How Does One Perform IR Spectroscopy in Catalysis?
There are several methods to perform IR spectroscopy in the context of catalysis:
Transmission IR Spectroscopy: This involves passing IR radiation through a sample and measuring the absorbed frequencies. It is suitable for studying gases and thin films. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): This technique is used for studying powders and heterogeneous catalysts. It measures the scattered IR light from the sample and is particularly useful for in situ studies. Attenuated Total Reflectance (ATR) Spectroscopy: ATR involves measuring the IR light reflected within a crystal in contact with the sample. It is useful for studying liquids and surface interactions.
