Izisefo zama-molecular ze-Zeolite zinomphumela oqinile wokuhlukanisa i-nitrogen ne-oxygen. Zinesakhiwo nezici zekristalu, ubuso buyi-skeleton eqinile, futhi izimbobo zangaphakathi zingadlala indima yokumunca ama-molecule. Kunezimbobo ezixhumene phakathi kwezimbobo, futhi ama-molecule adlula ezimbobeni. Ngenxa yemvelo ehlanzekile yezimbobo, ukusatshalaliswa kosayizi wezimbobo zesisefo sama-molecule kuyafana kakhulu. Izisefo zama-molecule zimunca ngokukhetha ama-molecule ngokusekelwe kusayizi wezimbobo ezingaphakathi kwamakristalu azo, okungukuthi, zimunca ama-molecule osayizi othile ngenkathi zixosha ama-molecule ezinto ezinkulu.