Three isoreticular MOFs derived from nitrogen-functionalized diisophthalate ligands: exploring the positional effect of nitrogen functional sites on the structural stabilities and selective C2H2/CH4 and CO2/CH4 adsorption properties

2018 ◽  
Vol 5 (6) ◽  
pp. 1423-1431 ◽  
Author(s):  
Dongjie Bai ◽  
Xiaoxia Gao ◽  
Minghui He ◽  
Yao Wang ◽  
Yabing He
Keyword(s):  
Structural Stability ◽  
Gas Adsorption ◽  
Adsorption Property ◽  
Adsorption Properties ◽  
Functional Sites ◽  
Positional Effect ◽  
Ch4 Adsorption

The positional effect of nitrogen functional sites on the structural stability and gas adsorption property was explored in a family of ssa-type MOFs.

Three ligand-originated MOF isomers: the positional effect of the methyl group on structures and selective C2H2/CH4 and CO2/CH4 adsorption properties

2018 ◽  
Vol 47 (27) ◽  
pp. 8983-8991 ◽  
Author(s):  
Minghui He ◽  
Yao Wang ◽  
Xiaoxia Gao ◽  
Saidan Li ◽  
Yabing He
Keyword(s):  
Gas Adsorption ◽  
Adsorption Properties ◽  
Methyl Group ◽  
Positional Effect ◽  
Ch4 Adsorption

The positional effect of the methyl group on structures and gas adsorption properties was explored in a copper-based MOF platform constructed from bent diisophthalate ligands bearing the methyl group at different positions.

Three isoreticular ssa-type MOFs derived from bent diisophthalate ligands: exploring the substituent effect on structural stabilities and selective C2H2/CH4 and CO2/CH4 adsorption properties

2018 ◽  
Vol 47 (36) ◽  
pp. 12702-12710 ◽  
Author(s):  
Yao Wang ◽  
Minghui He ◽  
Xiaoxia Gao ◽  
Piao Long ◽  
Yingying Zhang ◽  
...  
Keyword(s):  
Substituent Effect ◽  
Gas Adsorption ◽  
Adsorption Properties ◽  
Ch4 Adsorption

Three isoreticular ssa-type MOFs exhibit substituent-dependent framework stabilities against desolvation and gas adsorption properties.

scholarly journals Improving the CH4 adsorption property and the CO2/CH4 separation of IRMOF-3 by functionalizing the organic linker

2016 ◽  
Vol 19 (3) ◽  
pp. 76-84
Author(s):  
Khung Moc Trang
Keyword(s):  
Functional Groups ◽  
Gas Adsorption ◽  
Adsorption Property ◽  
Diverse Range ◽  
Ideal Adsorbed Solution Theory ◽  
Gcmc Simulation ◽  
High Pressure Range ◽  
Ch4 Uptake ◽  
Ch4 Adsorption ◽  
Organic Linker

Grand Canonical Monte Carlo (GCMC) simulation combining with the ideal adsorbed Solution Theory (IAST) are employed to study the effect of functionality on the CH4 adsorption property and CO2/CH4 selectivity of modified irmof-3 structures which include a diverse range of functional groups. The result shows that phenyl groups containing nitrogen (e.g. pyrazine, pyridine) and carboxyl group are able to increase the interaction energy between gas and mof, thereby increasing the gas adsorption capacity. In addition, transition metals can significantly enhance the CO2/CH4 selectivity. The straight-chain alkyl group and aniline groups just slightly improve the material property compared to other functional groups. We also note that materials with more than 50 percent of modification do not show a good performance at high pressure range (35–40 atm) due to its low porosity. We herein show that the functionalization of IRMOF-3 can remarkably improve the CH4 uptake and CO2/CH4 separation; particularly, GCMC simulation is demonstrated as a beneficial tool to aid experimental chemists in designing new promising porous materials.

scholarly journals 3D Metal–Organic Frameworks Based on Co(II) and Bithiophendicarboxylate: Synthesis, Crystal Structures, Gas Adsorption, and Magnetic Properties

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1269
Author(s):  
Vadim A. Dubskikh ◽  
Anna A. Lysova ◽  
Denis G. Samsonenko ◽  
Alexander N. Lavrov ◽  
Konstantin A. Kovalenko ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
Magnetic Moments ◽  
Bet Surface Area ◽  
Separation Performance ◽  
Bridging Ligands ◽  
Magnetization Data ◽  
Metal Organic ◽  
Ch4 Adsorption ◽  
Gas Separation Performance

