N/S-Heterocyclic Contaminant Removal from Fuels by the Mesoporous Metal–Organic Framework MIL-100: The Role of the Metal Ion

In this contribution, we present an extensive investigation of adsorption of a range of different gases at various temperatures in DUT-49, a metal-organic framework which features a negative gas adsorption (NGA) transition. Adsorption experiments at temperatures ranging from 21 to 308 K, were used to identify, for each guest, a critical temperature range in which NGA occurs. The experimental results were complemented by molecular simulations that rationalize the absence of NGA at elevated temperatures and the non-monotonic behavior observed upon temperature decrease.

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The role of temperature and adsorbate on negative gas adsorption transitions of the mesoporous metal–organic framework DUT-49

Faraday Discussions ◽

10.1039/d0fd00013b ◽

2021 ◽

Cited By ~ 3

Author(s):

Simon Krause ◽

Jack D. Evans ◽

Volodymyr Bon ◽

Irena Senkovska ◽

François-Xavier Coudert ◽

...

Keyword(s):

Gas Adsorption ◽

Metal Organic Framework ◽

P Adsorption ◽

Metal Organic ◽

Mesoporous Metal ◽

Different Gases ◽

Organic Framework

Adsorption-induced contraction and negative gas adsorption in the mesoporous metal–organic framework DUT-49 for different gases and temperatures.

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The Role of Temperature and Adsorbate on Negative Gas Adsorption in the Mesoporous Metal-Organic Framework DUT-49

10.26434/chemrxiv.11733408 ◽

2020 ◽

Author(s):

Simon Krause ◽

Jack D. Evans ◽

Volodymyr Bon ◽

Irena Senkovska ◽

François-Xavier Coudert ◽

...

Keyword(s):

Elevated Temperatures ◽

Gas Adsorption ◽

Metal Organic Framework ◽

Temperature Decrease ◽

Extensive Investigation ◽

Metal Organic ◽

Mesoporous Metal ◽

Different Gases ◽

Organic Framework

In this contribution, we present an extensive investigation of adsorption of a range of different gases at various temperatures in DUT-49, a metal-organic framework which features a negative gas adsorption (NGA) transition. Adsorption experiments at temperatures ranging from 21 to 308 K, were used to identify, for each guest, a critical temperature range in which NGA occurs. The experimental results were complemented by molecular simulations that rationalize the absence of NGA at elevated temperatures and the non-monotonic behavior observed upon temperature decrease.

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Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

10.26434/chemrxiv.9860891.v1 ◽

2019 ◽

Author(s):

Timothée Stassin ◽

Ivo Stassen ◽

Joao Marreiros ◽

Alexander John Cruz ◽

Rhea Verbeke ◽

...

Keyword(s):

Vapor Phase ◽

Metal Organic Framework ◽

Chemical Vapor ◽

Uptake Capacity ◽

Powder Synthesis ◽

Crystalline Films ◽

Metal Organic ◽

Mesoporous Metal ◽

First Time ◽

Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

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Hydrogenation of CO2 to Methanol by Pt Nanoparticles Encapsulated in UiO-67: Deciphering the Role of the Metal–Organic Framework

Journal of the American Chemical Society ◽

10.1021/jacs.9b10873 ◽

2019 ◽

Vol 142 (2) ◽

pp. 999-1009 ◽

Cited By ~ 21

Author(s):

Emil S. Gutterød ◽

Andrea Lazzarini ◽

Torstein Fjermestad ◽

Gurpreet Kaur ◽

Maela Manzoli ◽

...

Keyword(s):

Metal Organic Framework ◽

Pt Nanoparticles ◽

Hydrogenation Of Co2 ◽

Metal Organic ◽

Organic Framework

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Highly Efficient Adsorption of Aqueous Pb(II) with Mesoporous Metal-Organic Framework-5: An Equilibrium and Kinetic Study

Journal of Nanomaterials ◽

10.1155/2016/8095737 ◽

2016 ◽

Vol 2016 ◽

pp. 1-9 ◽

Cited By ~ 21

Author(s):

José María Rivera ◽

Susana Rincón ◽

Cherif Ben Youssef ◽

Alejandro Zepeda

Keyword(s):

Kinetic Study ◽

Photoelectron Spectroscopy ◽

Metal Organic Framework ◽

Isotherm Models ◽

Ionic Exchange ◽

Order Kinetic ◽

X Ray ◽

Metal Organic ◽

Mesoporous Metal ◽

Organic Framework

Mesoporous metal-organic framework-5 (MOF-5), with the composition Zn4O(BDC)3, showed a high capacity for the adsorptive removal of Pb(II) from 100% aqueous media. After the adsorption process, changes in both morphology and composition were detected using a scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) system, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) analysis. The experimental evidence showed that Zn(II) liberation from MOF-5 structure was provoked by the water effect demonstrating that Pb(II) removal is not due to ionic exchange with Zn. A kinetic study showed that Pb(II) removal was carried out in 30 min with a behavior of pseudo-second-order kinetic model. The experimental data on Pb(II) adsorption were adequately fit by both the Langmuir and BET isotherm models with maximum adsorption capacities of 658.5 and 412.7 mg/g, respectively, at pH 5 and 45°C. The results of this work demonstrate that the use of MOF-5 has great potential for applications in environmental protection, especially regarding the removal of the lead present in industrial wastewaters and tap waters.

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