Chemistry: electrical and wave energy – Processes and products
Patent
1983-07-01
1984-03-06
Tung, T.
Chemistry: electrical and wave energy
Processes and products
204283, C25B 100
Patent
active
044352565
ABSTRACT:
Described is a process for making potassium ferrate by the formation of sodium ferrate in a membrane-type electrolysis cell. The anolyte chamber of the cell is charged with an aqueous solution of sodium hydroxide and a sodium ferrate-stabilizing proportion of at least one sodium halide salt. The anolyte chamber additionally contains ferric ions [Fe(III)]. The catholyte chamber contains an aqueous sodium hydroxide solution. The source of ferric ion in the anolyte may be either an iron-containing anode or at least one iron-containing compound present in the anolyte solution or both. The preferred membrane material for separating the anolyte chamber from the catholyte chamber is comprised of a gas- and hydraulic-impermeable, ionically-conductive, chemically-stable ionomeric film (e.g., a cation-exchange membrane) with carboxylic, sulfonic or other inorganic exchange sites. Sodium ferrate is prepared in the anolyte chamber by passing an electric current and impressing a voltage between the anode and cathode of the cell. During electrolysis, sodium ferrate forms in the aqueous sodium hydroxide anolyte. This anolyte is reacted with a potassium compound to product potassium ferrate [Fe(VI)]. Alternatively, the sodium ferrate may be first recovered in a solid form and then reacted with a potassium compound to produce potassium ferrate.
REFERENCES:
patent: 669441 (1901-03-01), Frasch
patent: 2275223 (1942-03-01), Hardoen
patent: 2455696 (1948-12-01), Mosesman
patent: 2758090 (1956-08-01), Mills et al.
patent: 2835553 (1958-05-01), Harrison et al.
patent: 2967807 (1961-01-01), Osborne et al.
patent: 3632802 (1972-01-01), De Miller et al.
patent: 3904496 (1975-09-01), Harke et al.
patent: 4036714 (1977-07-01), Spitzer
patent: 4201637 (1980-05-01), Peterson
J. Tousek, "Electrochemical Production of Sodium Fenate", Collection Czechoslov Chem. Commun., vol. 27, pp. 914, 919 (1962).
Miller, "The Preparation, Determination, and Analytical Applications of Iron (VI)", Analytical Chemistry, p. 3343 B.
Mellor, "A Comprehensive Treative on Inorganic & Theoretical Chemistry", vol. XII, pp. 929-937, (1952).
Grube et al., Zeitschrift Fur Electrochemie, vol. 26, No. 7/8, 21/22 pp. 153-161, 459-471, (1920).
Chemical Abstracts 65:16467, 1966.
Helferick et al., Z. Anorg. Allg. Chemie, 263, pp. 169-174, 1956.
Pick, Zeitschrift Fur Electrochemie, 7, pp. 713-724, 1901.
Scholder et al., Z. Anorg. Allg. Chemie, vol. 282, pp. 262-279, 1955.
Andett. et al., Inorganic Chemistry, vol. 11, No. 8, pp. 1904-1908, (1972).
J. M. Schreyer, "Higher Valence Compounds of Iron", Doctoral Thesis at Oregon State College, Jun. 1948.
Chemical Abstracts 86:78488K, 1977.
Chemical Abstracts 89:135578c, 1978.
Kirk-Othmer Encyclopedia of Chemical Technology, 2 Edition, vol. 12, p. 40, 1967.
Goff et al., J. of the American Chemical Society, vol. 93:23, pp. 6058-6065, No. 17, 1971.
Clements Donald F.
Oaks Arthur E.
Olin Corporation
Tung T.
LandOfFree
Process for making potassium ferrate [Fe(VI)] by the electrochem does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for making potassium ferrate [Fe(VI)] by the electrochem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making potassium ferrate [Fe(VI)] by the electrochem will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-740287