FCC Additives When using shape-selective zeolite-based active ingredient propylene prolific production of highly active additives, curing and FCC FCC primary catalyst in combination, can increase the yield of LPG and propylene. The catalytic additives have a higher selective catalytic activity. It has good abrasion resistance and particle size distributi Item Unite Spec Appearance / white flowing microspheres BET M2/g 135 Attrition Index %h-1 1.5 Bulk Density g/ml 0.72 Pore Volume ml/g 0.35 Na2O wt% 0.10 Al2O3 wt% 28 LOI wt% 5 D50 um 83 0-20 um 4 0-40 um 13 0-149 um 92