Three new 3D metal-organic porous frameworks based on Co(II) and 2,2′-bithiophen-5,5′-dicarboxylate (btdc2−) [Co3(btdc)3(bpy)2]·4DMF, 1; [Co3(btdc)3(pz)(dmf)2]·4DMF·1.5H2O, 2; [Co3(btdc)3(dmf)4]∙2DMF∙2H2O, 3 (bpy = 2,2′-bipyridyl, pz = pyrazine, dmf = N,N-dimethylformamide) were synthesized and structurally characterized. All compounds share the same trinuclear carboxylate building units {Co3(RCOO)6}, connected either by btdc2– ligands (1, 3) or by both btdc2– and pz bridging ligands (2). The permanent porosity of 1 was confirmed by N2, O2, CO, CO2, CH4 adsorption measurements at various temperatures (77 K, 273 K, 298 K), resulted in BET surface area 667 m2⋅g−1 and promising gas separation performance with selectivity factors up to 35.7 for CO2/N2, 45.4 for CO2/O2, 20.8 for CO2/CO, and 4.8 for CO2/CH4. The molar magnetic susceptibilities χp(T) were measured for 1 and 2 in the temperature range 1.77–330 K at magnetic fields up to 10 kOe. The room-temperature values of the effective magnetic moments for compounds 1 and 2 are μeff (300 K) ≈ 4.93 μB. The obtained results confirm the mainly paramagnetic nature of both compounds with some antiferromagnetic interactions at low-temperatures T < 20 K in 2 between the Co(II) cations separated by short pz linkers. Similar conclusions were also derived from the field-depending magnetization data of 1 and 2.

scholarly journals Gas Porosimetry by Gas Adsorption as an Efficient Tool for the Assessment of the Shaping Effect in Commercial Zeolites

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1205
Author(s):  
Alejandro Orsikowsky-Sanchez ◽  
Christine Franke ◽  
Alexander Sachse ◽  
Eric Ferrage ◽  
Sabine Petit ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Strong Interaction ◽  
Gas Adsorption ◽  
Co2 Adsorption ◽  
Adsorption Properties ◽  
Preparation Process ◽  
Pore Filling ◽  
Irreversible Adsorption ◽  
Efficient Tool ◽  
4A Zeolite

A set of three commercial zeolites (13X, 5A, and 4A) of two distinct shapes have been characterized: (i) pure zeolite powders and (ii) extruded spherical beads composed of pure zeolite powders and an unknown amount of binder used during their preparation process. The coupling of gas porosimetry experiments using argon at 87 K and CO2 at 273 K allowed determining both the amount of the binder and its effect on adsorption properties. It was evidenced that the beads contain approximately 25 wt% of binder. Moreover, from CO2 adsorption experiments at 273 K, it could be inferred that the binder present in both 13X and 5A zeolites does not interact with the probe molecule. However, for the 4A zeolite, pore filling pressures were shifted and strong interaction with CO2 was observed leading to irreversible adsorption of the probe. These results have been compared to XRD, IR spectroscopy, and ICP-AES analysis. The effect of the binder in shaped zeolite bodies can thus have a crucial impact on applications in adsorption and catalysis.

The synthesis, characterization, and theoretical hydrogen gas adsorption properties of copper(II)-3,3′-thiodipropionate complexes with imidazole derivatives

2013 ◽  
Vol 66 (23) ◽  
pp. 4093-4106 ◽  
Author(s):  
Mürsel Arici ◽  
Okan Zafer Yeşılel ◽  
Seda Keskın ◽  
Onur Şahın ◽  
Orhan Büyükgüngör
Keyword(s):  
Gas Adsorption ◽  
Adsorption Properties ◽  
Hydrogen Gas ◽  
Imidazole Derivatives

Enhanced gas adsorption property of hybrid nanopore-structured copper oxide synthesized from the carbon nanotube/copper composites

2010 ◽  
Vol 108 (6) ◽  
pp. 064303 ◽  
Author(s):  
Min Ha Lee ◽  
Kyung Tae Kim ◽  
Thomas Gemming ◽  
Daniel J. Sordelet ◽  
Jürgen Eckert
Keyword(s):  
Carbon Nanotube ◽  
Copper Oxide ◽  
Gas Adsorption ◽  
Adsorption Property

Effects of electric field and biaxial strain on the (NO2, NO, O2, and SO2) gas adsorption properties of Sc2CO2 monolayer

2021 ◽  
pp. 107135
Author(s):  
Khang D. Pham ◽  
Pham Cong Dinh ◽  
Do Van Diep ◽  
Tuan V. Vu ◽  
Hai L. Luong ◽  
...  
Keyword(s):  
Electric Field ◽  
Gas Adsorption ◽  
Adsorption Properties ◽  
Biaxial Strain ◽  
So2 Gas
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