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Synthesis of macrocyclic polyphenol resin by methylene crosslinked calix[4]arene (MC-[4]H) for the adsorption of palladium and platinum ions

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Abstract

A novel macrocyclic polyphenol resin, a calix[4]arene derivative, namely, a methylene crosslinked calix[4]arene (MC-[4]H), was successfully synthesised by demethylation of MC-[4]CH3. MC-[4]CH3 was prepared by crosslinking [4]CH3 with s-trioxane under acidic conditions. Methylation of calix[4]arene ([4]H) is strongly required to protect the oxygen atoms on the phenolic groups. It was found that the adsorption of palladium and platinum optimally occurred at low pH. The maximum loading capacity of palladium on the resin was found to be 0.41 mol kg−1 while that of platinum was 0.23 mol kg−1. The stoichiometries of metal ions were found to be 5 : 1 of the calix[4]arene unit in MC-[4]H to Pd(II) and 3 : 1 of that in MC-[4]H to Pt(IV), respectively.

Graphical abstract: Synthesis of macrocyclic polyphenol resin by methylene crosslinked calix[4]arene (MC-[4]H) for the adsorption of palladium and platinum ions

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Publication details

The article was received on 24 Jan 2019, accepted on 29 Apr 2019 and first published on 10 May 2019


Article type: Paper
DOI: 10.1039/C9NJ00435A
New J. Chem., 2019, Advance Article

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    Synthesis of macrocyclic polyphenol resin by methylene crosslinked calix[4]arene (MC-[4]H) for the adsorption of palladium and platinum ions

    Y. Priastomo, S. Morisada, H. Kawakita, K. Ohto and Jumina, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ00435A

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