Shape selective hydrogenation of aromatics over modified non-acidic platinum/ZSM-5 catalysts
AssigneeMobil Oil Corporation
InventorRalph M. Dessau
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Abstract
Non-acidic tin-, lead-, or indium-modified Pt/ZSM-5 catalysts are effective catalysts for the shape selective preferential hydrogenation of certain aromatic hydrocarbons in admixture with others. These catalysts can be used to reduce the aromatic content of gasoline and distillates.
Claims13
A process for the shape selective preferential hydrogenation of certain aromatic components in a mixture of aromatic hydrocarbonaceous components based on molecular size comprising:
- hydrotreating a feed containing a mixture of aromatic hydrocarbonaceous components under hydrotreating conditions at a temperature of from about 100.degree. C. to about 325.degree. C. in the presence of a non-acidic crystalline microporous ZSM-5 catalyst containing a Group VIII metal modified with a metal selected from a member of the group consisting of tin, lead, or indium for a time sufficient to convert aromatic components having a molecular size sufficient to pass through said catalyst to cycloalkanes thereby producing an effluent with a reduced aromatic content.
A process for the shape selective preferential hydrogenation of certain aromatic components in a reformate containing a mixture of aromatic hydrocarbonaceous components based on molecular size comprising:
- hydrotreating a feed containing a mixture of aromatic hydrocarbonaceous components under hydrotreating conditions at a temperature of from about 100.degree. C. to about 325.degree. C. in the presence of a non-acidic crystalline microporous ZSM-5 catalyst containing platinum modified with tin for a time sufficient to convert aromatic components having a molecular size sufficient to pass through said catalyst to cycloalkanes thereby producing a reformate effluent with a reduced aromatic content.
Dependencies are inferred from the claim text.