Metal–organic frameworks with high working capacities and cyclic hydrothermal stabilities for fresh water production

Kim, Seung-Ik; Tae-Ung, Yoon; Kim, Minbum; Lee, Seung-Joon; Hwang, Young Kyu; Chang, Jong‐San; Kim, Hyun-Jong; Lee, Ho-Nyun; Lee, U‐Hwang; Bae, Youn‐Sang

doi:10.1016/j.cej.2015.10.098

Cited by 70 publications

(43 citation statements)

References 52 publications

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“…With the exception of MIL-127(Fe), the water-sorption properties of these MOFs were previously reported, [3,12,17,[30][31][32][33][34][35] with interesting results in terms of water-sorptionc apacity and lowtemperature regeneration. Moreover, the hydrophilic character of someM OFs [MIL-125(Ti)-NH 2 ,U iO-66(Zr)-NH 2 ]c ould be enhanced throught he introduction of hydrophilic amino groups on the organic spacer.H erein, we aimed to comparet hese MOFs and zeolite 13X [29] (see Table 1) as potential physicala dsorbentm aterials fore nergy-storage applications (the full characterization of the MOFs is given in the Supporting Information, Figures S1-S23).W ef irst measuredt heir cycling loading lifts using the typical conditions of as easonal energy-storage device.…”

Section: Resultsmentioning

confidence: 97%

Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal–Organic Framework MIL‐160(Al)

et al. 2017

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The energy-storage capacities of a series of water-stable porous metal-organic frameworks, based on high-valence metal cations (Al , Fe , Cr , Ti , Zr ) and polycarboxylate linkers, were evaluated under the typical conditions of seasonal energy-storage devices. The results showed that the microporous hydrophilic Al-dicarboxylate MIL-160(Al) exhibited one of the best performances. To assess the properties of this material for space-heating applications on a laboratory pilot scale with an open reactor, a new synthetic route involving safer, greener conditions was developed. This led to the production of MIL-160(Al) on a 400 g scale, before the material was shaped into pellets through a wet-granulation method. The material exhibited a very high energy-storage capacity for a physical-sorption material (343 Wh kg ), which is in full agreement with the predicted value.

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Section: Resultsmentioning

confidence: 97%

Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal–Organic Framework MIL‐160(Al)

et al. 2017

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“…A series of isostructural UiO-66(Zr) with different functional groups such as -NH2, -OH, and -(OH)2 were employed to functionalize the BDC linker to investigate the hydrophilic effect of the groups. [74] All the functionalized UiO-66(Zr) materials showed enhanced water adsorption in the low P/P0 relative pressure due to the augmented interactions with water molecules, leading to isotherms that approached the type I shape (Fig.11a). However, water adsorption of the functionalized UiO-66(Zr) materials in the high P/P0 decreased significantly compared with the original UiO-66(Zr) as a consequence of the decreased surface area due to the insertion of bulky groups in the pores.…”

Section: Functionalized Mofs Bearing Ligand Functional Groupmentioning

confidence: 99%

Tunable Metal-Organic Frameworks for Heat Transformation Applications

Chaemchuen

Xiao

Klomkliang

et al. 2018

Preprint

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Metal-Organic Frameworks (MOFs) are a subclass of porous materials that have unique properties such as varieties of structures from different metals and organic linkers, tunable porosity from a structure or framework design, etc. Moreover, modification/functionalization of the material structure could optimize the material properties and demonstrate high potential for a selected application. MOF materials exhibit exceptional properties and make these materials widely applicable including in energy storage and heat transformation applications. This review aims to give a broad overview of MOFs and their development as adsorbent materials having the potential for heat transformation applications. We summarize current investigations, developments, and possibilities of metal-organic frameworks (MOFs) especially the tuning of the porosity and hydrophobic/hydrophilic design required for this specific application. These materials applied as adsorbent are promising in the thermal driven adsorption for heat transformation using water as working fluid and related application.

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“…However, in order to further improve AHPs performance, the adsorption ability of MIL‐100(Fe) at low RH (10%‐30%) still needs to be increased. The modification of MOFs usually introduces the hydrophilic groups such as nitro (NO 2 ), amino (NH 2 ) and hydroxyl (OH) on the organic ligands 21,25 . However, the complicated modification process seems to limit its use.…”

Section: Introductionmentioning

confidence: 99%

“…However, the complicated modification process seems to limit its use. Only a few MOFs, such as MIL‐101(Cr), 21,26 MIL‐125 27 and UIO‐66, 25 were reported.…”

Section: Introductionmentioning

confidence: 99%

Investigation on water vapor adsorption performance of LiCl@MIL‐100(Fe) composite adsorbent for adsorption heat pumps

et al. 2020

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MIL-100(Fe) with good hydrothermal stability and high hydrophilicity is considered to be a potential adsorbent for adsorption heat pumps (AHPs). However, its water vapor adsorption performance at low relative humidity needs to be improved. In this study, composite adsorbent LiCl@MIL-100(Fe) was synthesized by impregnating LiCl aqueous solution in MIL-100(Fe). The effects of the LiCl loading in the composite on the crystal structure, morphology, composition, pore structure as well as the vapor adsorption/desorption performance of the composites were carefully studied. The results showed that on the premise of ensuring no leakage, the LiCl loading in the composite was up to 32.9 wt%. At 20% relative humidity (RH), the saturated adsorption ratio of the composite (0.260 g/g) was higher than that of original MIL-100(Fe) (0.054 g/g). Meanwhile, the water adsorption rate of the new composite adsorbent was faster than pristine MIL-100(Fe). Moreover, after 50 cycles of vapor adsorption/desorption, the composite adsorbent showed a satisfactory stability. All these indicate that the new LiCl@MIL-100 (Fe) composite adsorbent will be a prospective candidate for high-efficiency AHPs. K E Y W O R D S adsorption heat pumps, composite adsorbent, LiCl, MIL-100(Fe), synergistic effect, water vapor adsorption

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Metal–organic frameworks with high working capacities and cyclic hydrothermal stabilities for fresh water production

Cited by 70 publications

References 52 publications

Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal–Organic Framework MIL‐160(Al)

Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal–Organic Framework MIL‐160(Al)

Tunable Metal-Organic Frameworks for Heat Transformation Applications

Investigation on water vapor adsorption performance of LiCl@MIL‐100(Fe) composite adsorbent for adsorption heat pumps

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