高校化学工程学报2024，Vol.38Issue(2)：265-273,9.DOI:10.3969/j.issn.1003-9015.2024.02.011
系统中水含量对锂介导合成氨的性能影响
Effects of water contamination on lithium-mediated ammonia synthesis
摘要
Abstract
In order to study the problem of water contamination in the process of lithium-mediated ammonia synthesis(LM-NRR),effects of water contents on the performance of LM-NRR system and its reaction mechanism at the interface were discussed through comparative experiments and characterization methods including scanning electron microscopy(SEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The results show that the LM-NRR system have good performance of ammonia synthesis without water,which achieves high ammonia yield(0.0124 μg·s-1·cm-2)and Faradaic efficiency(7.05%)under the condition of 120 min,4 mL·min-1 and 3 mA·cm-2.Meanwhile,water contents have a great impact on ammonia synthesis performance that leading to low faradaic efficiency and synthetic rate,as water can affect the LM-NRR system by intensifying hydrogen evolution reaction(HER)competition,promoting the hydrolysis of LiBF4,and reducing the surface lithium sites.关键词
锂介导/氮还原反应/合成氨/水/界面反应Key words
Li-mediated/nitrogen reduction reaction/ammonia synthesis/water/interface reaction分类
化学化工引用本文复制引用
陈禹志,刘永忠,康丽霞,黄贤坤..系统中水含量对锂介导合成氨的性能影响[J].高校化学工程学报,2024,38(2):265-273,9.基金项目
中央高校基本科研业务费项目(xzd012021035 （）
xhj032021009-05) （）
国家自然科学基金(21878240). （21878240）
