Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate
Summary: An ultrastable and efficient Cu@C/SiO2 nanocatalyst was fabricated for the hydrogenation of ethylene carbonate, in which Cu nanoparticles are encapsulated by sorbitol-derived graphitized carbon overlayers. During the calcination of Cu-sorbitol/SiO2 precursors under N2 atmosphere, sorbitol d...
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Elsevier
2022-10-01
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Series: | iScience |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004222015115 |
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author | Tongyang Song Yuanyuan Qi Chen Zhao Peng Wu Xiaohong Li |
author_facet | Tongyang Song Yuanyuan Qi Chen Zhao Peng Wu Xiaohong Li |
author_sort | Tongyang Song |
collection | DOAJ |
description | Summary: An ultrastable and efficient Cu@C/SiO2 nanocatalyst was fabricated for the hydrogenation of ethylene carbonate, in which Cu nanoparticles are encapsulated by sorbitol-derived graphitized carbon overlayers. During the calcination of Cu-sorbitol/SiO2 precursors under N2 atmosphere, sorbitol decomposed to CO and CO2. The in situ generated CO not only reduced Cu2+ to Cu0/Cu+, but also formed graphitized carbon overlayers on the Cu surface via the disproportionation of CO. The Cu@C/SiO2 catalyst exhibited superior catalytic performance (91% MeOH yield and 43.6 h−1 TOF) at a H2/EC molar ratio of 20. Of particular note, the Cu@C/SiO2 catalyst showed remarkable long-term stability during 736 h time-on-stream test without any deactivation. The graphitized carbon overlayers on the surface of Cu nanoparticles not only functioned synergistically with the surface Cu0/Cu+ sites to promote the EC hydrogenation but also suppressed the sintering of Cu nanoparticles. Furthermore, the interaction of Cu nanoparticles and graphitized carbon overlayers stabilized the surface Cu+/(Cu0+Cu+) ratio. |
first_indexed | 2024-04-11T09:32:25Z |
format | Article |
id | doaj.art-8c763d140e504376b270d91fc1991265 |
institution | Directory Open Access Journal |
issn | 2589-0042 |
language | English |
last_indexed | 2024-04-11T09:32:25Z |
publishDate | 2022-10-01 |
publisher | Elsevier |
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series | iScience |
spelling | doaj.art-8c763d140e504376b270d91fc19912652022-12-22T04:31:49ZengElsevieriScience2589-00422022-10-012510105239Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonateTongyang Song0Yuanyuan Qi1Chen Zhao2Peng Wu3Xiaohong Li4Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd, Shanghai 200062, ChinaShanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd, Shanghai 200062, ChinaShanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd, Shanghai 200062, China; Institute of Eco-Chongming, Shanghai 202162, ChinaShanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd, Shanghai 200062, China; Institute of Eco-Chongming, Shanghai 202162, ChinaShanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd, Shanghai 200062, China; Institute of Eco-Chongming, Shanghai 202162, China; Corresponding authorSummary: An ultrastable and efficient Cu@C/SiO2 nanocatalyst was fabricated for the hydrogenation of ethylene carbonate, in which Cu nanoparticles are encapsulated by sorbitol-derived graphitized carbon overlayers. During the calcination of Cu-sorbitol/SiO2 precursors under N2 atmosphere, sorbitol decomposed to CO and CO2. The in situ generated CO not only reduced Cu2+ to Cu0/Cu+, but also formed graphitized carbon overlayers on the Cu surface via the disproportionation of CO. The Cu@C/SiO2 catalyst exhibited superior catalytic performance (91% MeOH yield and 43.6 h−1 TOF) at a H2/EC molar ratio of 20. Of particular note, the Cu@C/SiO2 catalyst showed remarkable long-term stability during 736 h time-on-stream test without any deactivation. The graphitized carbon overlayers on the surface of Cu nanoparticles not only functioned synergistically with the surface Cu0/Cu+ sites to promote the EC hydrogenation but also suppressed the sintering of Cu nanoparticles. Furthermore, the interaction of Cu nanoparticles and graphitized carbon overlayers stabilized the surface Cu+/(Cu0+Cu+) ratio.http://www.sciencedirect.com/science/article/pii/S2589004222015115Nanoparticlesnanotechnology fabricationnanomaterials |
spellingShingle | Tongyang Song Yuanyuan Qi Chen Zhao Peng Wu Xiaohong Li Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate iScience Nanoparticles nanotechnology fabrication nanomaterials |
title | Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate |
title_full | Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate |
title_fullStr | Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate |
title_full_unstemmed | Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate |
title_short | Sorbitol-derived carbon overlayers encapsulated Cu nanoparticles on SiO2: Stable and efficient for the continuous hydrogenation of ethylene carbonate |
title_sort | sorbitol derived carbon overlayers encapsulated cu nanoparticles on sio2 stable and efficient for the continuous hydrogenation of ethylene carbonate |
topic | Nanoparticles nanotechnology fabrication nanomaterials |
url | http://www.sciencedirect.com/science/article/pii/S2589004222015115 |
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