What Types of IR Spectroscopy are Used in Catalysis?
There are several types of IR spectroscopy techniques commonly used in catalytic studies:
1. Transmission IR Spectroscopy: The most straightforward method where IR light is passed through a sample. It is often used for studying homogeneous catalysts. 2. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): This technique is used for studying powders and heterogeneous catalysts. It measures the IR light scattered by the sample. 3. Attenuated Total Reflectance (ATR): ATR-IR spectroscopy is used for samples with high absorption and for studying surface interactions. 4. Infrared Reflection Absorption Spectroscopy (IRRAS): This method is used to analyze thin films and surfaces, making it ideal for studying catalytic surfaces.
