| http://www.w3.org/ns/prov#value | - oxide in a reaction medium which does not contain halogen ions, have discovered that it is possible to achieve this goal through the use of a catalyst comprising a metallic or carrier supported platinum group metal catalyst onto which an organic halogen compound which is insoluble in water, which compound excludes compounds which contain no halogen other than fluorine, has been adsorbed or a plati
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