Selective hydrogenation of polyenes
AssigneePhillips Petroleum Company
InventorLewis E. Drehman
Life of this patent
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Abstract
A feedstock comprising olefinic hydrocarbons having more than one double bond per molecule is selectively hydrogenated to produce hydrocarbons having less unsaturation relative to the feedstock by contacting the feedstock in the presence of steam and hydrogen with a catalyst comprising a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin. The feedstock can be produced by reforming paraffin and cycloparaffin hydrocarbons in the presence of steam with a catalyst comprising a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin.
Claims10
A process comprising:
- contacting a feedstock with a first catalyst in a first zone in the presence of steam under conditions to reform said feedstock to produce a reformate comprising olefins and diolefins, said feedstock comprising paraffin and cycloparaffin hydrocarbons, said first catalyst comprising a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin;
- and contacting said reformate with a second catalyst in a second zone in the presence of steam and hydrogen and under hydrogenating conditions to selectively hydrogenate said diolefins contained in said reformate to reduce the unsaturation thereof, said second catalyst consisting essentially of a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin.
Dependencies are inferred from the claim text.