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关于H₂O₂产生效率的影响因素的研究在无隔膜浴中,在阴极和阳极上产生效率

Tian Tian¹, Zhaohui Wang¹, Kun Li¹

¹College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.

Materials (Basel, Switzerland)

|April 27, 2024

概括

过氧化 (H2O2) 的电合成在没有隔膜的浴中更有效. 生成的H2O2可以在阳极上分解,在没有隔膜的系统中限制度.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

过氧化 (H2O2) 的电合成为传统方法提供了一个可持续的替代方案.
无隔膜电解浴可以简化设备结构,减少H2O2生产的能源消耗.

研究的目的:

为了调查影响H2O2生成效率的因素在合电解系统.
为了比较氧化 (FTO) 阳极在不同电解质中的两电子水氧化反应 (2e-WOR) 的性能.
为了评估隔膜存在对H2O2积累和稳定性的影响.

主要方法:

使用阳极2e-WOR和阴极2e-氧降解反应 (2e-ORR) 进行H2O2的电合成.
使用FTO电极作为阳极和聚乙烯氧化物改性碳纳米管 (PEO-CNTs) 作为阴极催化剂.
系统地研究了H2O2.2.的反应动力学,自我分解和氧化分解率.

主要成果:

没有隔膜的浴室证明了对H2O2.2的改善的生成率和法拉第效率 (FE).
FTO阳极的催化性能在Na2CO3/NaHCO3和NaOH电解质之间有所不同.
由于在无隔膜系统中的扩散,H2O2在阳极上的氧化分解被确定为限制H2O2度的关键因素.

结论:

在无隔膜浴中的合电合成是有效生产H2O2的有希望的方法.
了解和减轻H2O2分解路径,特别是阳极上的分解路径,对于优化无隔膜系统中的度至关重要.

关键词:

2e-ORR路径的路径在2e-WOR路径上.碳酸碳酸盐-二碳酸盐溶液.合电解系统的电解系统.过氧化是一种过氧化.

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