mixture of rh powder+insoluble iron oxide powder

[arthur kierski]

i have a mixture of rh +an iron oxide powder which is very difficult to dissolve in acids---i need help to reduce this iron oxide to iron, in order to dissolve this iron in hcl or h2so4 and stays with the rh powder behind-------
in other words:how to dissolve iron oxide powderto iron??
thanks for any help or sugestion
Arthur

 

[butcher]

How about adding a bit of platinum?

from what I understand (reading Hokes), when even a bit of platinum is in nitric acid Iron will readily dissolve in nitric acid, where normally the nitric will not attack Iron.

 

[lazersteve]

Arthur,

Depending on how much powder you have you may be able to use a furnace and a source of carbon to reduce the iron oxides to iron then dissolve out the iron with your choice of acids.

Steve

 

[arthur kierski]

Steve,it is not much powder but the other half is rhodium------i have a furnace and will do this---
could i use some flour as a source of carbon?
thanks again as always
Arthur

 

[arthur kierski]

Butcher,adding pt is too expensive and the powder is not in nitric-----
thanks anyway for your reply
regards
Arthur

 

[butcher]

Pt would not dissolve in the nitric, and I was thinking of just stirring with a Pt wire may just do the trick?