Method for manufacture of single crystals .beta.-PbO.sub.2 and s

Details Method for manufacture of single crystals .beta.-PbO.sub.2 and s Method for manufacture of single crystals .beta.-PbO.sub.2 and s

1974-11-26

1976-05-25

Vertiz, Oscar R.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 93, C01G 2102

Patent

active

039594530

ABSTRACT:
Single crystals of .beta.-PbO.sub.2 are formed when an intermediate oxide of lead represented by the generic formula, PbO.sub.x wherein x denotes a value falling in the range of 1.4 to 1.7, is heated in an aqueous alkali hydroxide solution under a pressure exerted by use of oxygen or an oxygen-containing gas. The single crystals are in the shape of slender rods, have a black color and have a metallic gloss.

REFERENCES:
patent: 1915724 (1933-06-01), Finkelstein
patent: 3033908 (1962-05-01), Darland, Jr.
patent: 3644090 (1972-02-01), Beecken
Richard A. Baker, "Formation of .alpha. or .beta. lead dioxide during the anodic oxidation of lead" J. Electrochem. Soc. 109, 337-338, (1962).
S. S. Tolkachev, "Structure of .beta.-PbO.sub.2," Vestnik Leningrad Univ. 13, No. 4, Ser. Fiz. i Khim, No. 1, 152-153, (1958).
Kordes, "Characterization of Positive Plates in Lead Batteries through X-ray irradiation," Chem. Ingr. Tech. 38(6), 638-642 (1966) (Ger.).

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