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Iron Coordination to Hollow Microporous Metal-Free Disalphen Networks: Heterogeneous Iron Catalysts for CO2 Fixation to Cyclic Carbonates |
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| Authors: | Kyoungil Cho Dr Sang Moon Lee Dr Hae Jin Kim Dr Yoon-Joo Ko Prof Eun Joo Kang Prof Dr Seung Uk Son |
| Institution: | 1. Department of chemistry, Sungkyunkwan University, Suwon, 16419 Korea;2. Korea Basic Science Institute, Daejeon, 34133 Korea;3. Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Seoul, 08826 Korea;4. Department of Applied Chemistry, Kyung Hee University, Yongin, 17104 Korea |
| Abstract: | This work shows that a hollow and microporous metal-free N,N′-phenylenebis(salicylideneimine) (salphen) network (H-MSN) can be engineered by Sonogashira coupling of tetraiodo{di(Zn-salphen)}] building blocks with 1,4-diethynylbenzene in the presence of silica templates and by successive Zn and silica etching. Iron(III) ions could be incorporated into the H-MSN to form hollow and microporous Fe–disalphen networks (H-MFeSN) with enhanced microporosity and surface area. The H-MFeSN showed efficient catalytic performance and recyclability in the CO2 conversion to cyclic carbonates. |
| Keywords: | carbon dioxide catalysts cyclic carbonates iron microporous organic networks |