Abstract: Additives for mixing with the catalyst inventory in process units for fluid catalytic cracking (FCC) for maximizing the production of LPG and light olefins are described. Said additives comprise a matrix that incorporates a zeolite of type MFI, preferably zeolite ZSM-5, a zeolite of type Y, and a source of phosphorus, in a single particle. Mixing of the additive in proportions from 1.0 to 40 wt. % with the equilibrium catalyst of an FCC unit maximizes the production of LPG and light olefins, chiefly propylene.

Abstract: The present invention relates to a cracking catalyst composition comprising a physical mixture of 10-90 weight % of a cracking catalyst A and 90-10 weight % of a cracking catalyst B, whereby catalyst A is a zeolite-containing cracking catalyst, and catalyst B is a catalyst having a higher average pore volume in the pore diameter range of 20-200 Å than catalyst A in the same pore diameter range and not containing M41S material. These compositions can suitably used for the fluid catalytic cracking of hydrocarbon feeds with high metal concentrations.

Abstract: The present invention relates to a cracking catalyst composition comprising a physical mixture of 10-90 weight % of a cracking catalyst A and 90-10 weight % of a cracking catalyst B, whereby catalyst A is a zeolite-containing cracking catalyst, and catalyst B is a catalyst having a higher average pore volume in the pore diameter range of 20-200 Å than catalyst A in the same pore diameter range and not containing M41S material. These compositions can suitably used for the fluid catalytic cracking of hydrocarbon feeds with high metal concentrations.