Synthesis of zeolite L. tuning size and morphology

A convenient synthesis of zeolite L is presented. The size of the crystals can be tuned between 30 and 6000 nm, spanning a volume range of seven orders of magnitude. The zeolite L crystals, which typically feature a cylindrical morphology, are synthesized with various aspect ratios ranging from elongated to disc-shaped. The importance of obtaining zeolite crystals with well-defined size and morphology is discussed in view of potential applications of zeolite L containing organic dye molecules as guests.