Catalyst composition with high efficiency for the production of light olefins

Process for the preparation of a catalyst composition comprising the following steps:

• 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,
• wherein the total amount of amorphous alumina in the final catalyst composition is at least 10 wt %,
• wherein the phosphorus-containing compound is not a sodium, aluminium, calcium, or magnesium salt.