电合成
环氧乙烷
环氧丙烷
乙烯
氯
电化学
氯化物
氧化物
化学
无机化学
氧气
催化作用
有机化学
电极
聚合物
物理化学
共聚物
作者
Wan Ru Leow,Yanwei Lum,Adnan Ozden,Yuhang Wang,Dae‐Hyun Nam,Bin Chen,Joshua Wicks,Tao‐Tao Zhuang,Fengwang Li,David Sinton,Edward H. Sargent
出处
期刊:Science
[American Association for the Advancement of Science]
日期:2020-06-11
卷期号:368 (6496): 1228-1233
被引量:475
标识
DOI:10.1126/science.aaz8459
摘要
Chemicals manufacturing consumes large amounts of energy and is responsible for a substantial portion of global carbon emissions. Electrochemical systems that produce the desired compounds by using renewable electricity offer a route to lower carbon emissions in the chemicals sector. Ethylene oxide is among the world's most abundantly produced commodity chemicals because of its importance in the plastics industry, notably for manufacturing polyesters and polyethylene terephthalates. We applied an extended heterogeneous:homogeneous interface, using chloride as a redox mediator at the anode, to facilitate the selective partial oxidation of ethylene to ethylene oxide. We achieved current densities of 1 ampere per square centimeter, Faradaic efficiencies of ~70%, and product specificities of ~97%. When run at 300 milliamperes per square centimeter for 100 hours, the system maintained a 71(±1)% Faradaic efficiency throughout.
科研通智能强力驱动
Strongly Powered by AbleSci AI