Hybrid Bimetallic Metal–Organic Frameworks: Modulation of the Framework Stability and Ultralarge CO2 Uptake Capacity

2013 ◽  
Vol 52 (19) ◽  
pp. 10869-10876 ◽  
Author(s):  
Xiaokai Song ◽  
Minhak Oh ◽  
Myoung Soo Lah
Keyword(s):  
Metal Organic Frameworks ◽  
Co2 Uptake ◽  
Uptake Capacity ◽  
Metal Organic

Harnessing solvent effects to integrate alkylamine into metal–organic frameworks for exceptionally high CO2 uptake

2019 ◽  
Vol 7 (13) ◽  
pp. 7867-7874 ◽  
Author(s):  
Hao Li ◽  
Kecheng Wang ◽  
Zhigang Hu ◽  
Ying-Pin Chen ◽  
Wolfgang Verdegaal ◽  
...  
Keyword(s):  
Solvent Effects ◽  
Polar Solvent ◽  
Metal Organic Frameworks ◽  
Co2 Uptake ◽  
High Co2 ◽  
Metal Organic ◽  
Loading Amount

Alkylamine modified MOF prepared with a less polar solvent (cyclohexane) has a higher alkylamine loading amount and higher CO2 uptake than when prepared in a more polar solvent (dichloromethane).

Three N–H Functionalized Metal–Organic Frameworks with Selective CO2 Uptake, Dye Capture, and Catalysis

2014 ◽  
Vol 53 (14) ◽  
pp. 7692-7699 ◽  
Author(s):  
Yu Zhu ◽  
Yan-Mei Wang ◽  
Sheng-Yun Zhao ◽  
Pan Liu ◽  
Chao Wei ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Co2 Uptake ◽  
Metal Organic

scholarly journals Elucidating CO2 Chemisorption in Diamine-Appended Metal–Organic Frameworks

2018 ◽  
Author(s):  
Alexander C. Forse ◽  
Phillip J. Milner ◽  
Jung-Hoon Lee ◽  
Halle N. Redfearn ◽  
Julia Oktawiec ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Density Functional ◽  
Molecular Mechanisms ◽  
Metal Organic Frameworks ◽  
Carbamic Acid ◽  
Co2 Uptake ◽  
Functional Theory ◽  
Ammonium Carbamate ◽  
Co2 Chemisorption ◽  
Metal Organic

The widespread deployment of carbon capture and sequestration as a climate change mitigation strategy could be facilitated by the development of more energy-efficient adsorbents. Diamine-appended metal–organic frameworks of the type diamine–M2(dobpdc) (M = Mg, Mn, Fe, Co, Ni, Zn; dobpdc4− = 4,4′-dioxidobiphenyl-3,3′-dicarboxylate) have shown promise for carbon capture applications, although questions remain regarding the molecular mechanisms of CO2 uptake in these materials. Here, we leverage the crystallinity and tunability of this class of frameworks to perform a comprehensive study of CO2 chemisorption. Using multinuclear nuclear magnetic resonance (NMR) spectroscopy experiments and van der Waals-corrected density functional theory (DFT) calculations for thirteen diamine–M2(dobpdc) variants, we demonstrate that the canonical CO2 chemisorption products—ammonium carbamate chains and carbamic acid pairs—can be readily distinguished, and that ammonium carbamate chain formation dominates for diamine–Mg2(dobpdc) materials. In addition, we elucidate a new chemisorption mechanism in the material dmpn Mg2(dobpdc) (dmpn = 2,2-dimethyl-1,3-diaminopropane), which involves formation of a 1:1 mixture of ammonium carbamate and carbamic acid and accounts for the unusual adsorption properties of this material. Finally, we show that the presence of water plays an important role in directing the mechanisms for CO2 uptake in diamine–M2(dobpdc) materials. Overall, our combined NMR and DFT approach enables a thorough depiction and understanding of CO2 adsorption within diamine–M2(dobpdc) compounds, which may aid similar studies in other amine-functionalized adsorbents in the future.

Microporous rod metal–organic frameworks with diverse Zn/Cd–triazolate ribbons as secondary building units for CO2 uptake and selective adsorption of hydrocarbons

2017 ◽  
Vol 46 (3) ◽  
pp. 836-844 ◽  
Author(s):  
Jian-Wei Zhang ◽  
Man-Cheng Hu ◽  
Shu-Ni Li ◽  
Yu-Cheng Jiang ◽  
Quan-Guo Zhai
Keyword(s):  
Selective Adsorption ◽  
Metal Organic Frameworks ◽  
Isosteric Heat ◽  
Heat Of Adsorption ◽  
Co2 Uptake ◽  
Isosteric Heat Of Adsorption ◽  
Secondary Building Units ◽  
Metal Organic

Three rod MOFs exhibiting remarkable CO2 uptake and high CO2 and C2-hydrocarbons over CH4 selectivity, as well as high isosteric heat of adsorption for C2H2.

Significant enhancement of gas uptake capacity and selectivity via the judicious increase of open metal sites and Lewis basic sites within two polyhedron-based metal–organic frameworks

2016 ◽  
Vol 52 (15) ◽  
pp. 3223-3226 ◽  
Author(s):  
Bing Liu ◽  
Shuo Yao ◽  
Chao Shi ◽  
Guanghua Li ◽  
Qisheng Huo ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Frameworks ◽  
High Density ◽  
Significant Enhancement ◽  
Uptake Capacity ◽  
Gas Uptake ◽  
Basic Sites ◽  
Open Metal Sites ◽  
Metal Organic

Two novel PMOFs with a high density of OMSs and LBSs were assembled using the SBB strategy and exhibited a high performance for CO2 capture and separation towards CO2, C2H6 and C3H8 over CH4.

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