Synthesis of SAPO-11 and MgAPO-11 Molecular Sieves in Water–Butanol Biphase Media

SAPO-11 and MgAPO-11 molecular sieves were synthesized in water-butanol biphase media. The water-butanol biphase media favored the incorporation of Si into SAPO-11 and the formation of more acid sites. Therefore, the Pt catalyst supported on the SAPO-11 synthesized in the biphase medium exhibited much higher catalytic activity for the hydroisomerization of n-dodecane than that supported on the SAPO-11 synthesized in an aqueous medium. In contrast, the water-butanol biphase media were unfavorable for the Mg substitution into the framework, and thus the acid sites and the catalytic activity of Pt/MgAPO-11 decreased.