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US 12,551,874 B2Granted
MFI zeolite and its uses for production of light olefins and/or aromatics
AssigneeUop LLC
InventorsDeng-Yang Jan, Jaime G. Moscoso, Lijun Xu, Xi Zhao
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Abstract
An improved MFI zeolite having low aluminum occupation at intersection sites characterized by an ortho-xylene to para-xylene uptake ratio of 0.1 to about 0.55. Processes for converting hydrocarbon or oxygenate to a product comprising light olefins and/or aromatics using the improved MFI zeolite as catalyst are also disclosed. Para-xylene in the product may be greater than about 24% of the xylenes.
Claims13
An improved MFI zeolite composition in the calcined and ion-exchanged form comprising:
- a SiO2/Al2O3 ratio of from about 60 to about 600, and
- having low aluminum occupation at intersection sites characterized by an ortho-xylene to para-xylene uptake ratio of no less than 0.1 and no more than about 0.55.
A process for conversion of hydrocarbon to product comprising:
- contacting a feedstream comprising hydrocarbon with a catalyst;
- converting the feedstream to a product at reaction conditions, and
- recovering a product comprising light olefins, aromatics, or mixtures thereof,
- wherein the catalyst comprises an improved MFI zeolite comprising in the calcined and ion-exchanged form a SiO2/Al2O3 ratio of from about 60 to about 600 and having low aluminum occupation at intersection sites characterized by an ortho-xylene to para-xylene uptake ratio of no less than 0.1 and no more than about 0.55.
1 more element
Dependencies are inferred from the claim text.