Some evidence has suggested that the catalyst s function may be restored through the use of a series of solvent washes.
2.
Sulfuric & nitric acid aren't all that hazardous if handled properly, and " wouldn't want to inhale those fumes " isn't an issue if you have a exhausting fume cabinet, as would most who are doing such procedures .-Regarding nitration, yes, that can lead to explosive compounds, but generally you would remove most of the organic material by soap & water / solvent washes prior to the acid bath.
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