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首页> 外文期刊>Chemistry: A European journal >Compleation Mechanism of Olefin with Silver Ions Dissolved in a Polymer Matrix and its Effect on Facilitated Olefin Transport
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Compleation Mechanism of Olefin with Silver Ions Dissolved in a Polymer Matrix and its Effect on Facilitated Olefin Transport

机译：烯烃与聚合物基质中溶解的银离子的互补机理及其对促进烯烃迁移的影响

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摘要

Remarkable separation performance of olfin/paraffin mixtures was previously reported by facilitated olefin transport through silver-based polymer electrolyte memberanes. The mechanism of facilitated olefin transport in solid membrane sof AgCF_3SO_3 dissolved in poly(N-vinyl pyrrolidone)(PVP) is investigated . In silver polymer electrolyte membranes. only free anions are present up to the p 2:1 mole ratio of [C=C]:[Ag] and ion pairs start to form at a ratio of 1:1 , followed by higher-order inoic aggregates above a ratio of 1:2 . At silver concentrations above 3:1 the propylene permeance increases almost linearly with the total silver concentration, unexpectedly , regardless of the silver ionic constituents. It was also fond that all the silver constituts , including ion pairs and higher order ionic aggregateds, were completely redissolved into free anions under the propylene environment. Thois suggests that propylene can be a good ligand for the silver cation. From these experimental findings, a new mechanism for the complexation reaction betwen propylenes and silver salts in silver-polymer electrolytes was proposed. The new mechanism is consistent with the linearity between the propylene permeance and the total silver concentration regardless of the kind of the silver constituents . Therefore, the facilitated propylene transport through siliver-polymer elctrolytes may be associated mainly with the silver cation weakly coordinated with both carbonyl oxygen atoms and propylene
机译：以前通过促进烯烃通过银基聚合物电解质member烷的转移，报道了烯烃/石蜡混合物的显着分离性能。研究了将AgCF_3SO_3溶解在聚（N-乙烯基吡咯烷酮）（PVP）中的固体膜中促进烯烃迁移的机理。在银聚合物电解质膜中。在[C = C]：[Ag]的p 2：1摩尔比之前，仅存在游离阴离子，并且离子对以1：1的比例开始形成，随后是高于1的比例的高级离子聚集体：2。在银浓度高于3：1时，无论银离子成分如何，丙烯的渗透率几乎都随总银浓度线性增加，出乎意料。还喜欢在丙烯环境下将所有银成分（包括离子对和更高阶的离子聚集体）完全重新溶解为游离阴离子。 Thois认为，丙烯可以是银阳离子的良好配体。从这些实验结果中，提出了在银聚合物电解质中的丙烯和银盐之间的络合反应的新机理。新的机制与丙烯渗透率和总银浓度之间的线性是一致的，而与银成分的类型无关。因此，通过银聚合物聚合物电解质促进的丙烯运输可能主要与弱于羰基氧原子和丙烯配位的银阳离子有关。

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