Using Artificial Neural Network and Ideal Adsorbed Solution Theory for Predicting the CO2/CH4Selectivities of Metal–Organic Frameworks: A Comparative Study

2017 ◽  
Vol 56 (49) ◽  
pp. 14610-14622 ◽  
Author(s):  
Kourosh Esfandiari ◽  
Ali Asghar Ghoreyshi ◽  
Mohsen Jahanshahi
2020 ◽  
Vol 11 (3) ◽  
pp. 643-655 ◽  
Author(s):  
Arpan Kundu ◽  
Kaido Sillar ◽  
Joachim Sauer

A new mixing rule (geometric mean) is proposed with substantial improvements compared to the widely used ideal adsorbed solution theory for adsorbates with strong lateral interactions.


Polyhedron ◽  
2020 ◽  
Vol 192 ◽  
pp. 114857 ◽  
Author(s):  
Zakariyya Uba Zango ◽  
Anita Ramli ◽  
Khairulazhar Jumbri ◽  
Nonni Soraya Sambudi ◽  
Hamza Ahmad Isiyaka ◽  
...  

2014 ◽  
Vol 50 (31) ◽  
pp. 4047-4049 ◽  
Author(s):  
Ru-Jin Li ◽  
Mian Li ◽  
Xiao-Ping Zhou ◽  
Dan Li ◽  
Michael O'Keeffe

A Mn-based rod metal–organic framework (MOF), ROD-6, with a new lrk net is synthesized and studied with Ideal Adsorbed Solution Theory (IAST) for selective gas adsorption.


2007 ◽  
Vol 25 (8) ◽  
pp. 607-619 ◽  
Author(s):  
Timothy M. Nicholson ◽  
Suresh K. Bhatia

The interaction of ethane and ethylene with a Cu-tricarboxylate complex was investigated, showing that at low loadings the lighter molecule has a higher binding energy as a result of interaction with framework Cu and H-bonding with basic framework oxygen atoms. This leads to the selective adsorption of ethylene at low pressure by a factor of ca. 2. This is overcome by the stronger van der Waals interaction of ethane at high loadings, explaining recent literature data. Both experimental data and single-component Grand Canonical Monte Carlo (GCMC) simulations were fitted well with the Unilan model and mixture isotherms were satisfactorily predicted by the Ideal Adsorbed Solution Theory when compared with binary simulation results. Both binary GCMC simulations and Ideal Adsorbed Solution Theory predictions yielded separation factors of ca. 2 and a difference in isosteric heat of 3 kJ/mol. The results suggest that the Cu-BTC framework offers a possible route for the separation of ethane and ethylene, a Holy Grail of adsorption.


Author(s):  
Roberto D’Amato ◽  
Anna Donnadio ◽  
Mariolino Carta ◽  
Claudio Sangregorio ◽  
Riccardo Vivani ◽  
...  

Reaction of cerium ammonium nitrate and tetrafluoroterephthalic acid in water afforded two new metal-organic frameworks with UiO-66 [F4_UiO-66(Ce)] and MIL-140 [F4_MIL-140A(Ce)] topologies. The two compounds can be obtained in the same experimental conditions, just by varying the amount of acetic acid used as crystallization modulator in the synthesis. Both F4_UiO-66(Ce) and F4_MIL-140A(Ce) feature pores with size < 8 Å, which classifies them as ultramicroporous. Combination of X-ray photoelectron spectroscopy and magnetic susceptibility measurements revealed that both compounds contain a small amount of Ce(III), which is preferentially accumulated near the surface of the crystallites. The CO<sub>2</sub> sorption properties of F4_UiO-66(Ce) and F4_MIL-140A(Ce) were investigated, finding that they perform better than their Zr-based analogues. F4_MIL-140A(Ce) displays an unusual S-shaped isotherm with steep uptake increase at pressure < 0.2 bar at 298 K. This makes F4_MIL-140A(Ce) exceptionally selective for CO<sub>2</sub> over N<sub>2</sub>: the calculated selectivity, according to the ideal adsorbed solution theory for a 0.15:0.85 mixture at 1 bar and 293 K, is higher than 1900, amongst the highest ever reported for metal-organic frameworks. The calculated isosteric heat of CO<sub>2 </sub>adsorption is in the range of 38-40 kJ mol<sup>-1</sup>, indicating a strong physisorptive character.


IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Diego Fernando Carrera ◽  
Cesar Vargas-Rosales ◽  
Noe M. Yungaicela-Naula ◽  
Leyre Azpilicueta

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