FacileSynthesis of Mesoporous Zeolite Y with Improved Catalytic Performancefor Heavy Oil Fluid Catalytic Cracking.

A facileand direct approach for the synthesis of mesoporous zeolite Y by using[(CH3O)3SiC3H6N(CH3)2-C18H37]Cl as templateis presented. Under the basic condition of the Y synthesis system,(CH3O)3Si– bonds hydrolyze to −Si–OH,and yield −Si–O–Al– and −Si–O–Si–linkages that anchor the template in zeolite framework. Afterward,micelles formed by −C18H37lead to theformation of mesoporosity within zeolite Y crystals. This material,which introduces intracrystalline mesoporosity into zeolite Y, showssuperior catalytic performance when used in heavy oil catalytic cracking. [ABSTRACT FROM AUTHOR]