MECHANISM OF THE FACILITATED ION TRANSFER ACROSS A LIQUID-LIQUID INTERFACE

被引：10

作者：

SABELA, A ^{[1
]}

MARECEK, V ^{[1
]}

KORYTA, J ^{[1
]}

SAMEC, Z ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL,CS-14200 PRAGUE 4,CZECH REPUBLIC

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1994年 / 59卷 / 06期

关键词：

D O I：

10.1135/cccc19941287

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The facilitated transfer of sodium ion across the water/nitrobenzene interface was examined by faradaic impedance measurements at the thermodynamic equilibrium potential. Kinetic data for the interfacial reaction Na+(w) + L(n) reversible NaL+(n) (L = dibenzo-18crown-6, w = water, n = nitrobenzene) were confronted with the theoretical predictions for three possible reaction mechanisms, and a conclusion was reached that the reaction occurs via a single electrochemical step. Its pseudo-first order rate constant depends on the interfacial potential difference and falls between 0.01 and 1 cm s-1, i.e. it is comparable with the first order rate constant for a simple ion transfer.

引用

页码：1287 / 1295

页数：9

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