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

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI:10.1134/S251775162460078X

P. A. Yurova, A. D. Manin, I. A. Stenina, A. B. Yaroslavtsev

引用次数: 0

Abstract

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 Р(Ca²⁺/Na⁺) and Р(Mg²⁺/Li⁺) increase to 3.6 and 6.6, respectively. Furthermore, additional phosphate functionalization of ceria improves the fouling resistance of the materials.

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氧化铈表面改性MK-40膜的制备及性能研究

制备了基于阳离子交换膜MK-40和铈（含磷酸盐功能化）的复合材料，并用扫描电镜、热重分析和红外光谱对其进行了表征。钠离子形式的膜电导率从6.2 mS/cm降低到3.5 mS/cm，钙离子形式的膜电导率从1.3 mS/cm略微增加到1.6 mS/cm。研究表明，对二价离子的选择性增强。例如，在电渗析脱盐过程中，选择性渗透系数Р（Ca2+/Na+）和Р（Mg2+/Li+）分别增加到3.6和6.6。此外，氧化铈的额外磷酸盐功能化提高了材料的抗结垢性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Membranes and Membrane Technologies Multiple-

CiteScore

3.10

自引率

31.20%

发文量

期刊介绍： The journal Membranes and Membrane Technologies publishes original research articles and reviews devoted to scientific research and technological advancements in the field of membranes and membrane technologies, including the following main topics:novel membrane materials and creation of highly efficient polymeric and inorganic membranes;hybrid membranes, nanocomposites, and nanostructured membranes;aqueous and nonaqueous filtration processes (micro-, ultra-, and nanofiltration; reverse osmosis);gas separation;electromembrane processes and fuel cells;membrane pervaporation and membrane distillation;membrane catalysis and membrane reactors;water desalination and wastewater treatment;hybrid membrane processes;membrane sensors;membrane extraction and membrane emulsification;mathematical simulation of porous structures and membrane separation processes;membrane characterization;membrane technologies in industry (energy, mineral extraction, pharmaceutics and medicine, chemistry and petroleum chemistry, food industry, and others);membranes and protection of environment (“green chemistry”).The journal has been published in Russian already for several years, English translations of the content used to be integrated in the journal Petroleum Chemistry. This journal is a split off with additional topics.