4. Conclusion
Mordenite with crystal diameter 65 nm and crystal length 7 lm
was successively synthesized in the absence of organic template by
hydrothermal method at 180 C for 5 days after stirring at high
speed and aging in the synthesis mixture with the molar composition
of 12Na2O:100SiO2:2Al2O3:500H2O. Na+ cation plays a structure
directing role in place of an organic template, enhancing the
nucleation and forming mordenite zeolite crystals.