An ultra-permeable hybrid Mg-MOF-74-Melamine sponge composite for fast dynamic gas separation

Sharma, Ravi; Sürmeli, Dila; Assche, Tom Van; Segato, Tiriana; Delplancke, Marie-Paule; Baron, Gino V.; Denayer, Joeri

doi:10.1016/j.micromeso.2022.112146

Cited by 4 publications

(6 citation statements)

References 53 publications

(72 reference statements)

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“…Remarkably, as the sponge underwent successive coatings (as depicted in Figure 2a–d), a discernible increase in the deposition of material was observed, particularly at the junctures where different fibers interconnect (skeleton joints). [ 33 ] Following each coating iteration, the sponges' dry mass was recorded (Table S2, Supporting Information). This was crucial for quantifying the final amount of Ni‐MOF‐74 incorporated into the sponge structure to determine the CO 2 capacity, expressed in mmol/g ads in the subsequent dynamic experiments.…”

Section: Resultsmentioning

confidence: 99%

“…Ni and Fe were also evident, distributed across the whole sponge network, albeit with a heightened concentration observed at the skeleton joints. [ 33 ] Larger particles, situated between the fibers, were identified as agglomerates predominantly composed of Ni and O, with a minor presence of Fe.…”

Section: Resultsmentioning

confidence: 99%

“…[29][30][31][32] In our recent work, a structured composite (Mg-MOF-74@MS) comprised of a microporous metal-organic framework (Mg-MOF-74) and a macroporous 3D hierarchical skeleton sponge (melamine sponge) was presented for fast dynamic gas separation applications. [33] A melamine sponge is a 3D porous material with very high porosity (> 99%), low density, good thermal stability, and can be obtained at low cost. [34] Additionally, it offers the advantage of good mass transfer properties and compressibility, [35] which from an engineering standpoint offers additional degrees of freedom in the design of separation bed units compared to other rigid forms and structures.…”

Section: Introductionmentioning

confidence: 99%

“…[ 38,39 ] This was also recently showcased with the structured composite, Mg‐MOF‐74@MS, obtained through dip coating, in dynamic gas separation experiments. [ 33 ] The structured form exhibited significantly higher CO 2 adsorption capacity per unit volume (0.40 mmol CO 2 cm −3 ) compared to the pellet form (0.18 mmol CO 2 cm −3 ) and in addition, an enhancement in pressure drop and mass transfer was observed.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Desorption Performance of a Compressible Hybrid Structured Adsorbent via Localized Magnetic Induction Heating

Schoukens,

Sharma,

Laha

et al. 2024

Adv Materials Inter

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Structured adsorbents have gained significant importance in gas separation applications due to their ability to fine‐tune mass and heat transfer and lower pressure drop across the bed. This study presents a ferromagnetic compressible hybrid structured adsorbent, allowing regeneration via magnetic induction heating. A compressible melamine sponge is coated with the CO2‐selective Ni‐MOF‐74 adsorbent and Fe3O4 as a ferromagnetic susceptor, capable of dissipating heat instantaneously in an alternating electromagnetic field. Taking advantage of these properties, the potential of rapid CO2 capture and thermal regeneration via magnetic induction swing adsorption is investigated. The successful incorporation of both ingredients on the melamine sponge is confirmed via SEM‐EDX and XRD analysis. Breakthrough experiments with a CO2/CH4‐mixture are performed. The selective property of Ni‐MOF‐74 toward CO2 is retained, with the composite showing a capacity of 1.89 mmol CO2/g. The compressible nature of the melamine sponge allowed for an improvement of 79% in the volumetric capacity of the adsorbent bed and a higher heating rate. In regard to regeneration, within 1 min of subjecting the structured composite to the alternating magnetic field, an efficient desorption (>90%) of CO2 is achieved. Overall, a ferromagnetic compressible hybrid structured adsorbent is presented for fast cyclic gas‐phase separation processes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancing Desorption Performance of a Compressible Hybrid Structured Adsorbent via Localized Magnetic Induction Heating

Schoukens,

Sharma,

Laha

et al. 2024

Adv Materials Inter

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“…As a research hotspot in the field of materials, metal–organic frameworks (MOFs) have promising application prospects in many fields, for instance energy storage, catalysis, gas separation, electronic devices, sensors, and drug delivery . With the advantages of higher porosity, more active sites, and various organic functional groups, MOFs are gradually used to remove hazardous pollutants and heavy-metal ions. − Yuan et al removed Cr(VI) from aqueous solutions by modifying the bimetallic MOF-derived carbon material Cu@MIL-53(Fe) .…”

Section: Introductionmentioning

confidence: 99%

Design of Zr-MOFs by Introducing Multiple Ligands for Efficient and Selective Capturing of Pb(II) from Aqueous Solutions

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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The existence of lead ions seriously affects the quality of many metal products in metallurgical enterprises. Currently, the various methods of lead-ion removal tried by researchers will affect valuable metals in the removal process, thus resulting in low economic efficiency. In this study, a novel metal–organic framework adsorbent (UiO-FHD) which efficiently and selectively captures lead ions is developed by introducing multiple ligands. The maximum adsorption capacity of lead ions is 433.15 mg/g at pH 5. The adsorption process accords with the pseudo-second-order kinetic and the Langmuir isotherm models at room temperature. Thermodynamic experiments indicate that the removal of Pb(II) is facilitated by appropriate temperature reduction. The performance tests indicate that UiO-FHD maintains a high removal rate of 90.35% for Pb(II) after four consecutive adsorption–desorption cycles. The distribution coefficient of lead ions (26.7 L/g) shows that UiO-FHD has excellent selective adsorption for lead ions. It is revealed that the chelation of the sulfhydryl groups and the electrostatic interaction of the hydroxyl groups are the dominant factors to improve the removal rate of Pb(II) by density functional theory calculations. This study clarifies the value of self-designed novel organic ligands in metal–organic framework materials that selectively capture heavy-metal ions.

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High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

Born,

Denayer,

Van Assche

2024

Chemical Engineering Journal

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An ultra-permeable hybrid Mg-MOF-74-Melamine sponge composite for fast dynamic gas separation

Cited by 4 publications

References 53 publications

Enhancing Desorption Performance of a Compressible Hybrid Structured Adsorbent via Localized Magnetic Induction Heating

Enhancing Desorption Performance of a Compressible Hybrid Structured Adsorbent via Localized Magnetic Induction Heating

Design of Zr-MOFs by Introducing Multiple Ligands for Efficient and Selective Capturing of Pb(II) from Aqueous Solutions

High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

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