Zothandizira za silika zimakhala ndi maubwino osiyanasiyana pamachitidwe amankhwala chifukwa cha kukula kwawo kwa pore komanso malo apamwamba kwambiri. Choyamba, pore kukula facilitates kufalikira kwa chothandizira reactants, potero kuonjezera anachita mlingo ndi selectivity. Chachiwiri, silika catalysts ndi mankhwala inert ndipo musakumane nonspecific zimachitikira ndi reactants, potero kuchepetsa anachita selectivity ndi zokolola. Kuphatikiza apo, zopangira silika ndizosavuta kugwiritsa ntchito ndikukonzekera, zomwe zimatsogolera kufalikira kwawo.
