A metal–organic framework MIL-101 doped with metal nanoparticles (Ni &amp; Cu) and its effect on CO<sub>2</sub>adsorption properties

Montazerolghaem, Maryam; Aghamiri, Seyed Foad; Tangestaninejad, Shahram; Talaie, Mohammad Reza

doi:10.1039/c5ra22450k

Cited by 49 publications

(16 citation statements)

References 55 publications

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“…The differences in relative intensity between the low angle peaks (at less than 6 • 2θ ) and those at higher angle (greater than 8 • 2θ ) in the measured pattern compared to the simulated pattern is accounted for by the presence of solvent in the as-prepared sample; in contrast, the simulated pattern is for an idealised guest-free framework. These X-ray powder patterns are typical of MIL-101 samples reported in the literature [44][45][46]. There is also evidence in the PXRD for the presence of an impurity phase in the sample, which we identify below as being MIL-88B ( Figure 1) [47].…”

Section: Resultssupporting

confidence: 73%

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

et al. 2019

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The metal–organic framework MIL-101(Cr) is known as a solid–acid catalyst for the solution conversion of biomass-derived glucose to 5-hydroxymethyl furfural (5-HMF). We study the substitution of Cr3+ by Fe3+ and Sc3+ in the MIL-101 structure in order to prepare more environmentally benign catalysts. MIL-101(Fe) can be prepared, and the inclusion of Sc is possible at low levels (10% of Fe replaced). On extended synthesis times the polymorphic MIL-88B structure instead forms.Increasing the amount of Sc also only yields MIL-88B, even at short crystallisation times. The MIL-88B structure is unstable under hydrothermal conditions, but in dimethylsulfoxide solvent, it provides 5-HMF from glucose as the major product. The optimum material is a bimetallic (Fe,Sc) form of MIL-88B, which provides ~70% conversion of glucose with 35% selectivity towards 5-HMF after 3 hours at 140 °C: this offers high conversion compared to other heterogeneous catalysts reported in the same solvent.

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Section: Resultssupporting

confidence: 73%

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

et al. 2019

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“…So this leaching is likely due to remaining Cr in the pores, which is not removed during washing of the framework. To decrease the catalyst leaching, microwave irradiation was used before recycling tests . As evident from Table , after activation of the catalyst, the leaching of Cr decreased and the product yield and the catalyst reusability improved.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient oxidative cleavage of alkenes and cyanosilylation of aldehydes catalysed by magnetically recoverable MIL‐101

Nourian

Zadehahmadi

Kardanpour

et al. 2017

Applied Organom Chemis

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The catalytic activity of magnetically recoverable MIL-101 was investigated in the oxidation of alkenes to carboxylic acids and cyanosilylation of aldehydes.MIL-101 was treated with Fe 3 O 4 and the prepared catalyst was characterized using Fourier transform infrared spectroscopy, X-ray diffraction, N 2 adsorption measurements, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy and inductively coupled plasma analysis. The catalytic active sites in this heterogeneous catalyst are Cr 3+ nodes of the MIL-101framework. This heterogeneous catalyst has the advantages of excellent yields, short reaction times and reusability several times without significant decrease in its initial activity and stability in both oxidation and cyanosilylation reactions. Its magnetic property allows its easy separation using an external magnetic field.

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“…Metal-organic frameworks (MOFs) have attracted attention because of their higher thermal stability, good crystallinity, large surface area, and high pore volume (Yulia et al, 2019). MIL-101 is the most attractive MOF for study due to its high thermal and chemical stability, moisture resistance, rapid kinetics, good cyclability, and high adsorption capacity (Liu et al, 2013;Montazerolghaem et al, 2016). MIL-101 is an expected candidate in the future as it is eco-friendly and has better physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterizations, and Adsorption Isotherms of CO2 on Chromium Terephthalate (MIL-101) Metal-organic Frameworks (Mofs)

Yulia¹,

Utami²,

Nasruddin³

et al. 2019

IJTech

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The concentration of CO2 in the atmosphere caused by fossil fuels, power plants, and transportation is the most significant environmental issue in the world today. Intensive efforts have been made to minimize CO2 levels to reduce global warming. Metal-organic frameworks (MOFs), crystalline porous materials, exhibit great potential to adsorb carbon dioxide. In the present study, research was conducted on the synthesis, characterization, and adsorption isotherms of MIL-101. MIL-101, one type of mesoporous MOF, can adsorb enormous amounts of CO2. The synthesis was carried out using a fluorine-free hydrothermal reaction method. The porous properties, structure, morphology, thermal stability, and chemical functionalities of MIL-101 Cr were measured by N2 adsorption/desorption isotherms, X-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) analysis, respectively. The volumetric uptakes of CO2 were experimentally measured at temperatures of 298-308 K and pressure of up to 600 kPa. The experimental result was correlated with the Toth isotherm model, showing the heterogeneity of the adsorbent. The heat of adsorption of MIL-101 was determined from the measured isotherm data, indicating the strength between the adsorbent and adsorbate molecule.

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A metal–organic framework MIL-101 doped with metal nanoparticles (Ni & Cu) and its effect on CO₂adsorption properties

Abstract: In this work, Cu- and Ni-doped MIL-101 were synthesizedviaa microwave irradiation technique and used as adsorbents for CO2adsorption. The loading of MNPs in MIL-101 showed a beneficial effect on the adsorption capacity and cyclability.

Cited by 49 publications

References 55 publications

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

Highly efficient oxidative cleavage of alkenes and cyanosilylation of aldehydes catalysed by magnetically recoverable MIL‐101

Synthesis, Characterizations, and Adsorption Isotherms of CO2 on Chromium Terephthalate (MIL-101) Metal-organic Frameworks (Mofs)

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A metal–organic framework MIL-101 doped with metal nanoparticles (Ni & Cu) and its effect on CO2adsorption properties

Abstract: In this work, Cu- and Ni-doped MIL-101 were synthesizedviaa microwave irradiation technique and used as adsorbents for CO2adsorption. The loading of MNPs in MIL-101 showed a beneficial effect on the adsorption capacity and cyclability.

Cited by 49 publications

References 55 publications

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

Replacement of Chromium by Non-Toxic Metals in Lewis-Acid MOFs: Assessment of Stability as Glucose Conversion Catalysts

Highly efficient oxidative cleavage of alkenes and cyanosilylation of aldehydes catalysed by magnetically recoverable MIL‐101

Synthesis, Characterizations, and Adsorption Isotherms of CO2 on Chromium Terephthalate (MIL-101) Metal-organic Frameworks (Mofs)

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A metal–organic framework MIL-101 doped with metal nanoparticles (Ni & Cu) and its effect on CO₂adsorption properties