What are the Common Types of In Situ Spectroscopy?
Several types of in situ spectroscopy are commonly used in catalysis research:
- Infrared (IR) Spectroscopy: Monitors the vibrations of molecular bonds, providing information about the chemical environment and the interaction between reactants and the catalyst. - Raman Spectroscopy: Complements IR spectroscopy by providing additional molecular structure information, particularly for species that are difficult to observe with IR. - X-ray Absorption Spectroscopy (XAS): Provides details about the electronic structure and oxidation states of the catalytic materials. - Nuclear Magnetic Resonance (NMR) Spectroscopy: Offers insights into the molecular dynamics and the nature of active sites by observing the local magnetic environments of nuclei in the catalyst. - UV-Vis Spectroscopy: Monitors the electronic transitions in catalysts, which can be related to their oxidation states and the formation of intermediates.
