Synthesis and catalytic activity in n-hexane isomerization of EU-1 zeolite

In this study, a series of pure-phase EU-1 zeolites were synthesized by introducing seeds into a series of synthetic gels with different SiO2/Al2O3 ratios (nSiO(2)/nAl(2)O(3), containing pure silicon gel). The effect of the aluminum source, the amount of template and seed on the crystallinity, and the morphology and size of EU-1 zeolite were investigated. The effects of different SiO2/Al2O3 ratios synthesis systems on the crystallinity, crystal size, acidic property, specific surface area, and pore volume of the samples were emphatically studied. Pure phase EU-1 was synthesized not only in a high-silicon system but also in an aluminum-free system by the seeding method. The results were plotted into a ternary plot of the synthesis conditions of pure phase EU-1 zeolite. It is obvious from the ternary plot that the crystal seed method can significantly expand the synthesis region of pure phase EU-1 zeolite. Pt/H-EU-1 was applied to catalyze the n-hexane isomerization reaction. The results showed that the catalyst had excellent n-hexane isomerization activity and stability, and high selectivity to isoparaffins.