Dispersants work by adsorbing onto the surface of catalyst particles, providing a barrier that prevents them from coming together and forming larger aggregates. This can be achieved through various mechanisms: - Electrostatic Repulsion: Dispersants can impart a charge to the particles, leading to repulsion between similarly charged particles. - Steric Hindrance: Large molecules can physically block particles from approaching each other. - Polymeric Coating: Some dispersants form a polymeric layer around particles, keeping them separated.