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Title: Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate

Abstract

Described is a process for making a calcium/sodium ferrate adduct with sodium ferrate in a divided-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 during operation. 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 material 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 calcium compound to produce a calcium/sodium ferrate adduct. Alternatively the sodium ferrate may be first recovered in a solid form and then reacted with a calcium compound to produce said adduct.

Inventors:
;
Publication Date:
OSTI Identifier:
6507386
Patent Number(s):
US 4451338
Assignee:
Olin Corporation
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 2 May 1983; Other Information: PAT-APPL-490756
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CALCIUM COMPOUNDS; ELECTROLYSIS; FERRATES; SODIUM COMPOUNDS; ADDUCTS; AQUEOUS SOLUTIONS; CHEMICAL PREPARATION; ELECTROCHEMISTRY; ELECTROLYTIC CELLS; SODIUM HYDROXIDES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CHEMISTRY; DISPERSIONS; HYDROGEN COMPOUNDS; HYDROXIDES; IRON COMPOUNDS; LYSIS; MIXTURES; OXYGEN COMPOUNDS; SOLUTIONS; SYNTHESIS; TRANSITION ELEMENT COMPOUNDS; 400400* - Electrochemistry

Citation Formats

Deininger, J P, and Dotson, R L. Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate. United States: N. p., 1984. Web.
Deininger, J P, & Dotson, R L. Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate. United States.
Deininger, J P, and Dotson, R L. Tue . "Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate". United States.
@article{osti_6507386,
title = {Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate},
author = {Deininger, J P and Dotson, R L},
abstractNote = {Described is a process for making a calcium/sodium ferrate adduct with sodium ferrate in a divided-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 during operation. 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 material 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 calcium compound to produce a calcium/sodium ferrate adduct. Alternatively the sodium ferrate may be first recovered in a solid form and then reacted with a calcium compound to produce said adduct.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {5}
}