What are the Types of IR Spectroscopy Used in Catalysis?
Several types of IR spectroscopy are commonly employed in catalysis research:
Transmission IR Spectroscopy: Measures the intensity of IR light passing through a sample. Suitable for thin films or powdered catalysts. Reflection-Absorption IR Spectroscopy (RAIRS): Measures IR light reflected off a surface, useful for studying thin layers on reflective substrates. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): Measures scattered IR light from powdered samples, suitable for heterogeneous catalysts. Attenuated Total Reflectance (ATR) IR Spectroscopy: Measures IR light reflected internally within a crystal in contact with the sample, ideal for studying surface interactions.
