A high-yield light catalytic cracking catalyst and preparation method

The present invention relates to a high light yield and a method for preparing catalytic cracking catalysts, reforming catalyst containing magnesium, from 2 to 50% by weight of rare earth ultra-stable Y-type zeolite, 0.5 to 30 wt% of one or more other molecular sieves, 0.5 to 70 wt% of clay, 1.0 to 65 wt% of the refractory inorganic oxide and a rare earth oxide of 0.01 to 12.5% ​​by weight. Magnesium-modified rare earth ultra-stable Y-type zeolite is NaY zeolite as raw material, a rare earth exchange and a dispersing pre-exchange, exchange modified magnesium, sodium ammonium exchanged down, "two cross two baking" was modified magnesium rare earth ultra-stable Y Zeolites. The present invention provides a catalyst having a strong ability of heavy oil conversion, the yield of light oil characteristics.