Chemistry of inorganic compounds – Phosphorus or compound thereof – Elemental phosphorus
Patent
1998-11-20
2000-11-14
Langel, Wayne
Chemistry of inorganic compounds
Phosphorus or compound thereof
Elemental phosphorus
C01B 2504
Patent
active
061466107
ABSTRACT:
Arsenic is removed from elemental phosphorus by treating it with an oxidized form of iodine in a sufficient amount and for a sufficient time to obtain the amount of arsenic reduction desired. When iodine is the source of the oxidized iodine an oxidant is additionally used. An oxidant is optionally used when an oxidized iodine is used. The oxidant also reduces the amount of antimony present in the elemental phosphorus, and a dilute oxidant rinse removes any residual iodine source and also results in a water-white liquid phosphorus.
REFERENCES:
patent: 3645789 (1972-02-01), Mandelkow et al.
patent: 4102976 (1978-07-01), Hiemeleers et al.
patent: 5567474 (1996-10-01), Dover et al.
patent: 5567774 (1996-10-01), Schwindeman et al.
patent: 5989509 (1999-11-01), Gunkel et al.
Liebhafsky, H. A., "Reactions Involving Hydrogen Peroxide, Iodine and Iodate Ion. IV. The Oxidation of Iodine to Iodate Ion by Hydrogen Peroxide," JACS, vol. 53, pp. 2074-2090, Jun. 8, 1931.
Liebhafsky, H. A. and Wu, L.S., Reactions Involving Hydrogen Peroxide, Iodine, and Iodate Ion. V. Introduction to the Oscillatory Decomposition of Hydrogen Peroxide, JACS, vol. 96, No. 23, pp. 7180-7187, Nov. 13, 1974.
Bray, W. C. and Caulkins, A. L., "Reactions Involving Hydrogen Peroxide, Iodine, and Iodate Ion. II. The Preparation of Iodic Acid, Preliminary Rate Measurements," JACS, vol. 53, pp. 44-48, Jan. 12, 1931.
Bray, W.C., A Periodic Reaction in Homogeneous Solution and Its Relation to Catalysis, JACS, vol. 43, No. 6, pp. 1262-1267, Jun. 1921.
Bugenov, E.S., "Impurity Removal from Technical Yellow Phosphorus," Russian Technical Paper, Apr. 2, 1987.
Astakhova, G. V.; Bokareva, S.I.; Talanov, N. D.; and Nisellson, LA., "Purification of Elementary Phosphorus by Fractional Distillation," Zh. Prikl. Khim. (Leningrad) 1973, 4614), 761-4. (English Abstract Only) (No month).
Osumi, Y.; Ishii, F.; Nakane, M.; and Miyake, Y., (Gov. Ind. Res. Inst., Osaka, Japan) "The Preparation of High-Purity Phosphorus. I. Removal of Trace Amounts of Arsenic from Phsophorus," Kogyo Kagahu Zasshi, 68(5); 920-6 (1965) (Japan). (English Abstract Only) (no month).
Baker Patrick C.
FMC Corporation
Langel Wayne
Monroe Bruce M.
Ramstad Polly E.
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