and lowering of boiling points Optimized low-volume gas cells without mirrors inside Additional operation for regular FT-IR experiments or for hyphenated tests without modification and disassembling (by use of an external gas cell) High resolution and high sensitivity Great Variety of Configurations to Meet all Needs Coupling type Transfer line – external gas cell Transfer line – internal gas cell PERSEUS®...

Optimized TG/STA/DSC – FT-IR Coupling Gamma rays Wave length Afterwards, the two beams are merged once again and interfere – depending on the frequencies contained in the beam and the distance covered by the mirror. The result is an interferogram characterized by a center burst and comparatively flat wings. The center burst represents the point at which the two mirrors are equidistant from the beam splitter (this means all frequencies interfere additively). Subsequently, the interferogram is transformed into a spectrum using Fourier Transformation. Radio waves Moving mirror Q Light source Beam...

Sophisticated Gas Cell Design To ensure highly sensitive detection of the gases evolved, it is necessary to have a gas cell with a long path length and low volume. The longer the path length, the more molecules are interacting with the IR beam. On the other hand, the gas concentration is also influenced by the volume of the gas cell. The lower the volume, the higher the concentration of the gases evolved. Developed in a collaboration between NETZSCH Analyzing & Testing and Bruker Optics, the beam-conforming metal gas cells with their optimized gas flows perfectly combine these requirements. An...

TGA/STA-FT-IR Coupling for Maximum Flexibility Bruker INVENIO with external gas cell coupled to the NETZSCH TG 309 Libra® with ASC and QMS 505 Aëolos All NETZSCH thermobalances and simultaneous thermal analyzers (STAs) are characterized by their vertical, top-loading design. This not only guarantees easy operation and sample loading, but is also in accordance with the natural gas flow path inside the furnace (warm gases have the tendency to rise) and protects the balance underneath in an optimal way. Because of this natural gas flow path, top-loading thermobalances are ideally suited for coupling...

Schematic of the TGA-FT-IR coupling using an external gas cell, adapter and heated transfer line TG cell Prerequisite for Effective Coupling An adapter together with a short transfer line should connect the gas outlet of the TGA, DSC or STA furnace to the gas cell of the FT-IR spectrometer. The evolved gases are transferred using a carrier gas (usually nitrogen). To prevent cold spots and thus condensation of the gases evolved, the entire gas path should be heated. The temperatures are up to 400°C for the adapter and max. 400°C for transfer line. The Right Detector for Any Application Built-in...

Coupling Via Transfer Line Low-Volume Gas Path Ensures Fast Response Times Bruker INVENIO with external gas cell and an ATR unit in the FT-IR sample compartment High Concentrations and Short Gas Transfer Paths for Direct Correlation with Mass Loss TGA-FT-IR – Smart Gas Transfer External gas cell – Free Internal FT-IR Compartment The gas transfer line is characterized by a low volume and a short capillary length, thus minimizing dilution effects and leading to fast response times. An external gas cell allows the operator access to a great deal of the FT-IR spectrometer’s flexibility and makes...

STA-FT-IR – Sensitive Evolved Gas Analysis The combination of evolved gas analysis (EGA) and simultaneous thermal analysis (STA) provides also information on changes in the heat flow of the sample (DSC signal), thus allowing for an even deeper understanding of the chemical and physical processes under investigation. A heated adapter is the interface between the gas outlet of the STA furnace and the heated transfer line to the Bruker FT-IR spectrometer. Also here, it is possible to connect one thermal analysis instrument with two gas analyzers, such as FT-IR and QMS or FT-IR and GC-MS. Classical...

Perfect Coupling of Thermal Analysis and FT-IR PERSEUS® TG 209 Libra® – No Separate Transfer Line PERSEUS® is the name given to the unique alliance between a NETZSCH thermobalance (or STA system) and a tiny but efficient FT-IR spectrometer by Bruker Optics. Its revolutionary layout sets a benchmark for state-of-the-art hyphenation. The PERSEUS® coupling interface excels in both design and ease of handling. No separate transfer line is necessary. The built-in heated gas cell is directly connected to the gas outlet of the furnace via a heated tube. The low volume of the short gas path guarantees...

Space-Saving PERSEUS® STA 509 Jupiter® The powerful and cost-effective PERSEUS® STA 509 features a compact 2-in-1 design which saves over 50% of the bench top space required for a capillary-coupled system. The short gas path with low volume provides an excellent correlation between mass losses and the gases detected. In order to minimize the risk of condensation, the PERSEUS® coupling interface is heated using a constant voltage. Optionally, a temperature control system is available (recommended for condensable gases). The maximum temperature of the entire gas path is set to 200°C. Any existing...