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240819s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202408681
|2 doi
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|a pubmed25n1253.xml
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|a eng
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| 100 |
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|a Wu, Zeliang
|e verfasserin
|4 aut
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| 245 |
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|a Near 100% Conversion of Acetylene to High-purity Ethylene at Ampere-Level Current
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 10.10.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|a Direct production of high-purity ethylene from acetylene using renewable energy through electrocatalytic semi-hydrogenation presents a promising alternative to traditional thermocatalytic processes. However, the low conversion of acetylene results in a significant amount of acetylene impurities in the product, necessitating additional purification steps. Herein, a tandem electrocatalytic system that integrates acetylene electrolyzer and zinc-acetylene battery units for high-purity ethylene production is designed. The ultrathin CuO nanoribbons with enriched oxygen vacancies (CuO1-x NRs) as electrocatalysts achieve a remarkable 93.2% Faradaic efficiency of ethylene at an ampere-level current density of 1.0 A cm-2 in an acetylene electrolyzer, and the power density reaches 3.8 mW cm-2 in a zinc-acetylene battery under acetylene stream. Moreover, the tandem electrocatalysis system delivers a single-pass acetylene conversion of 99.998% and ethylene selectivity of 96.1% at a high current of 1.4 A. Experimental data and calculations demonstrate that the presence of oxygen vacancies accelerates water dissociation to produce active hydrogen atoms while preventing the over-hydrogenation of ethylene. Furthermore, techno-economic analysis reveals that the tandem system can dramatically reduce the overall ethylene production cost compared to the conventional thermocatalytic processes. A novel strategy for complete acetylene-to-ethylene conversion under mild conditions, establishing a non-petroleum route for the production of ethylene is reported
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|a Journal Article
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|a ampere‐level current density
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|a electrocatalytic semi‐hydrogenation
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|a ethylene production
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|a tandem system
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|a zinc‐acetylene battery
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|a Zhang, Jinqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guan, Qihui
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Xing
|e verfasserin
|4 aut
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| 700 |
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|a Xiong, Hanting
|e verfasserin
|4 aut
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|a Chen, Shixia
|e verfasserin
|4 aut
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| 700 |
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|a Hong, Wei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Dongfang
|e verfasserin
|4 aut
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| 700 |
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|a Lei, Yaojie
|e verfasserin
|4 aut
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| 700 |
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|a Deng, Shuguang
|e verfasserin
|4 aut
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|a Wang, Jun
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Guoxiu
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 41 vom: 18. Okt., Seite e2408681
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:36
|g year:2024
|g number:41
|g day:18
|g month:10
|g pages:e2408681
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|u http://dx.doi.org/10.1002/adma.202408681
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