Gas Adsorption Study on Mesoporous Metal−Organic Framework UMCM-1

2010 ◽  
Vol 114 (14) ◽  
pp. 6464-6471 ◽  
Author(s):  
Bin Mu ◽  
Paul M. Schoenecker ◽  
Krista S. Walton
Keyword(s):  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Adsorption Study ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Organic Framework

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

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.

Assembly of an indium–porphyrin framework JLU-Liu7: a mesoporous metal–organic framework with high gas adsorption and separation of light hydrocarbons

2017 ◽  
Vol 4 (1) ◽  
pp. 139-143 ◽  
Author(s):  
Jiahuan Luo ◽  
Jing Wang ◽  
Yu Cao ◽  
Shuo Yao ◽  
Lirong Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Light Hydrocarbon ◽  
Light Hydrocarbons ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Organic Framework

A novel mesoporous indium–porphyrin framework JLU-Liu7 with frl net has been successfully synthesized. It exhibits high performance for gas adsorption and light hydrocarbon separation.

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

2021 ◽  
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.

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

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.

scholarly journals Molecular Diffusion in a Flexible Mesoporous Metal-Organic Framework over the Course of Structural Contraction

2020 ◽  
Author(s):  
Francesco Walenszus ◽  
Volodymyr Bon ◽  
Jack D. Evans ◽  
Stefan Kaskel ◽  
Muslim Dvoyashkin
Keyword(s):  
Molecular Diffusion ◽  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Self Diffusion ◽  
Metal Organic ◽  
Flexible Metal ◽  
Dynamics Simulations ◽  
Pfg Nmr ◽  
Mesoporous Metal ◽  
Organic Framework

In situ <sup>1</sup>H pulsed field gradient (PFG) NMR was used to investigate molecular diffusion of n-butane at 298 K during the negative gas adsorption (NGA) transition caused by contraction of the flexible metal-organic framework DUT-49(Cu). Supported by molecular dynamics simulations, it provided crucial insight to confined diffusion within a highly-flexible pore environment. The self-diffusion coefficients were derived from the experiment and compared with simulations, capturing the diffusion during n-butane adsorption and desorption. This complementary approach has yielded experimental characterization of molecular diffusion mechanisms during the unique process of NGA. <br>

scholarly journals Molecular Diffusion in a Flexible Mesoporous Metal-Organic Framework over the Course of Structural Contraction

2020 ◽  
Author(s):  
Francesco Walenszus ◽  
Volodymyr Bon ◽  
Jack D. Evans ◽  
Stefan Kaskel ◽  
Muslim Dvoyashkin
Keyword(s):  
Molecular Diffusion ◽  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Self Diffusion ◽  
Metal Organic ◽  
Flexible Metal ◽  
Dynamics Simulations ◽  
Pfg Nmr ◽  
Mesoporous Metal ◽  
Organic Framework

In situ <sup>1</sup>H pulsed field gradient (PFG) NMR was used to investigate molecular diffusion of n-butane at 298 K during the negative gas adsorption (NGA) transition caused by contraction of the flexible metal-organic framework DUT-49(Cu). Supported by molecular dynamics simulations, it provided crucial insight to confined diffusion within a highly-flexible pore environment. The self-diffusion coefficients were derived from the experiment and compared with simulations, capturing the diffusion during n-butane adsorption and desorption. This complementary approach has yielded experimental characterization of molecular diffusion mechanisms during the unique process of NGA. <br>

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

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.

Triple Framework Interpenetration and Immobilization of Open Metal Sites within a Microporous Mixed Metal–Organic Framework for Highly Selective Gas Adsorption

2012 ◽  
Vol 51 (9) ◽  
pp. 4947-4953 ◽  
Author(s):  
Zhangjing Zhang ◽  
Shengchang Xiang ◽  
Kunlun Hong ◽  
Madhab, C. Das ◽  
Hadi D. Arman ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Mixed Metal ◽  
Open Metal Sites ◽  
Metal Organic ◽  
Organic Framework

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

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
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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