Sciencemadness Discussion Board

seperate Mn oxides and Mn metal

mouseear - 5-5-2008 at 12:52

I have a stainless steel base filter and have Mn oxides formed on the surface (not sure the exact form, assume MnO2). Is there a way to measure (remove) the Mn oxides on the surface while not attacking the Mn metal in the base?

I am doing the hot NaOH (10%, 100C) extraction, and seems not dissolve the Mn oxides. Any suggestions? Should I keep try it or it will not work at all? I was also wondering about the reduction process.

Any ideas are highly appreciated!

Ozone - 5-5-2008 at 13:36

See here:

http://www.sciencemadness.org/talk/viewthread.php?tid=8319&a...

I thought your filter was SS, are you worried about Mn in the alloy? If so, this shouldn't hurt.

Do you wish to quantify the Mn?

Cheers,

O3

mouseear - 6-5-2008 at 10:27

Yeah, my filter is SS. ONLY remove the Mn oxides on the SS surface (Need quantify). Should NOT dissolve any Mn in the alloy.
If I use H2O2 + HCl, will it dissolve the Mn in the alloy?

Thanks.