What role does catalyst support play in poison resistance?
Catalyst supports play a critical role in enhancing poison resistance. They can physically separate active sites from poisons or bind poisons themselves, preventing them from interacting with the catalytic sites. Furthermore, supports can disperse the active phase, reducing the effects of localized poisoning. Common supports include alumina, silica, and zeolites, which are chosen for their ability to interact favorably with both the active phase and potential poisons.