Wacker-chemie Gmbh

Degussa Aktiengesellschaft

Willibald Dafinger

Klaus Deller

Ludwig Schmidhammer

Helmfried Krause

Eduard Pichl

Roman Hierzegger

Wolfdietrich Gabler

A carrier catalyst containing copper and alkali ions on an annular carrier of surface-active material is defined by the dimensions of the carrier body and the porosity of the finished catalyst. Its total pore volume is 0.6-1.0 ml/g, pores smaller than 4 nm diameter are not present, pores of 8-20 nm diameter constitute at least 80% of the total pore volume and the remainder consists of macropores with a diameter greater than 20 nm (i.e., up to 200 nanometers). The catalyst is suitable for the production of 1,2-dichloroethane by means of the oxychlorination of ethylene.

Cylindrically formed catalyst for the oxychlorination of ethylene

In the process, a copper/rhodium catalyst impregnated with 0.1 to 10.0% by weight, based on the total weight of active charcoal catalyst support and active components, of a water-soluble phosphonium halide is employed for the preparation of trichloroelethylene from perchloroethylene and hydrogen.

Process for the preparation of trichloroethylene

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Emmerting, Germany

Willibald Dafinger