Synthesis and characterization of valonea tannin resin and its interaction with palladium (II), rhodium (III) chloro complexes☆
作者： Mustafa Can , Emrah Bulut , Ahmet Örnek , Mahmut Özacar
DOI: 10.1016/J.CEJ.2013.01.043
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摘要: Abstract Valonea tannin (TA) and formaldehyde condensation reaction was carried out under alkaline condition to prepare the valonea tannin–formaldehyde resol resin (TAR). Obtained used as adsorbent for recovery of palladium (II) rhodium (III) ions from chloride-containing solutions. This kind very simple useful generating little secondary wastes. Interaction adsorption also investigated: Chloropalladium species were reduced Pd(0), while hydroxyl groups TAR oxidized during adsorption. Proposed aquachlororhodium mostly takes place via ligand exchange mechanism. TAR, Rh-adsorbed Pd-adsorbed characterized by scanning electron microscopy, energy-dispersive spectrometry, X-ray diffraction spectroscopy, Fourier transform infrared–attenuated total reflection spectroscopy.
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