A lithium-modified zirconium-based metal organic framework (UiO-66) for efficient CO2 adsorption

2018 ◽  
Vol 42 (24) ◽  
pp. 19764-19770 ◽  
Author(s):  
Zhaodong Niu ◽  
Qingqing Guan ◽  
Yuzhen Shi ◽  
Yuan Chen ◽  
Qiuling Chen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Adsorption Mechanism ◽  
Co2 Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

The adsorption mechanism of carbon dioxide (CO2) on Li/UiO-66 was studied by an in situ DRIFTS study.

Three metal–organic framework isomers of different pore sizes for selective CO2 adsorption and isomerization studies

2020 ◽  
Vol 49 (17) ◽  
pp. 5618-5624
Author(s):  
Rui Zhang ◽  
Ju-Hua Huang ◽  
De-Xian Meng ◽  
Fa-Yuan Ge ◽  
Li-Fei Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Selectivity ◽  
Co2 Adsorption ◽  
Metal Organic Framework ◽  
Pore Sizes ◽  
Metal Organic ◽  
Organic Framework

Three MOF isomers including framework-catenation and framework-topological isomers were synthesized for adsorbing carbon dioxide with high selectivity.

scholarly journals Synthesis of FeCo-MIL-88B and Investigate Its Potential for CO2 Capture

2019 ◽  
Vol 35 (1) ◽  
Author(s):  
Le Minh Cam ◽  
Le Van Khu ◽  
Nguyen Thi Thu Ha ◽  
Nguyen Ngoc Ha
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Mesoporous Materials ◽  
Co2 Capture ◽  
Carbon Capture ◽  
Co2 Adsorption ◽  
Carbon Dioxide Capture ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

Cobalt dopping Fe-MIL-88B were successfully synthesized -in solvothermal procedure using DMF as solvent and with/without NaOH. The samples were characterized using SEM, BET and TGA techniques. The partly substitution of Fe by Co does not change the octahedral shape of their parent Fe-MIL-88B. Crystallizations conducted in NaOH medium, however, results in rod like with 2-end octahedral shape crystals. The BET specific surface area is 139cm2/g. The TGA data indicated that the presence of Co resulted in an increase in thermal stability of synthesized samples compared to parent Fe-MIL-88B. The CO2 adsorption isotherms in Fe-MIL-88B-Co samples were measured volumetrically at five temperatures:278K, 288K, 298K, 308K, 318K. The obtained results showed that Fe-MIL-88B-Co is a potential adsorbent with a maximum adsortption capacity of 1.2312 mmol/g (at T= 278K). The sample synthesized in alkali medium exhibited a better adsorbent for CO2 storage. Keywords MIL, adsorption, CO2 References [1] S. Chu, Carbon Capture and Sequestration, Science325(2009)1599 [2] R.S. Haszeldine,Carbon Capture and Storage: How Green Can Black Be?, Science325(2009) 1647[3] D.M. D’Alessandro, B. Smit, J.R. Long,Carbon Dioxide Capture: Prospects for New Materials, Angewandte Chemie International Edition. 49(2010) 6058[4] S. Bai, J. Liu, J. Gao, Q. Yang Can Li,Hydrolysis controlled synthesis of amine-functionalized hollow ethane–silica nanospheres as adsorbents for CO2 capture, Microporous and Mesoporous Materials151(2012) 474[5] K. Sumida, D.L. Rogow, J.A. Mason, T.M. McDonald, E.D. Bloch, Z.R. Herm, T.H. Bae, J.R.[6] Long,Carbon Dioxide Capture in Metal–Organic Frameworks, Chemical Reviews, 112(2012) 724[7] J.D. Carruthers, M.A. Petruska, E.A. Sturm, S.M. Wilson,Molecular sieve carbons for CO2 capture, Microporous and Mesoporous Materials,154 (2012) 62[8] X. Yan, L. Zhang, Y. Zhang, K. Qiao, Z. Yan, S. Komarneni,Amine-modified mesocellular silica foams for CO2 capture, Chemical Engineering Journal,168 (2011), 918[9] A. Zukal, C.O. Arean, M.R. Delgado, P. Nachtigall, A. Pulido, J. Mayerova, J. Cˇejka,Combined volumetric, infrared spectroscopic and theoretical investigation of CO2 adsorption on Na-A zeolite,Microporous and Mesoporous Materials 146 (2011) 97[10] S. Keskin, T.M. van Heest, D.S. Sholl, Can Metal–Organic Framework Materials Play a Useful Role in Large‐Scale Carbon Dioxide Separations?, ChemSusChem3 (2010) 879[11] T.M. McDonald, W.R. Lee, J.A. Mason, B.M. Wiers, C.S. Hong, J.R. Long, Capture of Carbon Dioxide from Air and Flue Gas in the Alkylamine-Appended Metal–Organic Framework mmen-Mg2(dobpdc), Journal of the American Chemical Society134 (2012) 7056[12] X. Yan, S. Komarneni, Z. Zhang, Z. Yan(2014),Extremely enhanced CO2 uptake by HKUST-1 metal–organic framework via a simple chemical treatment, Microporous and Mesoporous Materials183 (2014) 69–73[13] Gia-Thanh Vuong, Minh-Hao Pham and Trong-On Do*, Direct synthesis and mechanism of the formation of mixed metal Fe2Ni-MIL-88B†, CrystEngComm, DOI: 10.1039/c3ce41453a[14] Lê Văn Khu, Nguyễn Quốc Anh, Nguyễn Ngọc Hà, Lê Minh Cầm, Tổng hợp, đặc trưng và khảo sát khả năng hấp phụ CO2 của Fe-MIL-88B, Tạp chí xúc tác và hấp phụ 4 (1) (2015) 52[15] K. S. W. Sing, D. H. Everett, R. A. W. Hau et.al, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity, Pure and Applied Chemistry 57 (1985) 603

