Verfahren zur Rückgewinnung von Jod aus jodierten organischen Verbindungen

摘要

The method proposed is characterized in that, in a first step, the substance to be de-iodized is suspended or dissolved in water in a reactor and mixed with sufficient quantities of organic and/or inorganic bases and, following the addition of a catalyst, the de-iodization carried out at room or elevated temperature in the presence of hydrogen, optionally at elevated pressure. After separating off the catalyst in a second stage, the solution is mixed with an organic and/or inorganic acid and the precipitated de-iodized compound filtered off. The iodide present in the acid filtrate is then oxidized in a third step with an oxidizing agent to iodine which is separated from the aqueous reaction mixture by the usual methods.