聚碳酸盐的固态化学回收为环氧化物和二氧化碳使用异核 (II) 碳 (II) 催化剂
Thomas M McGuire1, Arron C Deacy1, Antoine Buchard2
1Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford, OX1 3TA, U.K.
Journal of the American Chemical Society
|September 28, 2022
概括
这项研究引入了一种新的Mg(II) Co(II) 催化剂,用于将聚碳酸盐的固态聚合物化学回收 (CRM) 转化为环氧化物. 催化剂表现出高活性,选择性和可重复使用性,推进可持续的聚合物解决方案.
科学领域:
- 聚合物化学
- 催化剂
- 可持续的材料
背景情况:
- 聚合物化学回收 (CRM) 对可持续性至关重要.
- 对于高速率和选择性,需要有效的脱聚合催化.
- 目前的CRM策略通常依赖于高稀释,限制了可扩展性.
研究的目的:
- 开发一种高活性和选择性的聚合物化学回收催化剂.
- 为了研究固态聚碳酸的脱聚合.
- 在环境条件下评估催化剂的可重复使用性和性能.
主要方法:
- 在CRM中使用异质核[Mg{II}Co{II}]催化剂.
- 聚乙烯碳酸盐 (PCHC) 的固态脱聚合.
- 对反应速率,选择性和催化剂可重复使用性的分析.
主要成果:
- 获得高活性 (TOF=25700h−1) 和PCHC脱聚变的选择性 (> 99%).
- 在固态条件下证明有效的环氧化物和二氧化碳形成.
- 催化剂在四个周期内表现出极好的可重复使用性, 没有性能损失.
- 成功的2g级脱聚合,产生高达95%的环氧化物.
结论:
- [Mg(II) Co(II) 催化剂可以有效地选择固态聚合物化学回收.
- 这种方法为从聚碳酸盐中生产环氧化物提供了可持续的途径.
- 催化剂的强度和可重复使用性支持其在工业环境中的实际应用.
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