Effect of Surface Modification with Cerium Oxide on the Transport Properties of Heterogeneous Anion Exchange Membranes MA-41

IF 2 Q4 CHEMISTRY, PHYSICAL Membranes and Membrane Technologies Pub Date : 2024-05-09 DOI:10.1134/s2517751624020094

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

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Abstract

Surface modification of heterogeneous MA-41 anion-exchange membranes with cerium oxide particles, including those with a surface functionalized with phosphoric acid groups, was carried out. The resulting composite membranes were characterized by SEM, TGA, IR spectroscopy, and voltammetry. For membranes in various ionic forms, their conductivity, the number of anion transfers, as well as the selective permeability coefficients of singly and doubly charged anions in the process of electrodialysis desalting were determined. The modifying layer of cerium oxide practically does not change the conductivity of the membranes, but increases their selectivity to singly charged anions. Thus, the value of the selective permeability coefficient \(P({\text{C}}{{{\text{l}}}^{ - }}{\text{/SO}}_{4}^{{2 - }})\) of the modified MA-41 membrane increases from 0.82 to 1.01, and \(P({\text{NO}}_{3}^{ - }{\text{/SO}}_{4}^{{2 - }})\) increases from 1.38 to 1.60.

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用氧化铈进行表面改性对异质阴离子交换膜 MA-41 传输特性的影响

摘要用氧化铈颗粒对异质 MA-41 阴离子交换膜进行了表面改性，包括那些表面被磷酸基团功能化的颗粒。通过扫描电镜、热重分析、红外光谱和伏安法对得到的复合膜进行了表征。在电渗析脱盐过程中，测定了各种离子形式膜的电导率、阴离子转移次数以及单、双电荷阴离子的选择渗透系数。氧化铈改性层实际上不会改变膜的导电性，但会增加膜对单电荷阴离子的选择性。因此，改性后的 MA-41 膜的选择透过系数 \(P({\text{C}}{{\text{l}}}^{ - }}{text{/SO}}_{4}^{{2 - }})\) 值从 0.82增加到 1.01，P({\text{NO}}_{3}^{ - }{\text{/SO}}_{4}^{{2 - }})从 1.38 增加到 1.60。

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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.