Question

what is the use of zsm-5

Answer 1

ZSM-5, Zeolite Socony Mobil–5 (framework type MFI from ZSM-5 (five)), is an aluminosilicate zeolite belonging to the pentasil family of zeolites. Its chemical formula is NanAlnSi96–nO.

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Answer 2

The demonstrated performance of ZSM-5 in over 35 cracking units is reviewed. The main features of ZSM-5 are its high activity and stability, favorable selectivity, metals tolerance and flexibility, particularly when used as an additive catalyst. ZSM-5 cracks and isomerizes low octane components in the naphtha produced by the faujasite cracking catalyst. As a result C3 and C4 olefins are produced and gasoline compositional changes occur which explain its increased research and motor octanes. A model was developed which predicts ZSM-5 performance in an FCC unit. Discussed is how this model calculates ZSM-5 activity, gasoline research and motor octane increases and catalyst management policies. Also discussed are ways to utilize ZSM-5 and how its use permits reoptimization of not only the FCC unit but the entire refinery.

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