Catalysts for oxychlorination of ethylene to 1,2-dichloroethane and methods of preparation thereof
AssigneeBASF SE
InventorsJonglack KIM, Joseph John ZAKZESKI, Elena PARVULESCU, Hannes BISCHOF, Rolf TOMPERS, Keith KRAMER
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Abstract
Disclosed are catalyst compositions for the oxychlorination of ethylene to dichloroethane (DCE) capable of providing high ethylene conversion, high dichloroethane selectivity and high crude purity. Also disclosed are methods of preparing and using the catalyst compositions. Described herein is a catalyst composition comprising a support and catalytic metal compounds on the support. The catalytic metal compounds can include a copper compound; and a zirconium compound.
Claims25
A catalyst composition comprising:
- a support;
- and
- catalytic metal compounds on the support, the catalytic metal compounds comprising:
- a copper compound;
- and
- a zirconium compound,
- wherein the support has a BET surface of about 50 m2/g to about 250 m2/g.
18-21. (canceled)
A catalyst composition comprising:
- a support;
- and
- catalytic metal compounds on the support, the catalytic metal compounds comprising:
- a copper compound;
- and
- a zirconium compound,
- wherein the support comprises a particle size distribution such that (a) about 90 percent to about 100 percent by volume of the particles are less than about 150 μm, (b) about 50 percent to about 60 percent by volume of the particles are less than about 75 μm;
- and (c) about 20 percent to about 35 percent by volume of the particles are less than about 45 μm, as measured at about 20° C. to about 25° C. and about 1 atm by a Malvern Instruments laser diffraction analyzer wherein a 5 g sample of the support is dispersed in 100 mL of deionized water with a magnetic stirrer for 1 min to form a suspension and 4 mL of the suspension is diluted with 130 mL of deionized water and analyzed at 2500 rotations/min with the analyzer.
23-41. (canceled)
A method of forming a catalyst composition, comprising:
- dissolving a copper compound and at least one compound comprising zirconium in a solvent with agitation and at a temperature of about 20° C. to about 80° C. to form a solution;
- dosing the solution onto a support comprising a BET surface of about 50 m2/g to about 250 m2/g, wherein the support is rotated at about 50 rotations per minute (rpm) to about 150 rpm;
- and
- drying the coated support to remove free water for about 1 hour to about 20 hours at a temperature of about 75° C. to about 180° C. to form the catalyst composition.
43-62. (canceled)
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Dependencies are inferred from the claim text.