Zr-Based Metal–Organic Nanoporous Adsorbents of High Density for Methane Storage

Соловцова, О. В.; Пулин, А. Л.; Меньщиков, И. Е.; Платонова, Н. П.; Knyazeva, M. K.; Chugaev, S. S.; Школин, А. В.; Фомкин, А. А.

doi:10.1134/s2070205120060222

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…The main reflections at 2θ~7, 8, 12, and 25 °on the XRD pattern for the as-prepared ZrBDC (Figure 7, curve 1) coincide with that calculated for UiO-66 [49]. In the previous work [57], the XRD data for ZrBDC powder compacted without any binders under different pressures revealed that the main reflections became less pronounced as the applied compaction pressure increased, indicating a progressive degradation of the ZrBDC-PVA crystalline structure. The comparison of XRD patterns recorded before and after the shaping of the as-prepared ZrBDC powder with PVA and CMC (see Figure 7) enabled us to observe the effects of the binders on the MOF structure upon their compaction at 160 Pa.…”

Section: The Density Of the Shaped Zrbdc-based Adsorbentssupporting

confidence: 79%

“…The Zr-BDC powder was shaped with no binders (ZrBDC-F) and with polymer binders: a 5% PVA aqueous solution (ZrBDC-PVA) and a 1% carboxymethylcellulose sodium salt solution (ZrBDC-CMC). The choice of these binders as optimal was based on the results of the previous study [57]. The MOF:binder mass ratio of the shaped mixture was 1 : 1, which, as shown in [53], allowed one to increase the density and strength of the MOF material with minimal changes in its porous structure (specific surface and micropore volume).…”

Section: Preparation Of the Zrbdc-based Shaped Materialsmentioning

confidence: 99%

“…In the previous studies [28, 57, 58], we tested the conditions for preparing high-density functional materials from Cu-based MOF (CuBTC, where BTC is 1,3,5-benzene tricarboxylic acid) and ZrBDC. The primary purpose of the studies was to develop an optimal technique for fabricating the shaped materials from CuBTC and ZrBDC with reproducible properties.…”

Section: Introductionmentioning

confidence: 99%

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ZrBDC-Based Functional Adsorbents for Small-Scale Methane Storage Systems

Соловцова

Меньщиков

Школин

et al. 2022

Adsorption Science & Technology

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Metal-organic frameworks (MOF), potentially porous coordination structures, are envisioned for adsorption-based natural gas (ANG) storage, including mobile applications. The factors affecting the performance of the ANG system with a zirconium-based MOF with benzene dicarboxylic acid as a linker (ZrBDC) as an adsorbent were considered: textural properties of the adsorbent and thermal effect arising upon adsorption. The high-density ZrBDC-based pellets were prepared by mechanical compaction of the as-synthesized MOF powder at different pressures from 30 to 240 MPa at 298 K without a binder and mixed with polymer binders: polyvinyl alcohol (PVA) and carboxyl methylcellulose (CMC). The structural investigations revealed that the compaction of ZrBDC with PVA under 30 MPa was optimal to produce the ZrBDC-PVA adsorbent with more than a twofold increase in the packing density and the lowest degradation of the porous structure. The specific total and deliverable volumetric methane storage capacities of the ZrBDC-based adsorbents were evaluated from the experimental data on methane adsorption measured up to 10 MPa and within a temperature range from 253 to 333 K. It was measured experimentally that at 253 K, an 100 mL adsorption tank loaded with the ZrBDC-PVA pellets exhibited the deliverable methane storage capacity of 172 m3(NTP)/m3 when the pressure dropped from 10 to 0.1 MPa. The methane adsorption data for the ZrBDC powder and ZrBDC-PVA pellets were used to calculate the important thermodynamic characteristic of the ZrBDC/CH4 adsorption system—the differential molar isosteric heat of adsorption, which was used to evaluate the state thermodynamic functions: entropy, enthalpy, and heat capacity. The initial heats of methane adsorption in powdered ZrBDC evaluated from the experimental adsorption isosteres were found to be ~19.3 kJ/mol, and then these values in the ZrBDC/CH4 system decreased at different rates during adsorption. In contrast, the heat of methane adsorption onto the ZrBDC-PVA pellets increased from 19.4 kJ/mol to a maximum with a magnitude, width, and position depended on temperature, and then it fell. The behaviors of the thermodynamic state functions of the ZrBDC/CH4 adsorption system were interpreted as a variation in the state of adsorbed molecules determined by a ratio of CH4-CH4 and CH4-ZrBDC interactions. The heat of adsorption was used to calculate the temperature changes of the ANG systems loaded with ZrBDC powder and ZrBDC pellets during methane adsorption under adiabatic conditions; the maximum integrated heat of adsorption was found at 273 K. The maximum temperature changes of the ANG system with the ZrBDC materials during the adsorption (charging) process did not exceed 14 K that are much lower than those reported for the systems loaded with activated carbons. The results obtained are of direct relevance for designing the adsorption-based methane storage systems for the automotive industry, developing new gas-power robotics systems and uncrewed aerial vehicles.

