palladium sulfide

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Dissolve in aqua regia, filter from free S8, and proceed classically if you want a low sulfur product.

Otherwise, roast in air to PdO then melt. SO2 and SO3 are products. The only way to remove the S content to acceptable levels (at least analytically/metallurgically) is heating in a Pd foil boat with H2 until no more H2S is produced.
 
Thanks a lot for you advice

but please am not understand what do you mean by roast in air ?

i understand roasting is heating for high temp about 400 hundred C degree

otherwise may i dissolve in Hcl+ H2O2 instead of aquaregia in this case?
 
HCl with a high concentration of H2O2 many times replaces AR (need a try)
"30 and more recovery procedures for precious metals"
 
but what if i add only h2o2 ?

i mean h2o2+PdS --------> ????

is it PdSO4 ? or PdO +S or Pd+S+O ??

i already try but i fond it make sound of bubbles i mean there is gas come from reaction

but it is not So3 or sulfur oxide there is no smell
 
unless you have a way to turn the matte over and agitate it, there's no hope for it unless you granulate and start over WITHOUT the sulfur.
 
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