Ionic clathrate hydrates loaded into a cryogel – halloysite clay composite for cold storage

Stoporev, Andrey S.; Mendgaziev, Rais I.; Artemova, Maria; Semenov, Anton P.; Новиков, А. А.; Kiiamov, Airat; Emelianov, Dmitrii A.; Rodionova, T. V.; Fakhrullin, Rawil; Shchukin, Dmitry

doi:10.1016/j.clay.2020.105618

Cited by 22 publications

(8 citation statements)

References 44 publications

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“…Recently, Stoporev et al reported an interesting application of HNTs containing nanocomposite cryogels and showed that a cryogel matrix composed of poly(vinyl alcohol) (PVA) and natural HNTs can be used for the cold storage. The clay nanotubes promoted the hydrate nucleation, reducing the supercooling of the formed hydrate, while PVA provided the formation of a cryogel and the sedimentation stability of HNT inside the dispersion [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

One-Shot Preparation of Polybasic Ternary Hybrid Cryogels Consisting of Halloysite Nanotubes and Tertiary Amine Functional Groups: An Efficient and Convenient Way by Freezing-Induced Gelation

Besli

Orakdöğen

2021

Gels

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A convenient method for the preparation of polybasic ternary hybrid cryogels consisting of Halloysite nanotubes (HNTs) and tertiary amine functional groups by freezing-induced gelation is proposed. Ternary hybrid gels were produced via one-shot radical terpolymerization of 2-hydroxyethyl methacrylate (HEMA), 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS), and DEAEMA in the presence of HNTs. The equilibrium swelling in various swelling media and the mechanical properties of the produced ternary hybrid gels were analyzed to investigate their network structure and determine their final performance. The swelling ratio of HNT-free gels was significantly higher than the ternary hybrid gels composed of high amount of HNTs. The addition of HNTs to terpolymer network did not suppress pH- and temperature-sensitive behavior. While DEAEMA groups were effective for pH-sensitive swelling, it was determined that both HEMA and DEAEMA groups were effective in temperature-sensitive swelling. Ternary hybrid gels simultaneously demonstrated both negative and positive temperature-responsive swelling behavior. The swelling ratio changed considerably according to swelling temperature. Both DEAEMA and HEMA monomers in terpolymer structure were dominant in temperature-sensitive swelling. Mechanical tests in compression of both as-prepared and swollen-state demonstrated that strength and modulus of hybrid cryogels significantly increased with addition of HNTs without significant loss of mechanical strength. Ultimately, the results of the current system can benefit characterization with analysis tools for the application of innovative materials.

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Section: Introductionmentioning

confidence: 99%

One-Shot Preparation of Polybasic Ternary Hybrid Cryogels Consisting of Halloysite Nanotubes and Tertiary Amine Functional Groups: An Efficient and Convenient Way by Freezing-Induced Gelation

Besli

Orakdöğen

2021

Gels

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“…On the whole, the thermodilatometric curves of rocks 1-3 seem consistent with the thermodilatometric behavior of the Na-, K-, Cs-, Mg-, Ca-and Sr-chabazite [29]. This issue appears perfectly logical, as most of the cations contained in natural zeolites were those present in the various waters that contacted the parent volcanic glass or the zeolitized rock itself (Na + , K + , Ca 2+ , and Mg 2+ are the cations usually present in hydrothermal, meteoric or hydrothermal waters) [34][35][36][37][38][39]. The limited shrinkage attained at 250 • C (ranging from −0.21 to −0.25%) may have been related to the fact that the total content of zeolites of such rocks ranged between 49 and 59% of their total mass, while the remaining components of rocks 1-3, other than zeolites, expanded as temperature increased.…”

