| Autor: |
Feng Li, Jian Fang, Zhengping Dong, Wei David Wang, Xun Sun, Qiang Song, Jinfang Kou, Boyang Li, Dan Xu, Hanghang Zhu |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of Catalysis. 406:19-27 |
| ISSN: |
0021-9517 |
| DOI: |
10.1016/j.jcat.2021.09.027 |
| Popis: |
Combining the advantages of homogeneous catalysis and the recyclability of heterogeneous catalysts is highly desired for sustainable catalysis but remains a challenging goal. In the current work, hydrogen-bonded organic frameworks (HOFs) that consist of cage molecules with amino groups were prepared. The HOFs with heteroatom-containing porous cavities and stable backbone confine ultrafine Ru clusters with diameter of about 0.47 nm and high Ru loading of 30 wt%. The obtained Ru@HOF catalyst can well disperse in water in the form of discrete cage-confined Ru clusters similar to a homogeneous catalyst, and can be recycled easily through simple precipitation by the addition of acetone due to the formation of hydrogen bonds between discrete cages. The Ru@HOF was used as a homogenous catalyst for efficiently selective catalytic hydrogenation of N-heteroarene compounds, such as quinolines and indoles in aqueous solution. Especially quinoline compounds can be fully hydrogenated to decahydroquinoline with Ru@HOF catalyst, which is not easy to be implemented with other Ru nanoparticle-based catalysts. The high catalytic performance of Ru@HOF is attributed to the homogeneously dispersed and accessible active sites of the ultrafine Ru clusters. This study provides a novel strategy for fabricating ultrafine noble metal clusters-based catalysts with homogeneous catalytic performance and heterogeneous recyclability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect