My concern relates to the practice and effectiveness of cleaning gun barrels with 3% Hydrogen Peroxide. The folks that I've contacted at a peroxide manufacturing plant and my searches on the internet so far have not produced any answers...
My question pertains to the effect that stabilized 3% Hydrogen Peroxide has on Lead, when combined at ambient (appx. 75 F) temperature. A crude experiment of my own, involving placing a small (1g) oxide-free Lead shaving in a ceramic crucible and covering with appx. 2oz of Hydrogen Peroxide, resulted in about 36 hours of "activity" wherein the Peroxide bubbled vigorously on the surface of the Lead. At the end of this time period the Lead showed no visible signs of oxidation, and still weighed 1g. (my scales are crude...+/- 0.1) The assumption is that the gas given off during this reaction was Oxygen, the how and why is a mystery to me.
My contact at the manufacturing plant informed me that Hydrogen Peroxide, at concentrations <8% will be catalyzed by Lead, and at concentrations >8%, will, conversely, oxidize the Lead. This makes no sense to me. First of all, doesn't a calalyzing reaction require three
components, (a catalyst and two
The combination of Lead as a catalyst, and Hydrogen Peroxide as a single reactant, doesn't meet this criteria. Secondly, the explanation that the reaction (whatever kind it may be) completely "reverses" itself, based on the concentration of the Peroxide, seems uh....unlikely.
Any help in understanding what is actually happening would be greatly appreciated.