Section: Discussionmentioning

confidence: 57%

“…In the past years, the thermodilatometric behavior of zeolites and clays has been studied [23][24][25][26][27][28][29][30][31][32][33][34][35]. In particular, these studies have been performed on zeolite A [23][24][25][26][27][28][29], synthetic zeolite X and Y [24,28], natural natrolite, thomsonite, scolecite, heulandite, clinoptilolite, stilbite [30,31], natural chabazite [32], and various phillipsite and chabazite bearing tuffs [33].…”

Section: Introductionmentioning

confidence: 99%

Thermodilatometric Study of the Decay of Zeolite-Bearing Building Materials

et al. 2021

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Six zeolite-bearing rocks, often used as building materials, were analyzed by thermodilatometry, together with a rock not bearing zeolites and a plaster covering a containing wall made of zeolite-bearing dimension stones, up to 250 °C. The main results obtained were the following: (i) the zeolite-bearing rocks exhibited very small, if any, positive variation of ΔL/Lo (%) up to about 100 °C, whereas they more or less shrank in the temperature range 100–250 °C (final values ranging from −0.21 to −0.92%); (ii) the rock not bearing zeolites regularly expanded through the whole temperature range, attaining a final value of 0.19%; (iii) the plaster showed a thermodilatometric behavior strongly affected by its water content. Obtained results were interpreted based on plain thermal expansion, shrinkage by dehydration, cation migration and thermal collapse of the zeolitic structure. The decay of the zeolite-bearing building materials was essentially related to: (i) the large differences recorded in the thermodilatometric behavior of the various rocks and the plaster; (ii) the different minerogenetic processes that resulted in the deposition of the various zeolite-bearing rocks.

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“…These materials are characterized by good thermal stability, a high adsorption capacity and low cost. Halloysite nanoclay is used generally as a nucleating agent to mitigate the supercooling phenomena of the hydrate PCMs and is applied for cold storage [ 37 , 38 ] Other supporting materials including refractory oxides (MgO, Al 2 O 3 , SiO 2 , mullite), SiC and Ca(OH) 2 [ 11 , 13 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 ]. The compatibility and good wettability with nitrates, carbonates, chlorides and sulfates have been proven for most of them.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Li4(OH)3Br-Based Shape Stabilized Composites for High-Temperature TES Applications: Selection of the Most Convenient Supporting Material

et al. 2021

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Peritectic compound Li4(OH)3Br has been recently proposed as phase change material (PCM) for thermal energy storage (TES) applications at approx. 300 °C Compared to competitor PCM materials (e.g., sodium nitrate), the main assets of this compound are high volumetric latent heat storage capacity (>140 kWh/m3) and very low volume changes (<3%) during peritectic reaction and melting. The objective of the present work was to find proper supporting materials able to shape stabilize Li4(OH)3Br during the formation of the melt and after its complete melting, avoiding any leakage and thus obtaining a composite apparently always in the solid state during the charge and discharge of the TES material. Micro-nanoparticles of MgO, Fe2O3, CuO, SiO2 and Al2O3 have been considered as candidate supporting materials combined with the cold-compression route for shape-stabilized composites preparation. The work carried out allowed for the identification of the most promising composite based on MgO nanoparticles through a deep experimental analysis and characterization, including chemical compatibility tests, anti-leakage performance evaluation, structural and thermodynamic properties analysis and preliminary cycling stability study.

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Ionic clathrate hydrates loaded into a cryogel – halloysite clay composite for cold storage

Cited by 22 publications

References 44 publications

One-Shot Preparation of Polybasic Ternary Hybrid Cryogels Consisting of Halloysite Nanotubes and Tertiary Amine Functional Groups: An Efficient and Convenient Way by Freezing-Induced Gelation

One-Shot Preparation of Polybasic Ternary Hybrid Cryogels Consisting of Halloysite Nanotubes and Tertiary Amine Functional Groups: An Efficient and Convenient Way by Freezing-Induced Gelation

Thermodilatometric Study of the Decay of Zeolite-Bearing Building Materials

Li4(OH)3Br-Based Shape Stabilized Composites for High-Temperature TES Applications: Selection of the Most Convenient Supporting Material

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