1983•Unpublished venueOpen access

Dissolution of plutonium metal in HNO/sub 3/-N/sub 2/H/sub 4/-KF

D.G. Karraker

Abstract

Plutonium metal dissolves in HNO/sub 3/-N/sub 2/H/sub 4/.HNO/sub 3/-KF solution to yield a Pu/sup 3 +/ solution without an accompanying precipitation of plutonium oxide solids. The reaction evolves less than 0.2 mole of gas per mole of plutonium dissolved; the gas contains only 3% H/sub 2/. About 10/sup -3/ moles of HN/sub 3/ are produced per mole of plutonium dissolved. Optimum conditions for dissolving both alpha-phase and delta-phase plutonium metal were developed. Possible applications are to the recovery of plutonium metal or the processing of irradiated plutonium metal and alloys.

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Key concepts: Plutonium, Dissolution, Metal, Chemistry, Radiochemistry, Nitric acid, Precipitation, Phase (matter)