Montmorillonite-based heterogeneous catalysts for efficient organic reactions
Montmorillonite-based heterogeneous catalysts for efficient organic reactions
复制标题
用于高效有机反应的蒙脱石基多相催化剂
DOI：
10.1088/2632-959x/ac5ac3
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发表时间：
2022
期刊：
影响因子：
3
通讯作者：
Motokura Ken
中科院分区：
文献类型：
--
作者：
Takabatake Moe;Motokura Ken
在这篇综述中，我们给出了一个简短的概述，最近开发的蒙脱石基多相催化剂用于有效的有机反应。介绍和讨论了用于选择性催化的阳离子交换蒙脱土催化剂、蒙脱土负载金属催化剂和层间设计。在传统的合成中，均相酸和金属盐作为催化剂，但催化剂与产物的分离困难是考虑工业化的瓶颈。固体多相催化剂的使用是克服这一问题的主要解决方案之一。蒙脱石可用作非均相催化剂和/或催化剂载体。由于其独特的层状结构，这种粘土材料表现出强酸性和对活性物质（如金属纳米颗粒）的稳定作用。这些优点导致了基于蒙脱石的非均相催化剂的发展。酸性蒙脱石，如质子交换蒙脱石，对亲电试剂如醇、烯烃甚至烷烃的活化表现出高催化活性。蒙脱石层间/表面还用作用于氧化和碳-碳键形成反应的各种金属物质的良好载体。夹层结构的使用能够实现选择性反应和催化活性物质的稳定化。
In this review, we give a brief overview of recently developed montmorillonite-based heterogeneous catalysts used for efficient organic reactions. Cation-exchanged montmorillonite catalysts, metal catalysts supported on montmorillonite, and an interlayer design used for selective catalysis are introduced and discussed. In traditional syntheses, homogeneous acids and metal salts were used as catalysts, but the difficulty in separation of catalysts from products was a bottleneck when considering industrialization. The use of solid heterogeneous catalysts is one of the major solutions to overcome this problem. Montmorillonite can be used as a heterogeneous catalyst and/or catalyst support. This clay material exhibits strong acidity and a stabilizing effect on active species, such as metal nanoparticles, due to its unique layered structure. These advantages have led to the development of montmorillonite-based heterogeneous catalysts. Acidic montmorillonite, such as proton-exchanged montmorillonite, exhibits a high catalytic activity for the activation of electrophiles, such as alcohols, alkenes, and even alkanes. The montmorillonite interlayer/surface also functions as a good support for various metal species used for oxidation and carbon-carbon bond forming reactions. The use of an interlayer structure enables selective reactions and the stabilization of catalytically active species.