Catalyst for making para-xylene
AssigneeShell Oil Company
InventorLynn H. Slaugh
Life of this patent
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Abstract
Isobutylene is selectively converted to para-xylene over a coupling catalyst consisting essentially of a neutral or weakly acidic support impregnated with a non-halogen containing water soluble rhenium compound and an alkali metal hydroxide or stannate and then reduced with hydrogen at elevated temperatures.
Claims6
A catalytic composition which is prepared by a process which consists essentially of impregnating a neutral or weakly acidic support with an aqueous solution of a non-halogen containing water soluble rhenium compound before or after impregnating the support with an alkali metal hydroxide or stannate, with the proviso that the support is calcined after impregnation with said rhenium compound, and then reducing the impregnated support with hydrogen at elevated temperatures sufficient to reduce the rhenium component to its metallic state while leaving the alkali metal hydroxide or stannate largely unreduced.
The catalytic composition of claim 11 wherein the support is impregnated with said rhenium compound, calcined and then impregnated with said alkali metal hydroxide or stannate.
Dependencies are inferred from the claim text.