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Oxygen potential measurements of Cm$$_{0.09}$$Pu$$_{0.91}$$O$$_{2-x}$$ by EMF method

Otobe, Haruyoshi  ; Akabori, Mitsuo; Arai, Yasuo

The dependence of the oxygen potentials on oxygen nonstoichiometry (${it x}$) and temperature of Cm$$_{0.09}$$Pu$$_{0.91}$$O$$_{2-x}$$ was measured by electromotive force (EMF) measurements. The coulomb titration has been made for the sample at the intervals of 40 K between 1173 and 1333 K over the ${it x}$ range of 0.018 $$leq$$ ${it x}$ $$leq$$ 0.053. The oxygen potentials decreased gradually from -31.02 to -117.48 kJmol$$^{-1}$$ with increasing ${it x}$ from 0.018 to 0.045, and the rapidly decreased from -117.48 to -283.74 kJmol$$^{-1}$$ up to 0.053. The temperature dependence of the oxygen potentials was also measured between 1173 and 1333 K for several constant ${it x}$ values. The temperature dependence was almost linear over the ${it x}$ and temperature ranges concerned.

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Category:Chemistry, Inorganic & Nuclear

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