取代苄基苯酚“单/双取代混合”协萃的可能性与机理思考
Synergistic Extraction of Mono-/Di-Substituted Mixture Benzylphenols: Possibilities and Mechanistic Insights
DOI: 10.12677/ms.2026.1610194, PDF,   
作者: 张甜甜：兰州交通大学，国家绿色镀膜技术与装备工程技术研究中心，甘肃 兰州；中国科学院上海有机化学研究所，先进氟氮材料全国重点实验室，上海；林荣文, 余东海, 向绍基, 宗国强：中国科学院上海有机化学研究所，先进氟氮材料全国重点实验室，上海；郑 文：武汉朋和科技有限公司，湖北 武汉；王成龙*：兰州交通大学，国家绿色镀膜技术与装备工程技术研究中心，甘肃 兰州
关键词: 取代苄基苯酚；4-叔丁基-2-(α-甲基苄基)苯酚；铷；铯；协同萃取；超分子自组装；单/双取代混合物；Substituted Benzylphenols； 4-Tert-Butyl-2-(α-methylbenzyl)phenol (t-BAMBP)； Rubidium； Cesium； Synergistic Extraction； Supramolecular Self-Assembly； Mono-/Di-Substituted Mixture
摘要: 铷、铯因离子半径与化学性质极为相近，高效分离是分离化学的难点。取代苄基苯酚类尤以4-叔丁基-2-(α-甲基苄基)苯酚(t-BAMBP)及其相关衍生物借助“酚盐–Cs+超分子聚集体”识别机制成为铷铯溶剂萃取的研究主线，近年协萃研究集中于t-BAMBP与异类萃取剂(如：胺、有机磷)的组合。本文提出一种尚未被系统研究的设想：将t-BAMBP (简称A)与其双取代衍生物4-(叔丁基)-2,6-双(1-苯基乙基)苯酚(简称B)混合，同种分子家族内可否因“结构互补自组装”而产生一定的协同？文章从阳离子交换–超分子自组装视角给出机理思考，并以已开展的C1~C9溶解度/相行为筛查与不同钾离子浓度对Rb 4 ppm/Cs 3 ppm料液的干扰初探作为旁证。需要说明：本文为观点性文章，所涉协萃性能均为基于文献与物性数据的假说，尚待实验验证。
Abstract: Rubidium and cesium, by virtue of their nearly identical ionic radii and closely overlapping chemical behavior, pose a long-standing challenge for efficient separation in separation chemistry. Among substituted benzylphenols, 4-tert-butyl-2-(α-methylbenzyl)phenol (t-BAMBP) and its related derivatives have become the central paradigm for Rb/Cs solvent extraction, operating through a phenolate-Cs⁺ supramolecular-aggregate recognition motif. Synergistic extraction in this system has, to date, been explored almost exclusively by pairing t-BAMBP with structurally dissimilar extractants (e.g., amines, organophosphorus acids). Here we advance a hitherto-unexamined hypothesis: that co-mixing t-BAMBP (A) with its bis-substituted derivative, 4-(tert-butyl)-2,6-bis(1-phenylethyl)phenol (B), may elicit a measurable synergistic effect within the same molecular family via structure-complementary self-assembly. We rationalize this possibility from the coupled perspectives of cation exchange and supramolecular self-assembly, and marshal as circumstantial support the solubility/phase-behavior screening of compounds C1~C9 together with a preliminary investigation into the interference of varying K⁺ concentrations on feed solutions containing 4 ppm Rb and 3 ppm Cs. This is a perspective article; the synergistic performances discussed are hypotheses grounded in the literature and physicochemical data, and await experimental validation.
文章引用：张甜甜, 林荣文, 余东海, 向绍基, 郑文, 宗国强, 王成龙. 取代苄基苯酚“单/双取代混合”协萃的可能性与机理思考[J]. 材料科学, 2026, 16(10): 99-106. https://doi.org/10.12677/ms.2026.1610194

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