For FCC resid processing, USY zeolite is perferred because of its superior hydrothermal stability, vanadium resistance and cokeselectivity compared to conventional zeolites.
The coking inhibitors not only inhibit the homogeneous and heterogeneous coke deposition processes but also influence pyrolysis product distribution and ethylene selectivity as well.
它们不但抑制均相、非均相结焦过程，而且会影响裂解产物分布和提高乙烯选择性。
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FCC catalysts using silica sol as the binder features improved selectivity to coke and higher resistance to attrition. strength of the catalysts can be enhanced by adding surf…