Catalytic naphtha cracking catalyst and process
AssigneeUop LLC
InventorsHayim Abrevaya, Suheil F. Abdo, R. Lyle Patton
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Abstract
A process is disclosed for enhancing the production of light olefins using a catalyst with small pores. The catalyst comprises a molecular sieve having 10 membered rings with channels of limited length. The molecular sieve has a high silica to alumina ratio and has pores sized to limit production of aromatics in the cracking process.
Claims7
A process for selective catalytic cracking of naphtha to ethylene and propylene comprising contacting a naphtha feedstock with a catalyst at reaction conditions to produce ethylene and propylene, the catalyst comprising a molecular sieve having non-intersecting 10 membered ring channels with a dimension from about 0.1 micrometers to about 0.3 micrometers in the channel direction, and having a silicon, to aluminum atomic ratio from about 20 to about 200, wherein the 10 membered rings form elliptical pores with pore index between about 22 Å2 and about 30 Å2 and having a pore mouth, a pore interior and a surface external to the pore.
Dependencies are inferred from the claim text.