Method for photochemical reduction of uranyl nitrate by tri-N-bu

Details Method for photochemical reduction of uranyl nitrate by tri-N-bu Method for photochemical reduction of uranyl nitrate by tri-N-bu

1976-09-07

1978-03-21

Schafer, Richard E.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

423 10, B01J 110, B01D 1104

Patent

active

040802736

ABSTRACT:
Uranyl ion in solution in tri-n-butyl phosphate is readily photochemically reduced to U(IV). The product U(IV) may effectively be used in the Purex process for treating spent nuclear fuels to reduce Pu(IV) to Pu(III). The Pu(III) is readily separated from uranium in solution in the tri-n-butyl phosphate by an aqueous strip.

REFERENCES:
patent: 3120479 (1964-02-01), Dols et al.
patent: 3276850 (1966-10-01), Rainey
patent: 3620687 (1971-11-01), Wilson
Schlea et al., "Uranium (IV) Nitrate as a Reducing Agent for platonium (IV) in the Purex Process". Report #DP-808, 1963.
Carroll, J. C. et al., "The Photoactivated Reduction of Uranium (VI) to Uranium (IV) Nitrates" AEC Report #HW-70543 (1961).
Minc et al. "the Influence of Light on the Absorption Spactra of Uranyl Nitrate in Tributylphosphite." In Nukleonika, vol. 5 pp. 33-45, 1960.
Brzeski, J. "The Influence of Oxygen on the Photosensitivity of Uranyl Nitrate Solutions in Tri--N--butylphosphate." Nukleonika, vol. 6, pp. 649-658, (1961).
Kertes, A. S. et al., J. Inorg. Nucl. Chem. vol. 19, pp. 359-362, 1961.
Karlova et al., "Shipt of Chemical Equilibrium of Solutions by Resonant IR Laser Radiation," In JETP Letters, vol. 22 pp. 222-223, (1975).

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