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环境一电催化合成卡普罗拉克坦从循环赫萨和酸盐通过 Ag-Ag₄Sn-SnO₂纳米粒子

Cheng Xue^1,2, Shuaiqiang Jia^1,2, Xiao Chen^1,2

¹Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China.

Angewandte Chemie (International ed. in English)

|March 11, 2026

概括

这项研究提出了一种新型的电化学方法,用于从循环松和酸盐废物中合成卡普罗拉克坦 (CPL). 该工艺实现了高产量和选择性,为传统的尼龙-6生产提供了更绿色的替代方案.

科学领域:

绿色化学绿色化学
电触媒溶解是一种电触媒.
材料科学材料科学材料科学

背景情况:

传统的caprolactam (CPL) 从循环松 (CYC) 合成是对环境的负担,产生硫酸废物.
从CYC和酸盐 (NO₃^-) 的现有电化学路径主要产生环素氧化物 (CHO),而不是直接的CPL.

研究的目的:

在环境条件下从循环素 (CYC) 和酸盐 (NO) 制成高价值卡普罗拉克坦 (CPL) 的直接,单电化学合成.
为了实现CPL电合成的高产量和选择性,克服当前方法的局限性.

主要方法:

使用的Ag-Ag₄Sn-SnO₂纳米粒子催化剂用于电化学转化.
使用现场表征,控制实验和理论计算来理解反应机制.
扩大了反应堆规模,以评估生产速度和产量.

主要成果:

使用新型催化剂实现了96%的产量和97%的CPL电合成选择性.
在催化剂上证明NO₃^-和CYC基质的平衡激活对于高效率至关重要.
报告了高的CPL生产率3.41g h-1g cat-1与90.5%的孤立产量在规模化.
通过合成其他氨基酸化合物,包括降醇,展示了多功能性.

结论:

开发的Ag-Ag₄Sn-SnO₂催化电化学方法提供了一个可持续和高效的单途径,用于从CYC和NO₃^-直接合成CPL.
这种技术具有巨大的潜力,可用于价值化学品的大规模,环保的电合成.

关键词:

在C -N合器.卡普罗拉克塔姆 (caprolactam) 是一种电催化剂是一种电催化剂.减少酸盐的减少扩大规模的生产生产.

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