Leaching tests typically involve the following steps:
1. Pre-treatment: The catalyst is subjected to a pre-treatment process, such as calcination or reduction, to activate it. 2. Reaction Conditions: The catalyst is then exposed to the reaction conditions, which can include high temperatures, pressures, and various solvents or reactants. 3. Analysis: After the reaction, the liquid phase is analyzed for the presence of the active species using techniques like Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS).