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DOI	10.1038/s41893-023-01084-x
	Economically viable electrocatalytic ethylene production with high yield and selectivity
	Zhao, Bo-Hang; Chen, Fanpeng; Wang, Mengke; Cheng, Chuanqi; Wu, Yongmeng; Liu, Cuibo; Yu, Yifu; Zhang, Bin
发表日期	2022
ISSN	2398-9629
页码	18
英文摘要	Ethylene is a widely used petrochemical feedstock for the manufacture of various critical chemicals. Here the authors show a rationally designed Cu catalyst that enables electrocatalytic production with high performance and economic feasibility as well as sustainability. Electrocatalytic semihydrogenation of acetylene provides a clean pathway to the production of ethylene (C2H4), one of the most widely used petrochemical feedstocks. However, its performance is still well below that of the thermocatalytic route, leaving the practical feasibility of this electrochemical process questionable. Here our techno-economic analysis shows that this process becomes profitable if the Faraday efficiency exceeds 85% at a current density of 0.2 A cm(-2). As a result, we design a Cu nanoparticle catalyst with coordinatively unsaturated sites to steer the reaction towards these targets. Our electrocatalyst synthesized on gas diffusion layer coated carbon paper enables a high C2H4 yield rate of 70.15 mmol mg(-1) h(-1) and a Faraday efficiency of 97.7% at an industrially relevant current density of 0.5 A cm(-2). Combined characterizations and calculations reveal that this performance can be attributed to the favourable combination of a higher calculated by equationsenergy barrier for the coupling of active hydrogen atoms (H) and weak absorption of C2H4. The former suppresses the competitive hydrogen evolution reaction, whereas the latter avoids overhydrogenation and C-C coupling. Further life cycle assessment evidences the economic feasibility and sustainability of the process. Our work suggests a way towards rational design and manipulation of nanocatalysts that could find wider and greener catalytic applications.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000946419100001
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272748
作者单位	Tianjin University; Tianjin University; Tianjin University
推荐引用方式 GB/T 7714	Zhao, Bo-Hang,Chen, Fanpeng,Wang, Mengke,et al. Economically viable electrocatalytic ethylene production with high yield and selectivity[J],2022:18.
APA	Zhao, Bo-Hang.,Chen, Fanpeng.,Wang, Mengke.,Cheng, Chuanqi.,Wu, Yongmeng.,...&Zhang, Bin.(2022).Economically viable electrocatalytic ethylene production with high yield and selectivity.NATURE SUSTAINABILITY,18.
MLA	Zhao, Bo-Hang,et al."Economically viable electrocatalytic ethylene production with high yield and selectivity".NATURE SUSTAINABILITY (2022):18.