Dicationic liquid containing alkenyl modified CuBTC improves the performance of the composites: Increasing the CO2 adsorption effect

Pan, Rong‐Kai; Guo, Yanni; Tang, Yining; Dong, Wei; Liu, Mengli; He, Deliang

doi:10.1016/j.cej.2021.132127

Cited by 16 publications

(10 citation statements)

References 56 publications

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“…Nonetheless, the CO 2 sorption isotherms and XRD patterns of [VMCA]@Cu‐BTC(9.7)‐2d and [VMCA]@Cu‐BTC(9.7)‐3d were almost same to those of [VMCA]@Cu‐BTC(9.7)‐1d, revealing that [VMCA]@Cu‐BTC(9.7) possessed certain stability when exposed in the air beyond 1 day. The typical CO 2 capture process from flue gas application will be carried out at higher temperatures 36 . Thus, the CO 2 adsorption isotherms of the Cu‐BTC and [VMCA]@Cu‐BTC(9.7) were measured at a higher temperature of 310 K. These two isotherms can be also well described by the L model.…”

Section: Resultsmentioning

confidence: 99%

“…The typical CO 2 capture process from flue gas application will be carried out at higher temperatures. 36 Thus, the CO 2 adsorption isotherms of the Cu-BTC and [VMCA]@Cu-BTC(9.7) were measured at a higher temperature of 310 K. These two isotherms can be also well described by the L model.…”

Section: Gas Sorptionmentioning

confidence: 99%

“…In this work, we report a facile approach toward the confining of organic cations into the microchannel of Cu‐BTC. Cu‐BTC was first synthesized by Chui et al 34 and great efforts have been dedicated to improving its adsorption performance through postmodifications 16–18,35,36 . Several ILs have been impregnated on Cu‐BTC to prepare IL/MOF composites for gas sorption 37–39 .…”

Section: Introductionmentioning

confidence: 99%

“…Cu-BTC was first synthesized by Chui et al 34 and great efforts have been dedicated to improving its adsorption performance through postmodifications. [16][17][18]35,36 Several ILs have been impregnated on Cu-BTC to prepare IL/MOF composites for gas sorption. [37][38][39] S1).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture

Wang,

Meng,

Zhou

et al. 2023

AIChE Journal

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High tunability of both ionic liquids (ILs) and metal organic frameworks (MOFs) enables great opportunity in the rational designation of IL/MOF composites for physical adsorption and separation. Traditionally, cations and anions of ILs as an entirety are combined with MOFs either inside or outside the microchannels. Herein, organic cations of ILs were confined into Cu‐BTC and the champion adsorbent is obtained by using 1‐propionic acid‐3‐vinylimidazole bromide as the precursor with a moderate loading amount, exhibiting higher CO2 uptakes of 8/5 mmol g−1 than Cu‐BTC (6.0/3.5 mmol g−1) at 273/298 K and 100 kPa, associating with significantly improved CO2/N2(CH4) selectivities. The organic cations are interacted with two adjacent CuII2(CRO2)2 paddle wheel units of Cu‐BTC, expanding the CuO bond to strengthen the CO2 affinity of open Cu sites and also serving as an additive CO2 adsorptive site. The promotion of CO2 capture ability is further reflected in the dynamic column breakthrough experiment.

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Section: Resultsmentioning

confidence: 99%

Section: Gas Sorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture

Wang,

Meng,

Zhou

et al. 2023

AIChE Journal

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“…HKUST-1 (also called as Cu-BTC), one of the most typical MOFs, has great potential in the adsorption and separation of CO 2 because of the unsaturated metal centers in the structure. − However, high-quality Cu-BTC can only be used in environments without moisture. Otherwise, the relative weak Cu–O coordination bonds are prone to the attack of water molecules, resulting in irreversible structural degradation in only a few hours. − Xue et al investigated the hydrolytic breakdown mechanism of the Cu–Cu metal node in HKUST-1 with the presence of water molecules. They found that the water molecules can cause the initial Cu–O bond to break at the Cu–Cu node, leading to the replacement of the Cu–O ligand coordination bonds with the Cu–O water bonds and thus the hydrolysis of the HKUST-1 structure .…”

Section: Introductionmentioning

confidence: 99%

Facile in Situ Polymer Functionalization Approach for Constructing Water-Resistant Metal–Organic Frameworks

Guo

Qiao

et al. 2023

Ind. Eng. Chem. Res.

