Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1979-03-13
1983-01-25
Dees, Carl F.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252477R, B01J 2108, B01J 2338, B01J 3500
Patent
active
043702619
ABSTRACT:
The carriers contain common active components, namely noble metals of the 8th sub-group or compounds thereof, and as activators alkali metal compounds, alkaline earth metal compounds or cadmium compounds. The carriers, too, consist of common materials, such as silicic acid. A novel feature is to be seen in the shape of the carrier particles which are designed as rod sections having a star-shaped cross section (FIGS. 1 to 7) or as ribbed rods (FIG. 8). In relation to the apparent density and thus in relation to the amount of noble metal employed, a considerably higher space-time yield is reached than with carrier particles of a conventional shape.
REFERENCES:
patent: 2408164 (1946-09-01), Foster
patent: 2644800 (1953-07-01), Mottern et al.
patent: 3764565 (1973-10-01), Jacobs et al.
patent: 3857680 (1974-12-01), Porta et al.
Heck Gunther
Quadflieg Therese
Roscher Gunter
Wunder Friedrich
Dees Carl F.
Hoechst Aktiengesellschaft
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