In Situ Construction of a Co/ZnO@C Heterojunction Catalyst for Efficient Hydrogenation of Biomass Derivative under Mild Conditions
| Autor: | Ya-Ru Shao, Lei Zhou, Lei Yu, Zhuo-Fei Li, Yan-Ting Li, Wei Li, Tong-Liang Hu |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ACS Applied Materials & Interfaces. 14:17195-17207 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.1c25097 |
| Popis: | The efficient hydrogenation of biomass-derived levulinic acid (LA) to value-added γ-valerolactone (GVL) based on nonprecious metal catalysts under mild conditions is crucial challenge because of the intrinsic inactivity and instability of these catalysts. Herein, a series of highly active and stable carbon-encapsulated Co/ZnO@C-X (where X = 0.1, 0.3, 0.5, the molar ratios of Zn/(Co+Zn)) heterojunction catalysts were obtained by in situ pyrolysis of bimetal CoZn MOF-74. The optimal Co/ZnO@C-0.3 catalyst could achieve 100% conversion of LA and 98.35% selectivity to GVL under mild conditions (100 °C, 5 bar, 3 h), which outperformed most of the state-of-the-art catalysts reported so far. Detailed characterizations, experimental investigations, and theoretical calculations revealed that the interfacial interaction between Co and ZnO nanoparticles (NPs) could promote the dispersibility and air stability of the active Co |
| Databáze: | OpenAIRE |
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