processo para a preparação de uma composição de catalisador, composição de catalisador, e, processo para o craqueamento catalìtico de uma carga de alimentação de hidrocarbonetos

摘要

The present invention is directed to a catalyst composition for FCC which has high efficiency in the production of light olefins while maintaining the bottoms conversion. Said catalyst composition is prepared by: a) ex situ activating an olefin selective zeolite with at least 10 wt% of a phosphorus-containing compound, calculated as P2O5 based on the total amount of olefin selective zeolite. b) combining the activated olefin selective zeolite with 10-40 wt % catalytic cracking component, binder and 0-25 wt% silica in a slurry so that the total amount of amorphous alumina present in the final catalyst composition is at least 10 wt%, and c) spray-drying the slurry to form catalyst particles.