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FTIR system with vacuum RAIRS and high-pressure DRIFTS
- Basic description: Operando system for IR vibrational spectroscopy in a wide range of pressures and temperatures
- Techniques and capabilities:
- Purpose:
- Manager: V. Johánek, M. Wróbel
- Team:
Experimental methods:
- RAIRS (IRRAS): Reflection absorption infrared spectroscopy based on Bruker Vertex 70v system, with independently variable incidence and reflection angles
- DRIFTS: Diffuse reflectance infrared Fourier transform spectroscopy module with Harris Praying Mantis cell
Further equipment:
- RAIRS cell: Vacuum tight IR-acceessible cell for performing operando reaction and absorption measurements spanning sub-mbar to ~bar pressures
- Temperature PID controller for sample heating control of RAIRS
- Temperature PID controller for sample heating control of DRIFTS
- Gas manifold: Gas distribution system with 3 independent mass flow controllers spanning 2-100 sccm range
- Pressure controller: Gas pressure control with PID feedback to maintain contant pressure in the RAIRS cell