Degussa Aktiengesellschaft

Degussa-Huels Aktiengesellschaft

Hans Lansink Rotgerink

Thomas Tacke

Reinhold Brand

Peter Panster

Helmfried Krause

Herbert Mueller

Francis P Daly

Uwe Ohlrogge

A catalyst for the dehydrogenation of C.sub.6 -C.sub.15 paraffins is disclosed. The catalyst contains, on support, at least one platinum group component, at least one promoter component from the group tin, germanium and lead, and at least one additional modifier. The additional modifier contains at least one alkaline earth metal. The stability of the catalyst is essentially higher than that achieved by conventional use of an alkali metal.

Catalyst for the dehydrogenation of C.sub.6 -C.sub.15 paraffins and to a

A catalyst for the dehydrogenation of C6.sub.6 -C.sub.15 paraffins is disclosed. The catalyst contains, on a support, at least one platinum group component, at least one promoter component from the group tin, germanium and lead, and at least one additional modifier. The additional modifier contains at least one alkaline earth metal. The stability of the catalyst is essentially higher than that achieved by conventional use of an alkali metal.

A catalyst and method of its production for use in making vinyl acetate monomer. The carrier is impregnated with a basic solution and a solution containing gold salts and palladium salts and finally impregnated with alkali acetate. The activity and selectivity of the catalyst, its mechanical strength, the noble-metal adhesion and the dispersion of noble metal on the carrier can be improved if the carrier is impregnated in a pretreatment with salts containing as cation elements of groups IA, IIA, IIIA and IVB of the periodic table and as anions elements of group VIIA or complex anions such as nitrate, sulfate or anions of organic acids such as acetate and lactate and is subsequently dried and calcined at temperatures of at least 160.degree. C.

Catalyst, method of its production and its use for the production of

Catalytic reforming of C.sub.9 + containing naphtha with a high yield of BTX is disclosed. Naphtha is converted under customary reforming conditions on a catalyst which contains at least one platinum group metal at least one metal of the group IV B, and at least one halogen component on an oxidic carrier.

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Glattbach, Germany

Hans Lansink Rotgerink