摘要:
Methods and compositions to preferentially increase or decrease the yield of at least a selected hydrocarbon product in one or more fluidized units are provided. An embodiment includes: providing a high activity component to a fluidized unit as physically separate and distinct particles in an amount sufficient to preferentially increase the yield of at least a selected hydrocarbon product compared to another hydrocarbon product. Another embodiment includes: providing a high activity component to a fluidized unit as physically separate and distinct particles to preferentially decrease the yield of at least a selected hydrocarbon product compared to another hydrocarbon product. Another method includes: providing at least a high activity component comprising a contaminant inhibitor component to a fluidized unit as physically separate and distinct particles to inhibit the adverse effects of at least a contaminant in a feed stock.