Rate Constants of Rate-Limiting Steps of the Water Splitting Reaction in Heterogeneous Bipolar Membranes Containing Catalyst Particles

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI:10.1134/S2517751624600870

N. V. Kovalev, I. P. Averyanov, T. V. Karpenko, N. V. Sheldeshov, V. I. Zabolotsky

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Abstract

A method has been developed for calculating the rate constants of rate-limiting steps of the water splitting reaction in the generating contacts of heterogeneous bipolar membranes (BPMs) containing particles of a catalytic additive. The method is based on the use of the equation of the current–voltage characteristic of the bipolar region of a heterogeneous BPM that contains generating contacts of two types. For the case when the catalytic additive is a cation exchanger (CE), one of the contacts is formed by CE particles and anion exchanger (AE) particles contained in BPM layers, and the other is formed by catalytic additive particles and AE particles contained in BPM layers. The order of the rate constants for the rate-limiting steps of the water splitting reaction in the studied membranes is consistent with the catalytic activity series, the constants of which are calculated based on the proton transfer reactions between water molecules and ionogenic groups contained in the BPM layers.

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含催化剂颗粒的非均相双极膜中水裂解反应限速步骤的速率常数

本文提出了一种计算含有催化添加剂颗粒的非均相双极膜（bpm）生成触点中水裂解反应限速步骤速率常数的方法。该方法基于包含两种类型生成触点的异构BPM双极区域的电流-电压特性方程的使用。当催化添加剂为阳离子交换剂（CE）时，其中一个接触是由BPM层中的CE颗粒与阴离子交换剂（AE）颗粒形成的，另一个是由BPM层中的催化添加剂颗粒与AE颗粒形成的。研究膜中水裂解反应的限速步骤的速率常数顺序与催化活性序列一致，其常数是根据BPM层中水分子与离子基之间的质子转移反应计算的。

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.