Insights into the water adsorption mechanism in the chemically stable zirconium-based MOF DUT-67 – a prospective material for adsorption-driven heat transformations

Bon, Volodymyr; Senkovska, Irena; Evans, Jack D.; Wöllner, Michelle; Hölzel, Markus; Kaskel, Stefan

doi:10.1039/c9ta00825j

Cited by 67 publications

(46 citation statements)

References 58 publications

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“…Moreover, water is an environmental-friendly natural refrigerant, non-flammable, abundant, cost-free, and has substantial latent heat of evaporation (40.7 kJ mol −1 ) 11,14 . The use of water as working fluid in AHT devices has thus attracted tremendous interest in recent years 4,[9][10][11][14][15][16][17][18][19][20][21][22][23][24] . AHT system typically operates under a full cycle of water adsorption/desorption ( Supplementary Fig.…”

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confidence: 99%

“…The small-pore aluminophosphate AlPO-LTA (or AlPO-42) has recently been reported as a promising candidate to fulfill most of the requirements; however, its very limited stability is still a severe limitation for its potential use 16 . In this context, the metal-organic frameworks (MOFs) have been envisaged as next-generation water adsorbent, probably the most promising prospects to promote this family of materials at the market 4,11,14,15,17,18,[20][21][22][23][28][29][30][31][32][33][34] . Since the pioneer works reported on the energy-efficient mesoporous metal(III) poly-carboxylates MIL-100 and MIL-101 [35][36][37][38] , Al-MOFs have received much attention owing to their attractive performances in terms of high working capacity, low regeneration temperature below 80°C, and durability in multicycle adsorption-desorption experiments combined with the use of cheap (e.g., isophthalic acid for CAU-10) 17 or ecofriendly biomass-derived organic linkers (e.g., fumaric acid for MIL-53-FA and 2,5-furandicarboxylic acid for MIL-160) 15,18,30 , low toxicity and abundance of Al precursor.…”

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confidence: 99%

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Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations

et al. 2020

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Adsorption-driven heat transfer technology using water as working fluid is a promising eco-friendly strategy to address the exponential increase of global energy demands for cooling and heating purposes. Here we present the water sorption properties of a porous aluminum carboxylate metal-organic framework, [Al(OH)(C6H3NO4)]·nH2O, KMF-1, discovered by a joint computational predictive and experimental approaches, which exhibits step-like sorption isotherms, record volumetric working capacity (0.36 mL mL−1) and specific energy capacity (263 kWh m−3) under cooling working conditions, very high coefficient of performances of 0.75 (cooling) and 1.74 (heating) together with low driving temperature below 70 °C which allows the exploitation of solar heat, high cycling stability and remarkable heat storage capacity (348 kWh m−3). This level of performances makes this porous material as a unique and ideal multi-purpose water adsorbent to tackle the challenges of thermal energy storage and its further efficient exploitation for both cooling and heating applications.

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Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations

et al. 2020

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“…The pseudo-first-order kinetics model is a widely used monolayer adsorption model. The equilibrium adsorption data of acid chrome blue K on MOF235 was further evaluated through Langmuir and Freundlich isotherm equations [36,37]. The Langmuir isotherm is valid for monolayer adsorption onto a surface containing a finite number of identical adsorption sites [29].…”

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confidence: 99%

An Effective Microwave-Assisted Synthesis of MOF235 with Excellent Adsorption of Acid Chrome Blue K

Huang

et al. 2019

Journal of Nanomaterials

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An efficient, rapid, and fast kinetics of the metal-organic framework MOF235 was successfully prepared by microwave-assisted thermolysis strategy. Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption isotherm, and scanning electron microscopy (SEM) were used to characterize the samples. Experimental results revealed the suitability of MOF235 for use as an adsorbent for acid chrome blue K. The maximum adsorption capacity of acid chrome blue K onto MOF235 can reach to 591.79 mg g-1 at 293 K. The sorption behavior fitted to the pseudo-second-order kinetic model and the Langmuir isotherm. Adsorption of acid chrome blue K is a spontaneous and endothermic process. Therefore, the as-prepared MOF235 displays a great potential for environmental purification.

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“…After a decade focused on fundamental synthetic and structural aspects, the chemistry of Metal-Organic Frameworks (MOFs) is rapidly moving towards industrial application and large-scale commercialization. Zirconium based MOFs are today considered benchmark compounds for their high stability in different media, low cost and for their high structural versatility which allows to employ them in a vast number of strategic applications in the field of catalysis [1][2][3][4] , gas 5 and solvent sorption 6,7 , separation 8,9 , proton conductivity 10 and for biomedical purposes. 11,12 The archetypal Zr-MOF is the UiO-66 phase of general formula Zr 6 O 4 (OH) 4 (BDC) 6 •nDMF (H 2 -BDC = benzene dicarboxylic acid) first synthesized in 2008 by Lillerud et al 13 From its discovery to date, the number of papers citing UiO-66 overcomes 1500.…”

Section: Introductionmentioning

confidence: 99%

Extensive Screening of Green Solvents for Safe and Sustainable UiO-66 Synthesis

Venturi¹,

Campana²,

Marmottini³

et al. 2020

Preprint

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<p>Zirconium based Metal-Organic Framework UiO-66 is to date considered one of the benchmark compound among stable MOFs and it has attracted a huge attention for its employment in many strategic applications. Large scale production of UiO-66 for industrial purposes requires the use of safe and green solvents, fulfilling the green chemistry principles and able to replace the use of <i>N,N</i>-Dimethyl-Formamide (DMF), which, despite its toxicity, is still considered the most efficient solvent for obtaining UiO-66 of high quality. Herein we report on a survey of about 40 different solvents with different polarity, boiling point and acidity, used for the laboratory scale synthesis of high quality UiO-66 crystals. The solvents were chosen according the European REACH Regulation 1907/2006 among those having low cost, low toxicity and fully biodegradable. Concerning MOF synthesis, the relevant parameters chosen for establishing the quality of the results obtained are the degree are the crystallinity, microporosity and specific surface area, yield and solvent recyclability. Taking into account also the chemical physical properties of all the solvents, a color code was assigned in order to give a final green assessment for the UiO-66 synthesis. Defectivity of the obtained products, the use of acidic modulators and the use of alternative Zr-salts have been also taken into consideration. Preliminary results lead to conclude that GVL (γ-valerolactone) is among the most promising solvents for replacing DMF in UiO-66 MOF synthesis. </p>

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Insights into the water adsorption mechanism in the chemically stable zirconium-based MOF DUT-67 – a prospective material for adsorption-driven heat transformations

Abstract: The mechanism of water adsorption in the chemically and thermally stable DUT-67(Zr) framework was studied by neutron powder diffraction and optical calorimetry.

Cited by 67 publications

References 58 publications

Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations

Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations

An Effective Microwave-Assisted Synthesis of MOF235 with Excellent Adsorption of Acid Chrome Blue K

Extensive Screening of Green Solvents for Safe and Sustainable UiO-66 Synthesis

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