Zeolite encapsulated organometallic complexes as model catalysts
Zeolite encapsulated organometallic complexes as model catalysts
复制标题
沸石封装的有机金属配合物作为模型催化剂
DOI：
10.1039/d3dt02126b
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发表时间：
2023
影响因子：
4
通讯作者：
Harris, James W.
中科院分区：
文献类型：
--
作者：
Iaia, Ethan P.;Soyemi, Ademola;Szilvási, Tibor;Harris, James W.
在含金属的多孔材料中，活性中心结构的异质性是不可避免的，这使得原子水平上沿着反应坐标发生的化学事件的描述变得复杂。含金属沸石包括具有不同局部配位和二次限制环境的位置，需要仔细的滴定方案来量化主要的活性中心。有机金属-沸石杂化催化剂是一种非常有用的平台材料，可用于多相催化的光谱、动力学和计算研究，避免了传统的含金属多孔材料的复杂性。这类材料已被合成和研究，但催化应用大多局限于液相氧化和电化学反应。这些材料的水热稳定性、流态稳定性以及在气相氧化反应中的应用还有待研究。单位多相催化剂在基础研究中的潜在应用是丰富的，并激励着未来的合成、光谱、动力学和计算研究。
Heterogeneities in the structure of active centers in metal-containing porous materials are unavoidable and complicate the description of chemical events occurring along reaction coordinates at the atomic level. Metal containing zeolites include sites of varied local coordination and secondary confining environments, requiring careful titration protocols to quantify the predominant active sites. Hybrid organometallic-zeolite catalysts are useful well-defined platform materials for spectroscopic, kinetic, and computational studies of heterogeneous catalysis that avoid the complications of conventional metal-containing porous materials. Such materials have been synthesized and studied previously, but catalytic applications were mostly limited to liquid-phase oxidation and electrochemical reactions. The hydrothermal stability, time-on-stream stability, and utility of these materials in gas-phase oxidation reactions are under-studied. The potential applications for single-site heterogeneous catalysts in fundamental research are abundant and motivate future synthetic, spectroscopic, kinetic, and computational studies.