C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 53/08 (2006.01) C07C 51/47 (2006.01) C07C 51/487 (2006.01) C07C 51/493 (2006.01) C07C 51/573 (2006.01) C07C 53/12 (2006.01) C07C 67/56 (2006.01) C07C 69/14 (2006.01)
Patent
CA 2329817
A method for the reduction in iodine content in a mixture, particularly in a mixture of carboxylic acids and/or car- boxylic anhydrides with alkyl iodides and/or hydriodic acid, comprises contacting the organic medium in the vapour phase at elevated temperature with a metal salt dispersed on activated charcoal. The metal salt may be a carboxylate salt, a carbonate, an oxide, a hydroxide and any other salt, which may react with the organic medium to give a metal carboxylate salt. The metal may be a main group ele- ment, a lanthanide, an actinide, zinc and copper. This pro- cess converts alkyl iodide compounds converted to their corresponding carboxylate esters, while the iodine is bound in the purification mass as inorganic iodide.
Borden Ladner Gervais Llp
Haldor Topsoe A/s
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