synthesis and characterization of modified resins and their selective sorption towards rhenium from binary (re & mo) solutions

Three amine-functionalized resins were prepared by suspension polymerization of vinyl-benzyl chloride, divinylbenzene, and subsequent amination process. the effect of chain length and cyclic amine on the performance of resins was investigated in a multicomponent system (re mo). different amines were used in the investigation. different analyses such as scanning electron microscopy (sem), fourier transform infrared (ft-ir) spectroscopy, inductively coupled plasma-optical emission spectrometry (icp-oes), kiejdahl’s and volhard’s methods were used to characterize the synthesized resins. the synthesized resins then were assayed in a batch mode using binary solutions of re(vii) and mo to evaluate their efficiency in the selective sorption of rhenium ions. among all investigated resins, resin c revealed better separation properties in acidic solution (ph=1) with the highest sorption capacity up to 46.4 mg re/g and a distribution coefficient of 870 that is more attributed to a steric barrier created against the polymeric molybdenum ions that are larger than objective ions in the studied system.