金属有机骨架中催化位点的密度泛函理论研究

Siwarut Siwaipram, Sarawoot Impeng, P. Bopp, S. Bureekaew
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引用次数: 3

摘要

理论方法已成为许多化学和材料研究领域不可缺少的工具。金属有机骨架(MOFs)是多孔材料;由于它们具有多种特性,适用于广泛的应用,因此得到了广泛的开发。因此,理论方法经常用于mof的设计和表征。我们在此特别着重于mof腔内发生的单位点催化反应的理论研究。密度泛函方法(DFT)一直是这类研究的主要方法。我们简要回顾了DFT在mof中催化反应研究中的应用。我们注意到DFT方法是通用的,可以用于不同的目的,例如,用于分子模拟的力场发展。但是,我们将非常简洁地讨论这一领域,以便将其与我们的主题联系起来。不同连接体上的官能团使用阴离子。铁的三维轨道能量与连接体上官能团的给电子强度相关,结果表明,铁的三维轨道能量与连接体上官能团的给电子强度相关。结果表明,具有1 - 2个nh2基团的连接体降低了氧化途径中最吸热步骤的热势垒。这说明了通过选择哪些可能对升级某些碳氢化合物有用来了解密集活性可能的使用
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Density Functional Theory Studies of Catalytic Sites in Metal- Organic Frameworks
Theoretical methods have become indispensable tools in many fields of chemistry and materials research. Metal-organic frameworks (MOFs) are porous materials; they have been intensively developed due to their diverse properties suitable for a wide range of applications. Theoretical approaches have thus been frequently employed toward the design and characterization of MOFs. We focus here in particular on theoretical studies of single-site catalytic reactions that occur inside the cavities of MOFs. The density func tional method (DFT) has been the main approach used for such studies. We briefly review the uses of DFT to examine the catalytic reactions in MOFs. We note that DFT methods are versatile and can be made to work for different purposes such as, e.g., force-field development for molecular simulations. We shall, however, cover this field only very succinctly to put it into context with our main topic. functionalized groups on different linkers as using the anion. The concluded that the of the d-orbital was significantly by the The 3d orbital energy of Fe correlated with the electron-donating strength of the functional groups on the linkers. The results reveal that linkers with ▬ NH 2 groups reduce the enthalpic barrier for the most endothermic step in the oxidation pathway. This illustrates the use of to understand intensive The activ might by selecting which might useful for upgrading certain hydrocarbon
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