From an application point is the Arberitsdruck the silver process in the reaction zone C 10 3 to 10 6 Pa, preferably 10 4 to 5 ??? 10 5 Pa, more preferably from 10 4 to 2 ??? 10 5 Pa and particularly preferably from 0.5 ??? 10 5 Pa to 1 amount to, 8 ??? 10 5 Pa. [0152] [0152] Die Temperatur des Reaktionsgasgemischs C (der Begriff des Reaktionsgasgemischs C umfasst in vorliegender Anmeldung alle in