一种高度活跃且易于获得的合金催化剂,用于选择性化CO键
Sina Rösler1, Johannes Obenauf1, Rhett Kempe1
1Anorganische Chemie II-Katalysatordesign, Universität Bayreuth, 95440 Bayreuth, Germany.
这项研究引入了一种新的催化剂家族,用于高效化碳化合物. 与相比,这些土壤丰富的催化剂表现出优越的性能和独特的选择性,在催化中提供了具有成本效益的替代品.
科学领域:
- 一致性催化剂的同质性.
- 有机金属化学 有机金属化学
- 可持续的化学可持续的化学
背景情况:
- 贵金属催化剂 (Ir,Ru,Rh,Pd,Pt) 的高成本限制了它们的广泛应用.
- 在同质催化过程中需要大量且廉价的金属催化剂,如 (Co).
- 碳 (CO) 键化效率高的催化剂的有限例子.
研究的目的:
- 开发和报告一种新的,易于合成的催化剂家族.
- 调查化反应的这些新型催化剂的催化活性和选择性.
- 为了比较开发的催化剂与现有的贵金属催化剂,特别是 (Ir) 的性能.
主要方法:
- 合成二预催化剂.
- 使用金属基的催化剂激活 (2 equiv).
- 在温和的条件下,各种化物和化物 (二甲基,甲基,二甲基) 的化.
- 对反应产品和催化剂负荷进行定量分析.
主要成果:
- 成功合成了一种新的催化剂家族.
- 多种类型的化物和的定量化,用较低的催化剂负载 (低至0.25mol%) 实现.
- 优化催化剂的优越性被证明是与具有相同连接体的催化剂相比的.
- 在存在碳-碳双键 (CC) 的情况下,观察到碳基 (CO) 键化的独特选择性.
结论:
- 开发的催化剂是CO键化中贵金属催化剂的经济有效和高效替代品.
- 观察到的选择性,有利于CO而不是CC债券,对于催化剂来说是新鲜的,与现有的系统形成鲜明对比.
- 这些发现为选择性催化化中地球上丰富的金属的更广泛应用铺平了道路.
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