环氧/CO2循环添加反应由由受约束的内部希夫基联体支持的化复合体催化
Thitirat Piyawongsiri1, Nattiya Laiwattanapaisarn1, Arnut Virachotikul1
1Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong, 21210, Thailand.
ChemPlusChem
|October 10, 2023
概括
新的催化剂有效地将环氧化物和二氧化碳 (CO2) 转化为循环碳酸盐. 这种绿色化学方法在温和条件下提供高选择性和活性,减少对环境的影响.
科学领域:
- 有机金属化学 有机金属化学
- 绿色化学 绿色化学
- 催化剂是一种催化剂.
背景情况:
- 循环碳酸盐是作为试剂,溶剂和单体的有价值的化学中间体.
- 循环碳酸盐通过环氧化物与二氧化碳 (CO2) 的合合成是一种可持续的途径,可以减轻温室气体排放和环境危害.
研究的目的:
- 开发新型的化复合物,支持 inden Schiff 基联体,以有效利用 CO2.
- 研究这些复合物的催化活性和选择性,用于从环氧化物和CO2中合成循环碳酸盐.
主要方法:
- 合成和表征五个化复合物与内登希夫基联结体,包括四个X射线晶体结构.
- 在无溶剂条件下对氧化与二氧化碳的合反应的催化剂进行选.
- 反应条件的优化,包括使用四甲基化 (TBAB) 作为辅助催化剂.
主要成果:
- 结合TBAB的-丁替代剂和骨干的-丁复合物表现出高的催化活性 (TON高达1017) 和99%以上的循环碳酸盐形成的选择性.
- 优化的催化剂系统在大气二氧化碳压力和室温下有效运行.
- 催化剂证明了多功能性,成功地将各种内部和终端环氧化物转化为相应的循环碳酸盐.
结论:
- 印希夫基复合物代表了高效的催化剂,用于循环添加二氧化碳到环氧化物.
- 开发的催化系统为在温和,环保的条件下生产循环碳酸盐提供了可持续和高效的方法.
- 这项研究有助于在绿色化学中推进二氧化碳利用技术.
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