有效的催化剂用于环氧化物和CO2的共聚合;使用水合成聚碳酸聚醇
Michael R Kember1, Charlotte K Williams
1Department of Chemistry, Imperial College London, London, SW7 2AZ, UK.
Journal of the American Chemical Society
|September 14, 2012
概括
高活性的二催化剂在温和条件下能够有效地共聚氧化环素氧化物和二氧化碳. 这些催化剂表现出优越的性能和低负载,产生高纯度的聚 ((环二烯碳酸盐) 聚.
科学领域:
- 催化剂是一种催化剂.
- 聚合物化学 聚合物化学
- 有机金属化学 有机金属化学
背景情况:
- 环氧化物和CO2的高效共聚合对于可持续的聚合物生产至关重要.
- 现有的催化剂通常需要高的二氧化碳压力和负载.
- 高活性和选择性催化剂的开发仍然是一个关键的挑战.
研究的目的:
- 合成和描述用于氧化环和二氧化碳共聚的新型二催化剂.
- 在温和条件下评估催化活性,选择性和效率.
- 探索使用可再生试剂合成多聚合物 (cyclohexene碳酸) 聚合物.
主要方法:
- 三种二复合物的合成.
- 使用光谱技术对催化剂进行表征.
- 在1ATMCO2压力下的共聚合反应.
- 聚合物组成和性能的分析.
主要成果:
- 开发了三种高度活性的二催化剂,用于氧化环和二氧化碳的共聚合.
- 实现的营业额数量高达6000个,营业频率高达750小时 ((-1).
- 与以前最好的催化剂相比,催化剂的工作负载明显较低 (1/500).
- 生产的聚合物具有99%的碳酸盐重复单元和99%以上的共聚合物选择性.
- 用水作为可再生链传递剂,合成具有高选择性的聚 ((环二烯碳酸盐) 聚.
结论:
- 新型二催化剂在聚合物合成中为二氧化碳利用提供了前所未有的活性和效率.
- 这些催化剂代表了可持续聚合物化学领域的重大进展.
- 从可再生资源生产多的能力突出显示了绿色化工过程的潜力.
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