Catalyst and process for oxychlorination of ethylene to dichloroethane
AssigneeOxy Vinyls, LP
InventorKeith Kramer
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Abstract
In an oxychlorination process of the type where ethylene is converted to 1,2-dichloroethane in the presence of a supported copper catalyst, the improvement comprising: the use of a supported catalyst prepared by (i) impregnating, within a first step, an alumina support with a first aqueous solution including copper, an alkaline earth metal, and an alkali metal to thereby form a first catalyst component; and (ii) impregnating, within a subsequent step, the first catalyst component with a second aqueous solution including copper and alkaline earth metal, where the second aqueous solution is substantially devoid of alkali metal, to thereby form the supported catalyst.
Claims18
A process for producing a catalyst for the oxychlorination of ethylene to 1,2-dichloroethane, the process comprising the steps of:
- (i) impregnating, within a first step, an alumina support with a first aqueous solution including copper, an alkaline earth metal, and an alkali metal to thereby form a first catalyst component, wherein the first aqueous solution provides the first catalyst component with an alkali metal concentration of greater than 0.5 weight percent;
- and
- (ii) impregnating, within a subsequent step, the first catalyst component with a second aqueous solution including copper and alkaline earth metal, where the second aqueous solution is at least substantially devoid of the alkali metal, to thereby form the supported catalyst, where said second aqueous solution includes an alkaline earth metal to copper molar ratio of greater than 0.19, wherein the concentration of alkali metal within the second aqueous solution is less than that amount that would provide the supported catalyst with an additional alkali metal concentration of 0.5 weight percent.
Dependencies are inferred from the claim text.