含α-氨基烷基膦基螯合树脂的合成及初步评价

Laurent Ménard, Laurent Fontaine, Jean-Claude Brosse
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引用次数: 14

摘要

以交联聚胺甲基苯乙烯为原料,制备了含有α-氨基苯基膦酸基团或α-氨基吡啶基膦酸基团的螯合聚合物。化学改性是通过添加膦酸二乙酯,然后水解(卡巴尼克-菲尔兹反应)或通过在相应的聚亚胺上添加磷酸来实现的。对Ca2+和Co2+吸附能力的初步评估表明,所制备的聚合物表现出与商业树脂(Duolite ES 467)相似或略高的螯合性能。还发现含有α-氨基吡啶基膦酸基团的聚合物对Co2+的亲和力明显高于含有α-氨基苯基膦酸基团的树脂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis and preliminary evaluation of chelating resins containing α-aminoalkylphosphonic groups

Chelating polymers containing an α-aminobenzylphosphonic acid group or an α-aminopyridylphosphonic acid group have been prepared starting with a crosslinked polyaminomethylstyrene. Chemical modification was achieved via the addition of diethyl phosphonate followed by hydrolysis (Kabachnick-Fields reaction) or by the addition of phosphorous acid onto the corresponding polyimines. Preliminary evaluation of the sorption capacities towards Ca2+ and Co2+ have shown that the prepared polymers exhibit similar or slightly greater chelating properties than a commercial resin (Duolite ES 467). It was also found that polymers containing an α-aminopyridylphosphonic acid group displayed a significant affinity towards Co2+ contrary to resins containing an α-aminobenzylphosphonic acid group.

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