Zeolite: lithiamu zeolite, zeolite 3A, 4A, 5A, 13X HP, ndi yapadera popanga mpweya.

Ma sieve a molekyulu a Zeolite ali ndi mphamvu yolekanitsa kwambiri nayitrogeni ndi mpweya. Ali ndi kapangidwe ndi makhalidwe a kristalo, pamwamba pake ndi mafupa olimba, ndipo mabowo amkati amatha kugwira ntchito yokopa mamolekyu. Pali mabowo olumikizana pakati pa mabowo, ndipo mamolekyu amadutsa m'mabowo. Chifukwa cha kuyera kwa mabowo, kufalikira kwa kukula kwa mabowo a sieve ya molekyulu ndi kofanana kwambiri. Ma sieve a molekyulu amakoka mamolekyu mosankha kutengera kukula kwa mabowo mkati mwa makristalo awo, ndiko kuti, amakoka mamolekyu a kukula kwinakwake pamene akuchotsa mamolekyu a zinthu zazikulu.