MK-40 Membranes Surface-Modified with Ceria: Preparation and Properties

被引：0
|
作者：
Yurova, P. A. [1 ]
Manin, A. D. [1 ]
Stenina, I. A. [1 ]
Yaroslavtsev, A. B. [1 ]
机构：
[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia
来源：
MEMBRANES AND MEMBRANE TECHNOLOGIES | 2024年 / 6卷 / 05期
关键词：
heterogeneous cation-exchange membranes; MK-40; ceria; selectivity; fouling; WASTE-WATER; EXCHANGE MEMBRANES; ELECTRODIALYSIS; DESALINATION; OXIDE; SELECTIVITY; REJECTION; IONS;
D O I：
10.1134/S251775162460078X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Composite materials based on cation-exchange membranes MK-40 and ceria, including phosphate-functionalized, have been obtained and characterized by SEM, TGA, and IR spectroscopy. The conductivity of the membranes in the sodium form decreases from 6.2 to 3.5 mS/cm and in the calcium form, increases slightly from 1.3 to 1.6 mS/cm. It has been shown that selectivity to divalent ions grows. For example, during electrodialysis desalination selective permeability coefficients P(Ca-2 (+)/Na+) and P(Mg2+/Li+) increase to 3.6 and 6.6, respectively. Furthermore, additional phosphate functionalization of ceria improves the fouling resistance of the materials.
引用
收藏
页码：318 / 324
页数：7
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