The static drying process typically involves placing the catalyst material in a drying oven or a vacuum chamber. The temperature and environment are carefully controlled to avoid damaging the catalyst. Common techniques include:
Vacuum drying - where a vacuum is applied to lower the boiling point of the solvent, thus enabling drying at lower temperatures. Thermal drying - where heat is applied to evaporate the moisture. Inert gas drying - where an inert gas like nitrogen is used to displace moisture without causing oxidation.