Hydroformylation of Olefins by a Rhodium Single‐Atom Catalyst with Activity Comparable to RhCl(PPh3)3 |
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| Authors: | Dr Rui Lang Tianbo Li Dr Daiju Matsumura Prof Shu Miao Yujing Ren Dr Yi‐Tao Cui Yuan Tan Dr Botao Qiao Dr Lin Li Prof Aiqin Wang Prof Xiaodong Wang Prof Tao Zhang |
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| Institution: | 1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China;2. University of Chinese Academy of Sciences, Beijing, China;3. Japan Atomic Energy Agency, SPring-8, Hyogo, Japan;4. Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, Japan |
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| Abstract: | Homogeneous catalysts generally possess superior catalytic performance compared to heterogeneous catalysts. However, the issue of catalyst separation and recycling severely limits their use in practical applications. Single‐atom catalysts have the advantages of both homogeneous catalysts, such as “isolated sites”, and heterogeneous catalysts, such as stability and reusability, and thus would be a promising alternative to traditional homogeneous catalysts. In the hydroformylation of olefins, single‐atom Rh catalysts supported on ZnO nanowires demonstrate similar efficiency (TON≈40000) compared to that of homogeneous Wilkinson's catalyst (TON≈19000). HAADF‐STEM and infrared CO chemisorption experiments identified isolated Rh atoms on the support. XPS and XANES spectra indicate that the electronic state of Rh is almost metallic. The catalysts are about one or two orders of magnitude more active than most reported heterogeneous catalysts and can be reused four times without an obvious decline in activity. |
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| Keywords: | heterogeneous catalysis hydroformylation rhodium single-atom catalysts styrene |
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