Abstract

Ferrierite type zeolite can be synthesized without using any organic structure-directing agent from Na- or (Na, K)- or K-aluminosilicate system. (Na, K)-ferrierite is synthesized from wide range of OH/SiO2 region of the reactant mixture compared with Na- and K-ferrierite. The crystallization process of ferrierite in each system is investigated in detail by X-ray diffraction and Raman spectroscopy. The role of potassium and sodium cations and cooperative effect of two cations in the formation of the framework of ferrierite are elucidated.

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