Slaughlin79
Well-known member
I’m back to ask a question bc this precipitation has me stumped at what it could be. Okay I have a solution that consists of leached metals from catalytic converts using HCl and bleach and another with HCl and H2O2 and both I’ve used copper and zinc for reduction. For one I can’t believe how much copper the zinc has cemented out,I would’ve never guessed that a catalytic converter would have that much copper. But the thing stumping me is I’m getting a white silver precipitate when using the copper that has began to darken like silver does when reacting with light after precipitation.
I know a small amount of silver can be digested in AR but in general silver will not dissolve in a chloride solution and there would be no point in using silver as a catalyst bc it probably wouldn’t last a 1000 Miles I would imagine bc of oxidation. Everything I’ve read about refining metals and about what a catalytic converter contains tells me there’s no way it can be silver but what I’ve seen with my own eyes,the way silver looks and acts like when in precitated form tells me different. Adding water or HCl makes no difference. I was going to dissolve it all and eventually will to separate the pgms amd then I noticed it has gotten darken and I don’t mean a little change where I couldve been mistaken,no it was white silver and has turned dark gray. With it being copper I’m using to reduce the metals than it has to be something higher but I’m relatively new can’t find anything on it. Anyone ever seen anything like this before? Thanks
I know a small amount of silver can be digested in AR but in general silver will not dissolve in a chloride solution and there would be no point in using silver as a catalyst bc it probably wouldn’t last a 1000 Miles I would imagine bc of oxidation. Everything I’ve read about refining metals and about what a catalytic converter contains tells me there’s no way it can be silver but what I’ve seen with my own eyes,the way silver looks and acts like when in precitated form tells me different. Adding water or HCl makes no difference. I was going to dissolve it all and eventually will to separate the pgms amd then I noticed it has gotten darken and I don’t mean a little change where I couldve been mistaken,no it was white silver and has turned dark gray. With it being copper I’m using to reduce the metals than it has to be something higher but I’m relatively new can’t find anything on it. Anyone ever seen anything like this before? Thanks