在双驱动单原子铜氧化物催化剂的突破线性缩放关系限制,用于氨基合成
Fei Shen1, Shuxian He1, Xiangyi Tang1
1Engineering Research Center for Waste Oil Recovery Technology and Equipment, Chongqing Technology and Business University, Chongqing, 400067, China.
Angewandte Chemie (International ed. in English)
|March 8, 2025
概括
一种新型的双驱动催化剂 (Cu1/WO3) 通过电催化有效地将酸盐 (NO3-) 转化为氨 (NH3),克服了以前单原子催化剂的局限性. 这一突破使得从污染水中的酸盐污染物中实现可持续的氨合成.
科学领域:
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
背景情况:
- 酸盐 (NO3RR) 的电催化降解为氨 (NH3) 提供了使用污染物可持续的合成途径.
- 单原子铜催化剂 (Cu-SACs) 由于缩放关系而面临NO3RR动力学和化物积累的限制.
研究的目的:
- 开发一种催化剂,克服Cu-SACs的局限性,以获得高效的NO3RR.
- 建立一个可持续的系统,从酸盐污染的水中合成氨.
主要方法:
- 开发一个单原子Cu载氧化催化剂 (Cu1/WO3),用于双驱动的NO3RR工艺.
- 设计一个集成的连续流系统与NO3RR细胞和膜分离器用于氨合成.
- 使用酸盐污染水测试催化剂和系统性能.
主要成果:
- 1/WO3具有较高的NH3生产率 (1274.4 mgN h-1 gCu-1),选择性 (99.2%) 和高效率 (93.7%).
- 连续流系统实现了325.9 mgN h-1 gCu-1的生产率,从长江水中获得98.3%的收集效率.
- 该系统证明了从酸盐污染物中有效合成氨,低能耗17.11千瓦时gN-1.
结论:
- 双驱动的Cu1/WO3催化剂有效地打破了增强NO3RR的缩放限制.
- 综合系统为从酸盐污染水中生产氨提供了一种可行和可持续的方法.
- 这项工作为催化剂设计和从废物资源中可持续合成氨提供了一个新的范式.
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