SANDWICH

An operando FTIR reactor for studying materials and reaction mechanisms in real operating conditions.

Characteristics

Real-time conditions

Analysis of the gas and the surface phase using FTIR in real-time conditions to identify the nature of the reacted, intermediate and formed species.

Controlled flow

Analysis in operando conditions: conditions in which the process conditions (flow composition, temperature and pressure) are controlled to be close to the reality.


Features

  • Cell body made of stainless steel (inox 316 L or inconel)
  • Dimension: suitable for the compartment of an IR spectrometer
  • Small internal volume (~ 0.5 cm³)
  • Gas flow : 5-100 cm³/min
  • Temperature: ambient temperature to 500 °C (under flow)
  • Working pressure: atmospheric pressure to 10 bars
  • 110 V power supply
  • Air cooling system (Compressed air, not provided)
  • Self-supported wafer (diameter = 16 mm)
  • Swagelok fittings: 1/4 » (cooling), 1/8 » (gas inlet/outlet), and 1/16 » (thermocouple)
Scheme of the inside of the Sandwich cell

Accessories

  • 3 valve glass fitting (glass-metal) for precise addition of probe molecules
  • Sample holder for a 16 mm disc wafer or a square wafer: 11 x 11 mm
  • KBr, CaF₂ or BaF₂ windows (25 x 12 mm and 25 x 32 mm)
  • Karlez/Viton gaskets for better sealing
  • K type thermocouples
  • Temperature controller: 220 V power supply
  • Sample holder and window positioning set
Sample holder, window and sample holder positioning set.

Applications

  • Study of the reaction mechanism
  • Adsorption of molecules, separation of pollutants…
  • Molecular-scale study of the thermal stability of materials
  • Determination of the intermediate species

Additional ressources:

Discovering the active sites for C3 separation in MIL-100(Fe) by using Operando IR Spectroscopy