Fine tuning of the metal–organic framework Cu3(BTC)2 HKUST-1 crystal size in the 100 nm to 5 micron range

Wee, Lik Hong; Lohe, Martin R.; Janssens, Nikki; Kaskel, Stefan; Martens, Johan A.

doi:10.1039/c2jm31536j

Cited by 171 publications

(149 citation statements)

References 57 publications

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“…As shown in Fig. 2, the XRD pattern of HKUST-1 in this study was essentially identical to that of HKUST-1 powder reported in literature [19]. In the XRD pattern of carbon supported Cu/Cu 2 O, the diffraction peaks and relative intensities could be readily indexed to crystalline Cu (JCPDS NO.…”

Section: Structural and Morphological Characterizationsupporting

confidence: 63%

MOF derived porous carbon supported Cu/Cu 2 O composite as high performance non-noble catalyst

Niu

Liu

Cai

et al. 2016

Microporous and Mesoporous Materials

156

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a b s t r a c tPorous carbon supported copper composite (Cu/Cu 2 O/C) was synthesized with a facile, low cost and novel method and used as non-noble-metal catalyst for reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH 4 . In the synthetic strategy, metal organic framework Cu 3 (BTC) 2 (also denoted as HKUST-1) was used as both sacrificial template and copper precursor, and phenol formaldehyde resin as carbon precursor. The catalytic Cu/Cu 2 O nanoparticles (Cu/Cu 2 O NPs) about 40 nm-indiameter distributed uniformly both on the internal and external surface of the porous carbon flakes, and took up 33.38e37.56 wt% of the Cu/Cu 2 O/C composite. Compared with noble metal catalysts, the prepared composite showed comparable high catalytic activity, which was mainly due to their porous structure facilitating diffusion of reactants and products, and the high dispersion of accessible catalytic Cu/Cu 2 O NPs on porous carbon. Moreover, the synthesized catalyst can be reused for at least five cycles due to its good stability. These results confirmed that the as-prepared Cu/Cu 2 O/C is promising candidate to replace noble metal for catalytic application.

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Section: Structural and Morphological Characterizationsupporting

confidence: 63%

MOF derived porous carbon supported Cu/Cu 2 O composite as high performance non-noble catalyst

Niu

Liu

Cai

et al. 2016

Microporous and Mesoporous Materials

156

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“…This high variability, along with the possibility to introduce new functionalities in a pre-formed MOF by post-synthesis modification [10][11][12], allow to finely tune the chemical compositions, chemical environment and pore structures of the materials and thus, their reactivity. The Lewis acid catalytic properties of MOFs have already been demonstrated for many reactions, including cyanosilylation of carbonyl compounds [13][14][15][16], epoxide methanolysis [17], isomerizations of -pinene oxide and citronellal [18,19], Friedländer condensation [20], alkene cyclopropanation [21], etc. In many cases, the Lewis acid character of the MOF is induced by the creation of a coordination vacancy upon thermal removal of a solvent molecule (H 2 O) initially bound to the metallic nodes.…”

Section: Methodsmentioning

confidence: 99%

Zirconium-containing metal organic frameworks as solid acid catalysts for the esterification of free fatty acids: Synthesis of biodiesel and other compounds of interest

2015

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Zr-containing metal-organic frameworks (MOFs) formed by terephthalate (UiO-66) and 2-aminoterephthalate ligands (UiO-66-NH 2 ) are active and stable catalysts for the acid catalyzed esterification of various saturated and unsaturated fatty acids with MeOH and EtOH, with activities comparable (in some cases superior) to other solid acid catalysts previously reported in literature. Besides the formation of the corresponding fatty acid alkyl esters as biodiesel compounds (FAMEs and FAEEs), esterification of biomassderived fatty acids with other alcohols catalyzed by the Zr-MOFs allows preparing other compounds of interest, such as oleyl oleate or isopropyl palmitate, with good yields under mild conditions. 2

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“…This high variability, along with the possibility to introduce new functionalities in a pre-formed MOF by post-synthesis modification (Wang and Cohen, 2009;Zhang et al, 2009), allow to finely tune the chemical compositions, chemical environment and pore structures of the materials and thus, their reactivity. The Lewis acid catalytic properties of MOFs have already been demonstrated for many reactions, including cyanosilylation of carbonyl compounds (Fujita et al, 1994;Henschel et al, 2008;Horike et al, 2008;Schlichte et al, 2004), epoxide methanolysis (Wee et al, 2012), isomerizations of α-pinene oxide and citronellal (Alaerts et al, 2006;Cirujano et al, 2012), Friedländer condensation (Pérez-Mayoral and Cejka, 2011), alkene cyclopropanation (Corma et al, 2010b), etc. In many cases, the Lewis acid character of the MOF comes from the creation of a coordination vacancy upon thermal removal of a solvent molecule (usually H 2 O) initially bound to the metallic nodes.…”

Section: Introductionmentioning

confidence: 99%

Conversion of levulinic acid into chemicals: Synthesis of biomass derived levulinate esters over Zr-containing MOFs

Cirujano

Corma

Xamena

2015

Chemical Engineering Science

246

134

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Zr-containing metal-organic frameworks (MOFs) formed by terephthalate and 2-aminoterephthalate ligands (UiO-66-NH 2 ) are active and stable catalysts for the acid catalyzed esterification of levulinic acid with EtOH, n-BuOH and long-chain biomass derived alcohols, with activities comparable (in some cases superior) to other solid acid catalysts previously reported. The effect of functional group substitution at the ligand benzene ring, alcohol chain length, particle size and contents of defects on the catalytic activity of the MOFs are studied in detail. In UiO-66-NH 2 , a dual acid-base activation mechanism is proposed, in which levulinic acid is activated on Zr sites and the alcohol at the amino groups of the ligand. Large variations of the catalytic activity from batch to batch suggest that the active sites are located at defect positions associated to ligand deficiency of the solid. Particle size seems to have a minor impact only in UiO-66-NH 2 , in which diffusion of levulinic acid is somehow hindered due to the amino groups present in the linkers.

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Fine tuning of the metal–organic framework Cu3(BTC)2 HKUST-1 crystal size in the 100 nm to 5 micron range

Cited by 171 publications

References 57 publications

MOF derived porous carbon supported Cu/Cu 2 O composite as high performance non-noble catalyst

MOF derived porous carbon supported Cu/Cu 2 O composite as high performance non-noble catalyst

Zirconium-containing metal organic frameworks as solid acid catalysts for the esterification of free fatty acids: Synthesis of biodiesel and other compounds of interest

Conversion of levulinic acid into chemicals: Synthesis of biomass derived levulinate esters over Zr-containing MOFs

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