Benign Synthesis of Metal-Organic Framework (MIL-101-Cr) and Evaluation of Carbon-dioxide Adsorption Behaviour Employing Adsorption Isotherm Models

2021 ◽  
Vol 19 ◽  
Author(s):  
Ayushi Singh ◽  
Sibnath Kayal
Keyword(s):  
Carbon Dioxide ◽  
Co2 Adsorption ◽  
Carbon Dioxide Capture ◽  
Metal Organic Framework ◽  
Synthesis Method ◽  
Diffraction Method ◽  
Sorption Behaviour ◽  
Benign Synthesis ◽  
Metal Organic ◽  
Organic Framework

Background: In today’s world, rising temperature due to global warming is caused by higher concentration of carbon dioxide (CO2) emissions in the atmosphere. Metal-Organic Framework (MOF) materials have the potential to be used in carbon dioxide capture and utilization technology. Objective: The purpose of this work is to prepare metal-organic framework materials by a benign synthesis method using water as the solvent, followed by the characterization and property evaluation for CO2 adsorption study. Methods: MIL-101-Cr metal-organic framework and its derivatives with alkali ion dopants were prepared by benign hydrothermal synthesis route, which were characterized by powder X-ray diffraction method. The adsorption isotherms of CO2 for MIL-101-Cr and its derivatives were studied to comprehend the influence of alkali dopants on CO2 sorption behaviour. The equilibrium uptakes of CO2 were further evaluated by fitting the isotherms with Langmuir, Toth and Dubinin – Astakohv adsorption models to determine the adsorption parameters. Results: The crystalline structural integrity of MIL-101-Cr is not affected by doping with alkali ions. The isosteric heat of CO2 adsorption is diminished with an increase in alkali dopant size, while the induced surface structural heterogeneity increases with increasing alkali dopant size. Conclusion: The equilibrium and thermodynamic parameters calculated from this study are useful for applications in carbon dioxide capture and utilization technology.

