来自生物质的商品化学品的可扩展电合成,通过抑制非法拉第转换来实现
Hua Zhou1,2,3, Yue Ren1, Bingxin Yao1
1State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
Nature communications
|September 12, 2023
概括
这项研究开发了一种连续流动反应器,以抑制生物质电氧化过程中的降解. 这使得有效的,可扩展的生产有价值的化学物质,如酸盐和FDCA从生物质来源.
科学领域:
- 电化学 电化学 电化学
- 可持续化学 可持续化学
- 生物质转换生物质转换
背景情况:
- 生物质电氧化为获得有价值的氧化物提供了一条可持续的途径.
- 在性电解质中,由于基质/中间体不稳定性而导致的碳损失阻碍了实际应用,特别是在高度下.
- 非法拉第式降解是生物质电氧化的一个关键挑战.
研究的目的:
- 开发一种抑制生物质电氧化过程中非法拉第式降解的系统.
- 实现生物质平台的高效和选择性转化为有价值的氧化物.
- 为了证明从生物质中获得关键化学物质的可扩展电合成.
主要方法:
- 开发一个单通连续流反应堆 (SPCFR) 系统.
- 优化了SPCFR设计,具有高的电极面积/电解质体积比,短的基板停留时间,以及分离的基板和性溶液养.
- 构建一个九个堆叠模块的SPCFR系统,以提高性能.
主要成果:
- 抑制非法拉第式降解.
- 高单通转换效率 (SPCE) 的葡萄糖形成 (81.8%) 和5-基甲基 (HMF) 到2,5-基酸 (FDCA) (95.8%).
- 在高度 (分别为562.8毫米和556.9毫米) 时,对酸盐 (76.5%) 和FDCA (96.9%) 的高选择性.
- 二形酸盐 (0.7公斤) 和FDCA (1.17公斤) 的千克级电合成.
结论:
- 了解和抑制非法拉第式降解对于高效的生物质电氧化至关重要.
- 开发的SPCFR系统使生物质可扩展和高效地生产有价值的氧化物.
- 这项工作为推进生物质升级中的电化学技术提供了途径.
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