The determination of a data window involves several factors:
1. Reaction Kinetics: Understanding the kinetics of the reaction helps in identifying the timeframe during which significant changes occur. 2. Catalyst Lifecycle: The lifecycle of the catalyst, including activation and deactivation phases, is considered. 3. Process Variables: Key variables such as temperature, pressure, and concentration are monitored to define the window. 4. Analytical Techniques: The availability and resolution of analytical techniques like spectroscopy and chromatography can also influence the data window.