To diagnose selectivity loss, several techniques and analyses can be employed:
1. Kinetic Studies: By analyzing the reaction rates of various products, one can determine the changes in selectivity over time. 2. Spectroscopic Techniques: Methods like XPS (X-ray Photoelectron Spectroscopy) and IR (Infrared Spectroscopy) can identify changes in the catalyst surface. 3. Microscopy: Techniques such as TEM (Transmission Electron Microscopy) can reveal physical changes in the catalyst structure. 4. Reaction Pathway Analysis: Understanding the reaction mechanism can help identify potential side reactions and their causes.
