A Study on Complexation and Transport of Cr(III) Through a Chromogenic Aza Crown Liquid Membrane

被引：3

作者：

Mehta, H. S. ^{[1
]}

Kaur, H. ^{[1
]}

Menon, S. K. ^{[1
]}

机构：

[1] Gujarat Univ, Sch Sci, Dept Chem, Ahmadabad 380009, Gujarat, India

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY | 2011年 / 48卷 / 02期

关键词：

Chromogenic azacrown ether; Cr(III) transport; liquid membrane; spectrophotometry; CHROMIUM(VI); MECHANISM;

D O I：

10.1080/10601325.2011.537530

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new chromogenic aza-crown-ether N-(8-hydroxyquinoline-7-methylene)-4-azadibenzo-18-crown-6-ether (HQMADCE) was synthesized through the condensation reaction of 4-azadibenzo-18-crown-6-ether, 8-hydroxy quinoline and formaldehyde. The synthesized chromogenic crown was characterized by various spectroscopic techniques and its complexation with Cr(III) was studied. The parameters like extraction constant (K-ex), stability constant (beta), free energy change (Delta G), enthalpy change (Delta H) and change in entropy (Delta S) were calculated. Subsequently transport of Cr(III) through a bulk liquid membrane containing HQMADCE as carrier was studied. The permeation of metal was investigated as a function of various experimental variables viz. pH, carrier concentration, metal concentration and time. Furthermore, interference by other ions was also studied.

引用

页码：148 / 154

页数：7

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