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Highly thermally stable heterogeneous catalysts: study of 0D and 3D porphyrinic MOFs†
CrystEngComm ( IF 3.1 ) Pub Date : 2017-11-13 00:00:00 , DOI: 10.1039/c7ce01702b
E. Amayuelas 1, 2, 3, 4 , A. Fidalgo-Marijuán 4, 5, 6, 7 , B. Bazán 1, 2, 3, 4, 5 , M. K. Urtiaga 1, 2, 3, 4 , G. Barandika 4, 5, 6, 7, 8 , M. I. Arriortua 1, 2, 3, 4, 5
Affiliation  

Heterogeneous catalysts are greatly preferred for green chemistry in many industrial processes and, in the past decade, promising results have been achieved in order to improve the catalytic activity of metal organic frameworks (MOFs). Accordingly, porphyrins make the design of new coordination polymers with better properties possible, taking into account the important functions they develop in nature. In this sense, porphyrin-based MOFs are becoming very relevant in heterogeneous catalysis. Thus, the aim of this work was to obtain metalloporphyrinic MOFs exhibiting catalytic activity. Studying the effect of dimensionality on the MOF properties (including thermal stability and catalytic activity), in this work, we study two catalysts with different dimensionalities, 3D [Ni5(H2TCPP)2O(H2O)4nS (1) and 0D [Cu(H4TCPP)]·6DMF (2) (where H6TCPP is meso-tetra(4-carboxyphenyl)porphyrin, DMF is N,N-dimethylformamide and S is the solvent). The structural features of both compounds, combined with their high thermal stability and accessible networks, are responsible for their excellent behaviour as heterogeneous catalysts. It is worth mentioning that a significant reduction in reaction time compared to other reported catalysts has been observed. The recyclability of one of the herein studied porphyrin-based MOFs is outstanding. Further structural and thermal characterization has been carried out by means of single crystal X-ray diffraction, IR spectroscopy, thermogravimetry (TG), powder X-ray diffraction (XRD) and transmission electron microscopy (TEM).

中文翻译:

高度热稳定的非均相催化剂:0D和3D卟啉MOF的研究

在许多工业过程中,非均相催化剂在绿色化学中是非常优选的,并且在过去的十年中,为了提高金属有机骨架(MOF)的催化活性,已经取得了令人鼓舞的结果。因此,考虑到卟啉在自然界中发挥的重要作用,它使设计具有更好性能的新型配位聚合物成为可能。从这个意义上讲,基于卟啉的MOF在非均相催化中变得非常重要。因此,这项工作的目的是获得表现出催化活性的金属卟啉MOF。为了研究尺寸对MOF性质(包括热稳定性和催化活性)的影响,在这项工作中,我们研究了两种尺寸不同的催化剂,即3D [Ni 5(H 2 TCPP)2 O(H 2 O) 4 n S( 1)和0D [Cu(H 4 TCPP)]·6DMF( 2)(其中H 6 TCPP为内消旋-四(4-羧苯基)卟啉,DMF为N ñ-二甲基甲酰胺,S为溶剂)。两种化合物的结构特征以及其高的热稳定性和可及的网络使它们作为非均相催化剂具有出色的性能。值得一提的是,与其他已报道的催化剂相比,已观察到反应时间的显着减少。本文研究的基于卟啉的MOF之一的可回收性是优异的。已经通过单晶X射线衍射,IR光谱,热重分析(TG),粉末X射线衍射(XRD)和透射电子显微镜(TEM)进行了进一步的结构和热表征。
更新日期:2017-11-13
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