Synthesis of zeolite NaA at room temperature: The effect of synthesis parameters on crystal size and its size distribution

► Although 72 h product was fully crystalline, the crystals were able to continue to grow. ► Longer aging time led to the mean particle size of crystals decreased slightly. ► The effect of stirring speed on the crystalline end products was investigated. ► The aluminum source had much more obviously influence on the crystal phase of final product than the silicon source did.