节能和面向产品的过氧化电合成是通过电化学配对和产品工程实现的
1State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
Nature communications
|October 7, 2023
概括
这项研究提出了一种新的过氧化 (H2O2) 电合成方法,通过将氧气减少与废塑料回收利用相结合. 这种高效的方法实现了高产量,并为化学生产提供了具有成本效益的替代方案.
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) 通过氧降解反应 (ORR) 的电合成由于氧演化反应 (OER) 缓慢和H2O2不稳定性而面临挑战.
- 废弃聚乙烯二甲酸盐 (PET) 的上循环是目前正在进行的研究领域,具有可持续化学生产的潜力.
研究的目的:
- 开发一种高效的电合成协议,用于生产H2O2,并加上废弃PET的再循环.
- 为下游应用引入一种新的H2O2转化策略.
- 评估拟议的电合成系统的技术经济可行性.
主要方法:
- 设计的Ni-Mn双金属和洋碳基催化剂用于ORR到H2O2和乙烯基甘醇电氧化.
- 实施了一种合电解系统,用于同时进行H2O2电合成和PET上循环.
- 研究了H2O2的下游转化为甲和二过氧化物.
主要成果:
- 在乙烯糖醇电氧化过程中获得了97.5%的H2O2法拉达效率和93.0%的形式效率.
- 电解系统在0.927V的低电位下运行,达到工业电流密度为400mA cm-2.2.
- 与HER的PET上循环和ORR的OER相比,ORR的PET上循环协议表现出优异的技术经济性能.
结论:
- 开发的电合成协议为H2O2生产和化学合成提供了一种节能和高效的方法.
- 将H2O2电合成与废PET回收利用相结合,是一种可持续且经济可行的方法.
- 这项工作为H2O2和增值化学品的工业规模电合成提供了有前途的方法.
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