What are the types of Catalysts used in Green Chemistry?
There are primarily three types of catalysts used in green chemistry:
1. Homogeneous Catalysts: These are catalysts that exist in the same phase as the reactants. They offer high selectivity and efficiency but can be challenging to separate from the reaction mixture. 2. Heterogeneous Catalysts: These catalysts exist in a different phase than the reactants, often as solids in contact with liquid or gas reactants. They are easier to separate and reuse but may have lower selectivity. 3. Biocatalysts: Enzymes and other biological molecules fall into this category. They are highly selective and operate under mild conditions, making them environmentally friendly.