Preparation of rare earth nitrates

Details Preparation of rare earth nitrates Preparation of rare earth nitrates

1979-04-05

1980-11-04

Carter, Herbert T.

Chemistry of inorganic compounds

Rare earth compound

423395, C01F 1700

Patent

active

042319978

ABSTRACT:
A process for preparing a rare earth nitrate solution in which rare earth hydroxides containing quadrivalent cerium are dissolved in nitric acid with the addition of hydrogen peroxide. The change in oxidation-reduction E.M.F. may be used to control the addition of peroxide to prevent formation of quadrivalent cerium ions in the nitrate solution.

REFERENCES:
patent: 3761571 (1973-09-01), Woodhead
Schumb et al., "Hydrogen Peroxide", Reinhold Pub. Corp., N.Y. 1955, pp. 375-376.

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