Outstanding reversible H<sub>2</sub>S capture by an Al(<scp>iii</scp>)-based MOF

Zárate, J. Antonio; Sánchez-González, Elı́; Jurado‐Vázquez, Tamara; Gutièrrez-Alejandre, Aı̀da; González‐Zamora, Eduardo; Castillo, Iván; Maurin, Guillaume; Ibarra, Ilich A.

doi:10.1039/c8cc09379b

Cited by 78 publications

(61 citation statements)

References 25 publications

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“…Metal-organic frameworks (MOFs) are ac lass of porous, microcrystalline materials that over the last few years have shown potential as adsorbent materials for applications ranging from drug delivery, [1] to gas separation and adsorption. [2] One area where MOFs are of interest is in the removal of toxic industrial chemicals (TICs) such as ammonia and hydrogen sulfide from airstreams, [3,4] and research is currently underway into the possibility of incorporating MOFs into personal protective equipment, such as respirator canisters. [5] One of the main issues regarding the potential use of MOFs in personal protective equipment is the hydrolytic stability of the frameworks (due to exposure to the humidity always present in breathable air).…”

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confidence: 99%

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

et al. 2019

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Metal-organic frameworks (MOFs) are ac lass of porous materials that show promise in the removal of toxic industrial chemicals (TICs) from contaminated airstreams, though their development for this application has so far been hindered by issues of water stability and the wide availability and low cost of traditionally used activated carbons.H ere as eries of three MOF-activated carbon composite materials with different MOF to carbon ratios are prepared by growing STAM-17-OEt crystals inside the commercially available BPL activated carbon. The composite materials displaye xcellent water stability and increased uptake of ammonia gas when compared to unimpregnated carbon. Suchp roperties make these composites very promising in the fields of air purification and personal protective equipment.

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confidence: 99%

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

et al. 2019

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“…Such numbers are comparable with the literature data of CO 2 adsorption by 1b (122 cm 3 •g −1 at 273 K, 46 cm 3 •g −1 at 298 K). Taking into account the crystallographic densities, the corresponding volumetric uptakes for 1se were calculated to be 116 cm 3 •cm −3 (273 K) and 48.5 cm 3 •cm −3 (298 K), which exceeds those for 1b by 15% (101 cm 3 •cm −3 ) at 273 K (see Figure 4) and by 28% (38 cm 3 •cm −3 ) at 298 K, respectively, convincingly confirming a positive effect of the polarizable heteroatom (Se) on the absorption properties of porous materials [38][39][40][41]. Similarly, the isosteric heat of CO 2 adsorption at zero coverage Q st (0) for 1se (19.9 kJ•mol −1 ) is greater than for 1b (19.0 kJ•mol −1 ), indicating stronger binding of CO 2 with the porous framework containing the selenophene heterocycle.…”

Section: Adsorption Measurementsmentioning

confidence: 51%

A Selenophene-Incorporated Metal–Organic Framework for Enhanced CO2 Uptake and Adsorption Selectivity

et al. 2020

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A new metal–organic coordination polymer [Zn2(sedc)2(dabco)] (1se; sedc2− = selepophene-2,5-dicarboxylate; dabco = 1,4-diazabicyclo[2.2.2]octane) was synthesized and characterized by single-crystal X-ray diffraction analysis. This MOF is based on {Zn2(OOCR)4N2} paddle wheels and is isoreticular to the family of [Zn2(bdc)2(dabco)] derivatives (1b; bdc2− = 1,4-benzenedicarboxylate) with pcu topology. The gas adsorption measurements revealed that 1se shows a 15% higher CO2 volumetric uptake at 273 K and 28% higher CO2 uptake at 298 K (both at 1 bar) compared to the prototypic framework 1b. Methane and nitrogen adsorption at 273 K was also investigated, and IAST calculations demonstrated a pronounced increase in CO2/CH4 and CO2/N2 selectivity for 1se, compared with 1b. For example, the selectivity factor for the equimolar CO2/CH4 gas mixture at 1 bar = 15.1 for 1se and 11.9 for 1b. The obtained results show a remarkable effect of the presence of selenium atom on the carbon dioxide affinity in the isoreticular metal–organic frameworks with very similar geometry and porosity.

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“…MOF MIL-53 (Al) TDC [57] was found to be the highest performing adsorbent for H 2 S capture at post-combustion conditions at ambient temperatures, more than Polymers PM 012 @Ui-66@H 2 S-MIPsM [145] and BPP-5 [146] as shown in Table 5. Furthermore, Polymer BPP-5 [146] had better chemical stability and potential for regenerability and reusability.…”

Section: Permeance and Selectivity For Co 2 Of Membranes At Pre-and Pmentioning

confidence: 96%

Adsorbents for Noxious Gas Sequestration: State of the Art

Aimikhe

Eyankware

2019

JSRR

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Adsorbents such as metal-organic frameworks (MOFs), polymers, activated carbon (AC), and membranes are becoming prominent for CO2, SO2, H2S and NH3 capture and in some cases, storage. Using the standard adsorbent properties (SAPs) such as adsorption capacity, selectivity, permeability/permeance, regenerability and reusability, ease of functionability and tunability, thermal and chemical stability, suitable candidates for noxious gas sequestration can be determined. To foster the development and selection of a more efficient adsorbent, proper documentation of adsorbent performance in terms of SAPs is crucial. In this study, a critical review of metal-organic framework (MOF), polymer, activated carbon (AC) and membrane adsorbents was performed. Using the SAPs, an up to date comparative analysis was done to select the best performing adsorbents. The results of the comparative analysis were then used to categorize the adsorbents' suitability for pre-combustion and post-combustion applications. A perspective of future study on adsorbents for noxious gas sequestration was also presented.

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Outstanding reversible H₂S capture by an Al(iii)-based MOF

Abstract: MIL-53(Al)-TDC was demonstrated to be an optimal adsorbent for acidic H2S capture combining an unprecedented uptake at room temperature, excellent cyclability and low-temperature regeneration.

Cited by 78 publications

References 25 publications

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

A Selenophene-Incorporated Metal–Organic Framework for Enhanced CO2 Uptake and Adsorption Selectivity

Adsorbents for Noxious Gas Sequestration: State of the Art

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Outstanding reversible H2S capture by an Al(iii)-based MOF

Abstract: MIL-53(Al)-TDC was demonstrated to be an optimal adsorbent for acidic H2S capture combining an unprecedented uptake at room temperature, excellent cyclability and low-temperature regeneration.

Cited by 78 publications

References 25 publications

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

Metal–Organic Framework‐Activated Carbon Composite Materials for the Removal of Ammonia from Contaminated Airstreams

A Selenophene-Incorporated Metal–Organic Framework for Enhanced CO2 Uptake and Adsorption Selectivity

Adsorbents for Noxious Gas Sequestration: State of the Art

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Outstanding reversible H₂S capture by an Al(iii)-based MOF