Alumina matrix modification in FCC catalyst composition

A fluid catalytic cracking (FCC) catalyst composition comprising a Y-zeolite, wherein the Y-zeolite comprises a rare earth element or oxide thereof, and a modified alumina matrix,

• wherein:
• the modified alumina matrix comprises γ-Al2O3 or pseudo-boehmite and a dopant;
• and
• wherein the dopant comprises yttrium (Y), scandium (Sc), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), cerium (Ce), lanthanum (La), titanium (Ti), zirconium (Zr), an oxide thereof, or a combination of any two or more thereof, in an amount of about 0.01 wt % to about 10 wt % based on total weight of the alumina matrix;
• or,
• wherein the dopant comprises germanium (Ge), tin (Sn), bismuth (Bi), an oxide thereof, or a combination of any two or more thereof, in an amount from about 0.01 wt % to about 35 wt % based on total weight of the alumina matrix,
• wherein the catalyst comprises about 15 wt % to about 65 wt % of the modified alumina matrix based on total weight of the catalyst.