Pt原子场所改造的氧调解剂可从甘油中提升酸的电合成
Qie Fang1, Lijin Wang1, Lin Xu1
1State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China.
Angewandte Chemie (International ed. in English)
|August 26, 2025
概括
在催化剂上设计的原子站点能够在低电位下从糖醇中有效的电合成酸. 这种突破避免了高能耗的途径,为可持续化学生产提供了有前途的途径.
科学领域:
- 电化学
- 催化剂
- 材料科学
背景情况:
- 酸从糖醇的电合成通常使用具有双介质 (Ni3+-O和Ni2+δ-) 的Ni基催化剂.
- 对于Ni3+-O所需的高潜力限制了该过程的整体效率和能源消耗.
研究的目的:
- 开发一种新型的催化系统,以显著降低酸的电合成效率.
- 克服现有的基于Ni的催化剂中双介质机制所带来的局限性.
主要方法:
- 在Ni气凝上工程 (Pt) 原子位点以创建修饰的Ni2+δ-OH) 氧化还原介质.
- 研究Pt工程Ni催化剂的催化性能,用于糖醇电氧化.
- 分析反应机制,专注于C-C键裂变和原子转移.
主要成果:
- 经过Pt工程的Ni催化剂 (Ni93Pt7) 实现了1.25V的低启动电位,优于未经修改的Ni气凝 (1.36V).
- 已证明高效率 (250°C) 完全转化糖,稳定性优异 (>180小时).
- 绕过高潜力Ni3+-O路径,有利于Ni2+δ-(OH)ads介质.
结论:
- 在Ni催化剂上的Pt原子站点工程提供了一个有效的策略来绕过双介质系统的局限性.
- 这种方法使酸从糖醇中高效和低潜电合成.
- 该方法在邻近多聚醇的低碳化合物合成中具有广泛的适用性.
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