Au@Cu(II)-MOF: Highly Efficient Bifunctional Heterogeneous Catalyst for Successive Oxidation–Condensation Reactions

Wang, Jing-Si; Jin, Fazheng; Ma, Hua; Li, Xiaobo; Li, Mingyang; Kan, Jing‐Lan; Chen, Gong-Jun; Dong, Yu‐Bin

doi:10.1021/acs.inorgchem.6b00925

Cited by 105 publications

(45 citation statements)

References 68 publications

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“…As to the supported active phase, the structure of metal-organic frameworks can provide different anchoring sites for the reactants. In this case, the MOF-based heterogeneous system acts as a bifunctional catalyst thanks to both interesting adsorption and catalytic properties [124].…”

Section: Hybrid Materials In the Form Of Mof Host Matrices Containingmentioning

confidence: 99%

Metal–Organic Frameworks-Based Catalysts for Biomass Processing

2018

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: Currently, metal–organic frame works (MOFs) as novel hybrid nanoporous materials are a top research interest, including endeavors in heterogeneous catalysis. MOF materials are promising heterogeneous catalytic systems due to their unique characteristics, such as a highly ordered structure, a record high surface area and a compositional diversity, which can be precisely tailored. Very recently, these metal-organic matrices have been proven as promising catalysts for biomass conversion into value-added products. The relevant publications show that the structure of MOFs can contribute essentially to the advanced catalytic performance in processes of biomass refining. This review aims at the consideration of the different ways for the rational design of MOF catalysts for biomass processing. The particular characteristics and peculiarities of the behavior of different MOF based catalytic systems including hybrid nanomaterials and composites will be also discussed by illustrating their outstanding performance with appropriate examples relevant to biomass catalytic processing.

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Section: Hybrid Materials In the Form Of Mof Host Matrices Containingmentioning

confidence: 99%

Metal–Organic Frameworks-Based Catalysts for Biomass Processing

2018

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“…5,6 MOFs of high dimensionalities and high specific surface areas are promising candidates in heterogeneous catalysis, [7][8][9] as the big challenge to gain a foothold in reactions where homogeneous catalysts prevail, including hydrocarbons oxidation, alcohols oxidation and Knoevenagel condensation among others. [10][11][12][13][14] In this context, the selective oxidation of alcohols to aldehydes is a valuable intermediate for the synthesis of many organic compounds, which are widely used in industry, such as pharmaceutical, perfume, plastic, dyestuff and agrochemical. 15 While considerable progress has been made using noble metal nanoparticles, 16,17 it would still be desirable to develop catalysts based on less expensive metals and processes.…”

Section: Introductionmentioning

confidence: 99%

Highly thermally stable heterogeneous catalysts: study of 0D and 3D porphyrinic MOFs

et al. 2017

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Heterogeneous catalysts are a great bet 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 possible to design new coordination polymers with better properties, 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 obtaining 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)4]·nS (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 the excellent behaviour as heterogeneous catalysts. It is worth mentioning that 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).

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“…To evaluate their possibilities for catalytic application, Au‐ X @NMOF‐Ni composites were examined by a model reaction of 4‐nitrophenol (4‐NP) reduction with NaBH 4 in water, which is thermodynamically favorable . As is well‐known, Au NPs are able to catalyze this reaction owing to the reactive surface, which benefits effective hydrogen transfer from NaBH 4 to phenolic nitro compounds .…”

Section: Resultsmentioning

confidence: 99%

Ultrasmall Au Nanoparticles Embedded in 2D Mixed‐Ligand Metal–Organic Framework Nanosheets Exhibiting Highly Efficient and Size‐Selective Catalysis

Yan

Yang

et al. 2018

Adv Funct Materials

124

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Metal-organic frameworks (MOFs) hold great promise as porous matrixes for the incorporation of Au nanoparticles (NPs) because of their rationally designed framework structures. Unfortunately, the as-synthesized bulk MOFs usually vary in the range of micrometer or sub-micrometer size, rendering extremely longer molecular diffusion distance of chemical species. 2D MOF nanosheets with extended lateral dimensions and nanometer thickness are expected to implement fast kinetics and effectively lower mass-transfer barriers during embedding Au NPs process and sequential catalytic reactions. In this study, a novel 2D nanosheet of mixed-ligand Ni(II) MOF (referred to NMOF-Ni) is successfully fabricated. With the merits of well-defined micropores and functional oxygendecorated inner walls, the incorporation of quite monodisperse ultrasmall Au nanoparticles of around 1 nm into NMOF-Ni has been achieved for the first time. The resulting nanocomposites exhibit remarkable catalytic performance and good size selectivity toward aqueous reduction reactions of nitrophenol, taking advantage of ultrasmall Au and 2D nanosheet nature, as well as the intact microporosity of host matrix. The present encouraging findings might shed light on new ways to develop high-performance heterogeneous catalysts by using of 2D MOF nanosheets with functional cavities as hosts for homogeneous distribution of ultrasmall Au NPs. Figure 5. a) Schematic illustration of size selection effect of Au-1@NMOF-Ni for 4-NP and MG 17. b) Catalytic conversion of MG 17 and 4-NP over Au-1@NMOF-Ni. c) Catalytic conversion of MG 17 and 4-NP over pure Au NPs. www.afm-journal.de www.advancedsciencenews.com 1802021 (8 of 8)

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Au@Cu(II)-MOF: Highly Efficient Bifunctional Heterogeneous Catalyst for Successive Oxidation–Condensation Reactions

Cited by 105 publications

References 68 publications

Metal–Organic Frameworks-Based Catalysts for Biomass Processing

Metal–Organic Frameworks-Based Catalysts for Biomass Processing

Highly thermally stable heterogeneous catalysts: study of 0D and 3D porphyrinic MOFs

Ultrasmall Au Nanoparticles Embedded in 2D Mixed‐Ligand Metal–Organic Framework Nanosheets Exhibiting Highly Efficient and Size‐Selective Catalysis

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