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Metal–organic frameworks (MOFs) have been widely investigated for their use in separation, such as gas adsorption or biotechnology. However, numerous MOFs are unstable in aqueous environment or humid conditions, significantly hindering their practical application. While current methods for enhancing MOF water stability can largely decrease the pore structural parameters, herein, we proposed a strategy of in situ trace polymer functionalization for enhancing the MOF stability and demonstrated that the water stability of four common MOFs can be enhanced greatly by incorporating hydrophobic PSfCOOH molecules into the framework through a one-step synthesis. A series of investigations into the local chemical structure and bonding environment suggest that the enhanced water stability arises from the construction of hydrophobic microenvironments and the steric hindrance around the metal sites. The prepared Cu-BTC-PSfCOOH remained intact after being immersed in water for even 10 days, preserving 90% of its original pore structural parameter, such as Brunauer–Emmett–Teller (BET) surface areas. Moreover, 88% of the initial BET surface areas can be maintained after one-day immersion in 6 M HCl solution. The strategy is also demonstrated to be efficient in enhancing the water stability of three other typical MOFs, showing good universality in constructing water-resistant MOFs.

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Metal confined in metal‐organic framework‐based mixed matrix membranes for efficient butadiene recognition separation

Cen

Sun

et al. 2023

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The efficient separation of butadiene (1,3‐C4H6) from C4 hydrocarbons is a critical step in petrochemical processes. However, the traditional cryogenic distillation suffers from energy‐intensity and serious environmental stress, necessitating the development of alternative technologies for efficient 1,3‐C4H6 separation. Herein, a 1,3‐C4H6 recognition mixed matrix membrane is reported via incorporating metal copper encapsulated a metal‐organic framework (CuBTC@Cu) into elastic poly(dimethylsiloxane) (PDMS). The resulting CuBTC@Cu/PDMS membrane can efficient separate 1,3‐C4H6 from various C4 hydrocarbons including 1,3‐C4H6/n‐C4H8, 1,3‐C4H6/iso‐C4H8, 1,3‐C4H6/n‐C4H10 and 1,3‐C4H6/iso‐C4H10, yielding superior selectivity of 5.11, 6.35, 4.78, and 10.30, respectively, with 1,3‐C4H6 permeability of 53240 Barrer. Notably, the appropriate π‐complexation interaction between butadiene molecules and CuBTC@Cu as well as suitable transmission channel size enable the membrane only permeable to 1,3‐C4H6 and block the permeation of other C4 hydrocarbons, showing a unique 1,3‐C4H6 recognition behavior in membrane separation. The concept of affinity‐relying separation combining molecular sieving would open a new direction for designing gas membranes for efficient light hydrocarbon separations.

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Dicationic liquid containing alkenyl modified CuBTC improves the performance of the composites: Increasing the CO2 adsorption effect

Cited by 16 publications

References 56 publications

Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture

Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture

Facile in Situ Polymer Functionalization Approach for Constructing Water-Resistant Metal–Organic Frameworks

Metal confined in metal‐organic framework‐based mixed matrix membranes for efficient butadiene recognition separation

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Dicationic liquid containing alkenyl modified CuBTC improves the performance of the composites: Increasing the CO2 adsorption effect

Cited by 16 publications

References 56 publications

Confining organic cations in metal organic framework allows molecular level regulation of CO2 capture

Confining organic cations in metal organic framework allows molecular level regulation of CO2 capture

Facile in Situ Polymer Functionalization Approach for Constructing Water-Resistant Metal–Organic Frameworks

Metal confined in metal‐organic framework‐based mixed matrix membranes for efficient butadiene recognition separation

Contact Info

Product

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Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture

Confining organic cations in metal organic framework allows molecular level regulation of CO₂ capture