Roger wrote: > > When the water is evaporated from a silver ionic solution, the silver ions > > form a compound of silver that reduces to silver oxide. > > Frank: I doubt that silver oxide will form since it is unstable above about > (I don't recall the exact temperature) 150C. And because its range of > stability is at such a modest temperature, in all likelihood, a catalyst > would be needed to have any chance of it forming at all. On the "plus" side, > high surface area ceramics are known to have catalytic activity. Roger
My comment was referring to room temperature. The only reaction I recall at elevated temperature is that silver carbonate gives up the CO2 to form silver oxide again. It is this reversable reaction that is used to remove CO2 from breathable air in space craft. Ag2O + CO2 (in the presence of water) --> Ag2CO3 Above 220 C the silver carbonate reverts back to CO2 and Ag2O. Other than that, silver oxide is stable. frank key -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
