Chemistry of inorganic compounds – Halogen or compound thereof – Elemental halogen
Patent
1988-07-15
1989-08-15
Sneed, H. M. S.
Chemistry of inorganic compounds
Halogen or compound thereof
Elemental halogen
423500, C01B 714
Patent
active
048572950
ABSTRACT:
A process for the manufacture of iodine, in the presence of a catalyst selected from copper, gold, a transition metal or a compound thereof, characterized in that an aqueous solution of an alkali metal iodide is oxidized--with oxygen, air or other oxygen containing gase--in the presence of carbon dioxide (an alkali metal carbonate and/or bicarbonate being thus formed).
Iodine is generally obtained by oxidation of alkali metal iodides comping from a natural source, such as those contained in Chilean nitrates or in other salt deposits (sea-water included), or having an industrial origin; in the latter case the alkali metal iodide is generally the effluent of different processes which contemplate iodine recovery for economic reasons.
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Gregorio Guglielmo
Paparatto Giuseppe
Montedipe S.p.A.
Myers Helane
Sneed H. M. S.
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