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Section: The Density Of the Shaped Zrbdc-based Adsorbentssupporting

confidence: 79%

Section: Preparation Of the Zrbdc-based Shaped Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ZrBDC-Based Functional Adsorbents for Small-Scale Methane Storage Systems

Соловцова

Меньщиков

Школин

et al. 2022

Adsorption Science & Technology

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“…This H3BTB is also a component of metal organic frameworks (MOFs). MOFs are 3D-microporous materials that could be used in gas separation and adsorption processes [ 24 , 25 ]. In recent years, H3BTB has been employed as a linker to create MOFs with incredibly large surface areas, such as MOF-177 (5000 m 2 /g), a hydrogen-absorbing substance with an incredibly high hydrogen storage capacity of 7.5% at 77K.…”

Section: Introductionmentioning

confidence: 99%

Molecular Spectroscopy Evidence of 1,3,5-Tris(4-carboxyphenyl)benzene Binding to DNA: Anticancer Potential along with the Comparative Binding Profile of Intercalation via Modeling Studies

Wani

Zargar

2023

Cells

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One of medicinal chemistry’s top priorities is the discovery of new molecules with anticancer potential. Compounds that interact with DNA are an intriguing family of chemotherapeutic medications used to treat cancer. Studies in this area have uncovered a plethora of potential anticancer medicines, such as groove binding, alkylating, and intercalator compounds. The anticancer activity of DNA intercalators (molecules that intercalate between DNA base pairs) has drawn special interest. The current study investigated the promising anticancer drug 1,3,5-Tris(4-carboxyphenyl)benzene (H3BTB) against breast and cervical cancer cell lines. In addition, 1,3,5-Tris(4-carboxyphenyl)benzene binds to DNA by groove binding. The binding of H3BTB to DNA was found to be significant which unwinds the DNA helix. Considerable electrostatic and non-electrostatic contributions were present in the binding’s free energy. The cytotoxic potential of H3BTB is effectively demonstrated by the computational study outcomes, which include molecular docking and molecular dynamics (MD) simulations. The minor groove binding for the H3BTB–DNA complex is supported by molecular docking research. This study will promote empirical investigation into the synthesis of metallic and non-metallic H3BTB derivatives and their potential use as bioactive molecules for the treatment of cancer.

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“…Zirconium-based metal-organic frameworks (Zr-MOF) have quickly gained a lot of attention in analytical chemistry due to their promising properties, including good selectivity, high productivity, low cost and regenerability, and strong interaction of Zr-OH groups with specific functionality of pollutants (Cavka et al 2008;Butova et al 2016;Tsivadze et al 2019;Solovtsova et al 2020;Pribylov et al 2021;Uflyand et al 2021;Bai et al 2016). This is explained by high chemical and mechanical stability of Zr-MOFs due to the formation of strong bonds of zirconium with carboxyl groups (Cavka et al 2008;Wu et al 2013;Howarth et al 2016;Schaate et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Solid-phase extraction of organic dyes on mixed-ligand Zr(IV) metal-organic framework

Kharisov

Kharissova

Zhinzhilo

et al. 2022

Preprint

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Effective removal of organic dyes from aqueous solution is an important task for targeted wastewater treatment. In this work, a mixed-ligand Zr(IV) metal organic framework based on terephthalic acid and 1,10-phenanthroline was used for the solid-phase extraction of dyes. The maximum adsorption capacity of the sorbent for Congo red and methylene blue dyes reached 40 mg/g. The adsorption behavior was studied, including the effect of time, temperature, adsorbent dosage, pH and coexisting ions. The reliability of the sorbent for removing artificial dyes from food samples and in artificial seawater was tested. The possibility of using the sorbent as a filler for column chromatography for dye separation is shown.

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Zr-Based Metal–Organic Nanoporous Adsorbents of High Density for Methane Storage

Cited by 8 publications

References 21 publications

ZrBDC-Based Functional Adsorbents for Small-Scale Methane Storage Systems

ZrBDC-Based Functional Adsorbents for Small-Scale Methane Storage Systems

Molecular Spectroscopy Evidence of 1,3,5-Tris(4-carboxyphenyl)benzene Binding to DNA: Anticancer Potential along with the Comparative Binding Profile of Intercalation via Modeling Studies

Solid-phase extraction of organic dyes on mixed-ligand Zr(IV) metal-organic framework

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