Catalyst composition for oxychlorination

Details Catalyst composition for oxychlorination Catalyst composition for oxychlorination

2011-03-08

2011-03-08

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C502S261000

Reexamination Certificate

active

07902411

ABSTRACT:
The present invention relates to a catalyst composition for the oxychlorination of ethylene, comprising a mixture of metal salts on a support, where said metal salts are applied to the support in such ratios that the catalyst composition comprisesa) from 3 to 12% by weight of copper as copper salt,b) from 0 to 3% by weight of an alkaline earth metal as alkaline earth metal salt,c) from 0 to 3% by weight of an alkaline metal as alkaline metal salt,d) from 0.001 to 0.1% by weight, preferably from 0.005 to 0.05% by weight, of at least one metal selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum, and/or from 0.0001 to 0.1% by weight, preferably from 0.001 to 0.05% by weight, of gold, as corresponding metal salt or tetrachloroauric acid,where all percentages by weight are based on the total weight of the catalyst including support material.The invention further provides a process for preparing 1,2-dichloroethane by oxychlorination of ethylene in the presence of the above catalyst composition as catalyst.

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Sai Prasad et al., Parameter Estimation in a Fixed-Bed Reactor Operating under Unsteady State: Oxychlorination of Ethylene, Industrial and Engineering Chemistry Research, (2001), 40 (23), 5487-5495.

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