Method for removing iodide compound from organic acid

Details Method for removing iodide compound from organic acid Method for removing iodide compound from organic acid

C - Chemistry, Metallurgy

07

C

C07C 51/54 (2006.01)

Patent

CA 2664293

An iodide compound is adsorbed and removed from an organic acid containing the iodide compound as an impurity by passing the organic acid through a packed bed of a cation-exchange resin having silver ion carried thereon at 50 C or lower. The cation-exchange resin is a macroporous-type resin with an average particle size of 0.3 to 0.6 mm and an average pore size of 15 to 28 nm, and silver ion substitutes for 40 to 60% of the active site.

Selon l'invention, un composé iodure est adsorbé et éliminé d'un acide organique contenant le composé iodure en tant qu'impureté en faisant passer l'acide organique dans un lit à garnissage d'une résine échangeuse de cations qui comprend des ions argent à une température inférieure ou égale à 50 °C. La résine échangeuse de cations est une résine de type macroporeuse qui présente un taille moyenne de particules comprise entre 0,3 et 0,6 mm; une taille moyenne de pores comprise entre 15 et 28 nm; et un taux de substitution d'ions argent compris entre 40 et 60 % du site actif.

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