Catalytic cracking additives based on mesoporous MCM-41 for sulfur removal

Materials based on mesoporous MCM-41/γ-Al2O3 silicon oxide with the supported compounds of La, W, and Ni and with W, Co, Mo, Zn, Ni, and La supported on γ-Al2O3 were synthesized and studied as additives to FCC catalysts. The samples were characterized by BET, TEM, and NH3-TPD methods, IR spectroscopy, and XRD analysis. The catalytic tests of the above additives in mixtures with a commercial cracking catalyst were performed in a MAT laboratory system. It was established that the addition of 10 wt% La/MCM-41/γ-Al2O3 to the catalyst made it possible to decrease the sulfur content of the liquid products of the cracking of vacuum gas oil to 40%.