scholarly journals Efficient Adsorption of Pb(II) from Aqueous Solutions by Metal Organic Framework (Zn-BDC) Coated Magnetic Montmorillonite

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1383 ◽  
Author(s):  
Jian Shen ◽  
Nan Wang ◽  
Yang Wang ◽  
Di Yu ◽  
Xiao–kun Ouyang
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Mechanism ◽  
In Situ Polymerization ◽  
Metal Organic Framework ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Metal Organic ◽  
Good Potential ◽  
Organic Framework

Composite adsorption materials combine the advantages of various adsorptive materials and compensate for the defects of single adsorbents. Magnetic montmorillonite (MMMT) shows good adsorption properties for Pb(II). In order to further improve the adsorption properties of MMMT, in this work, Zn-BDC, a kind of metal–organic framework (MOF), was modified onto the surface of MMMT by in situ polymerization. The composite material MMMT@Zn-BDC was characterized by Zetasizer, SEM, TEM, FTIR, XRD, VSM, and XPS. The influence of adsorption conditions on the adsorption capacity of MMMT@Zn-BDC for Pb(II) was examined, including the adsorbent dosage, pH of Pb(II) solution, initial concentration of Pb(II), and the temperature and adsorption time. Also, the adsorption mechanism was studied. The results of this study show that MMMT@Zn-BDC adsorbs Pb(II) via chemisorption. In addition, MMMT@Zn-BDC exhibits good potential for adsorbing Pb(II), including its high adsorption capacity (724.64 mg/g) and good recyclability.

scholarly journals Backbonding contributions to small molecule chemisorption in a metal–organic framework with open copper(i) centers

2021 ◽  
Author(s):  
Gregory M. Su ◽  
Han Wang ◽  
Brandon R. Barnett ◽  
Jeffrey R. Long ◽  
David Prendergast ◽  
...  
Keyword(s):  
Fine Structure ◽  
Small Molecule ◽  
Metal Organic Framework ◽  
X Ray ◽  
Metal Site ◽  
Absorption Fine ◽  
Metal Organic ◽  
X Ray Absorption ◽  
Organic Framework

In situ near edge X-ray absorption fine structure spectroscopy directly probes unoccupied states associated with backbonding interactions between the open metal site in a metal–organic framework and various small molecule guests.

scholarly journals Selective capture of carbon dioxide from hydrocarbons using a metal-organic framework

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Omid T. Qazvini ◽  
Ravichandar Babarao ◽  
Shane G. Telfer
Keyword(s):  
Carbon Dioxide ◽  
Density Functional ◽  
Metal Organic Framework ◽  
Density Functional Theory Calculations ◽  
Time Lags ◽  
X Ray Crystallography ◽  
Metal Organic ◽  
Adsorption Of Co ◽  
Short Time ◽  
Organic Framework

AbstractEfficient and sustainable methods for carbon dioxide capture are highly sought after. Mature technologies involve chemical reactions that absorb CO2, but they have many drawbacks. Energy-efficient alternatives may be realised by porous physisorbents with void spaces that are complementary in size and electrostatic potential to molecular CO2. Here, we present a robust, recyclable and inexpensive adsorbent termed MUF-16. This metal-organic framework captures CO2 with a high affinity in its one-dimensional channels, as determined by adsorption isotherms, X-ray crystallography and density-functional theory calculations. Its low affinity for other competing gases delivers high selectivity for the adsorption of CO2 over methane, acetylene, ethylene, ethane, propylene and propane. For equimolar mixtures of CO2/CH4 and CO2/C2H2, the selectivity is 6690 and 510, respectively. Breakthrough gas separations under dynamic conditions benefit from short time lags in the elution of the weakly-adsorbed component to deliver high-purity hydrocarbon products, including pure methane and acetylene.

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