在异金属-有机框架中控制布伦斯特德酸度
Ana Rubio-Gaspar1, Sergio Navalón2, Sergio Tatay1
1Functional Inorganic Materials Team, Instituto de Ciencia Molecular (ICMol), Universitat de València, Paterna, 46980 València, Spain.
Journal of the American Chemical Society
|January 23, 2023
概括
在半孔框架中对金属集群的合成控制提供了直接访问独特的催化活动. MUV-101中的TiFe2节点显示出高氧化氨解的效率,使得propranolol合成.
科学领域:
- 材料科学
- 催化剂
- 有机化学
背景情况:
- 框架修改是调整催化剂特性的一种常见策略.
- 对金属集群组成的直接合成控制提供了一种访问特定催化功能的替代方法.
研究的目的:
- 研究具有不同金属-氧基组合的同结构半孔框架的催化活性.
- 使用这些新型催化框架探索β-氨基醇的直接合成.
主要方法:
- 通过同金属 (Fe3,Ti3) 和异金属 (TiFe2,TiCo2,TiNi2) 金属-氧基剪切器合成了一系列同结构的半孔框架.
- 在环氧化物的氨解中测试了这些框架的催化性能.
- 评估了活性TiFe2框架的酸位属性 (路易斯和布伦斯特德).
主要成果:
- 含有TiFe2的框架 (MUV-101(Fe)) 的催化活性与环氧氨解的基准酸催化剂相当.
- 观察到的活性归因于易斯Ti4+和布伦斯特德Fe3+-OH酸位的协同作用.
- 证明了MUV-101的有用性,用于合成各种β-氨基醇,包括高产量和选择性的醇的克制量生产.
结论:
- 对半孔材料的金属集成成分进行直接合成控制是开发向催化剂的可行策略.
- MUV-101中的TiFe2-oxo三元节点具有独特的易斯和布伦斯特德酸特性,使其成为环氧氨解的有效催化剂.
- 这种催化系统有望有效和选择性地合成像醇这样的必需药物化合物.
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