https://scholars.lib.ntu.edu.tw/handle/123456789/636512
標題: | Two novel types of heterogeneous catalysts apply to synthesize cyclic carbonates through CO2 fixation on epoxides under mild condition | 作者: | Chuang, Jia Yu Liu, Kuan Ting Lin, Monica Mengdie Wen-Yueh Yu RU-JONG JENG Leung, Man-kit |
關鍵字: | Carbon dioxide fixation | Cyclic carbonates | Heterogeneous catalysts | Silica gel | 公開日期: | 1-十月-2023 | 卷: | 76 | 來源出版物: | Journal of CO2 Utilization | 摘要: | The present work focuses on developing heterogeneous catalysts for conversion of CO2 and mono-/di-epoxides to mono-/bis-cyclic carbonates. To achieve this purpose, two types of recyclable solid catalysts, namely polyurethane (PU-BTP) and polyurethane modified on silica gel-solid support (SG-AU-BPT), are synthesized. On these catalysts, the key promoter CaI2 is pre-absorbed. Both catalysts show high catalytic activity under mild conditions. For example, phenyl glycidyl ether (PGE) can be converted to 4-(phenoxymethyl)− 1,3-dioxolan-2-one at 60 °C within 6 h under 1 atm pressure of CO2. PU-BTP and SG-AU-BPT can be recollected by suction filtration and reused for eight times with conversion larger than 81% and 95% respectively. These results indicate that the degree of CaI2 leaching out from the catalysts in each cycle and loss is low. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/636512 | ISSN: | 22129820 | DOI: | 10.1016/j.jcou.2023.102592 |
顯示於: | 化學工程學系 |
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