Pure phase ferrierite (FER) zeolite was hyhrothermally synthesized with tetrahydrofuran (THF) as the template in the presence of catalytic amount of OP emulsion agent in the reactant system of THF-Na₂O-SiO₂-Al₂O₃-H₂O. Powder X-ray diffraction (XRD), scanning electron microscope (SEM), ¹³C cross polarization (CP) and ²⁷Al magic angle spinning nuclear magnetic resonance (MAS NMR), X-ray fluorescence scattering spectroscopy (XRF) and nitrogen sorption were used to characterize the synthesized product. The catalytic amount of OP added in the reactant system has played a promoting role in the zeolite crys-tallization, reducing the reaction temperature, shortening the synthesis time and restraining the coexistence of mordenite (MOR) phase.

Key words: ferrierite zeolite, tetrahydrofuran, OP emulsion agent, crystallization, promoting role, hydrothermal synthesis