Počet záznamů: 1
Dynamic Interplay between Copper Tetramers and Iron Oxide Boosting CO2 Conversion to Methanol and Hydrocarbons under Mild Conditions
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SYSNO ASEP 0510109 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Dynamic Interplay between Copper Tetramers and Iron Oxide Boosting CO2 Conversion to Methanol and Hydrocarbons under Mild Conditions Tvůrce(i) Yang, B. (CN)
Yu, X. (CN)
Halder, A. (US)
Zhang, X. (CN)
Zhou, X. (CN)
Mannie, G. J. A. (CN)
Tyo, E. C. (US)
Pellin, M. J. (US)
Seifert, S. (US)
Su, D. (CN)
Vajda, Štefan (UFCH-W) RID, ORCIDZdroj.dok. ACS Sustainable Chemistry & Engineering. - : American Chemical Society - ISSN 2168-0485
Roč. 7, č. 17 (2019), s. 14435-14442Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova oxygen reduction reaction ; carbon-dioxide ; active-sites ; catalysts ; hydrogenation ; cu ; clusters ; water ; xps ; interface ; CO2 conversion Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000484071600015 EID SCOPUS 85070542684 DOI 10.1021/acssuschemeng.9b01561 Anotace Atomically precise subnanometer catalysts are of significant interest because of their remarkable efficiency in a variety of catalytic reactions. However, the dynamic changes of active sites under reaction conditions, in particular, the transition of cluster-oxide interface structure have not yet been well-elucidated, lacking in situ measurements. By using multiple state-of-the-art in situ characterizations, here we show a dynamic interplay between copper tetramers and iron oxides in a single-size Cu-4/Fe2O3 catalyst, yielding an enrichment of surface Cu-4-Fe2+ species under reaction conditions that boosts CO2 hydrogenation at near-atmospheric pressures. During reaction, Cu-4 clusters facilitate the reduction of Fe2O3 producing surface-rich Fe2+ species in the proximate sites. The as-formed Fe2+ species in return promotes CO2 activation and transformation over Cu4 cluster, resulting in strikingly high methanol synthesis at low temperatures and C-1/C-3 hydrocarbon production in a high-temperature regime. The discovery of highly active Cu-4-Fe2+ sites thus provides new insights for the atomic-level design of copper catalyst toward high-efficiency CO2 conversion under mild conditions. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0300660
Počet záznamů: 1