Use of Zeolites in the Capture and Storage of Thermal Energy by Water Desorption—Adsorption Cycles

Gennaro, Bruno de; Cappi, Angelo; Gennaro, Maurizio de; Bianco, Nicola; Langella, Alessio; Cappelletti, Piergiulio; Marocco, Antonello; Aprea, Paolo; Pansini, Michele

doi:10.3390/ma15165574

Cited by 6 publications

(6 citation statements)

References 46 publications

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“…Results presented in Fig. 8 are in agreement with Xu et al [16] and de Gennaro et al [34] as it is clear there is some damage to the particles immediately following hydration. However, there is little difference in the mean diameter between the particles pre-soaking and post-soaking in the salt solution.…”

Section: Instrumentation and Equipmentsupporting

confidence: 90%

“…In all cases, no change in the morphology of the material was observed. In the case of the control, this is to be expected as the zeolite TCES has been shown to be stable over more than 60 cycles (particle diameter = 1.5 mm) [34]. As this process of soaking (discharging) and activating (charging) is comparable to a TCES cycle it demonstrates that, as expected, this zeolite does not incur any visible damage after a cycle.…”

Section: Instrumentation and Equipmentsupporting

confidence: 65%

“…Hence, many of the particles placed in this bin a likely to have smaller diameters than those that can be measured. Xu et al [16] and de Gennaro et al [34] suggested that cracking and breakdown of the particles were initiated by the expansion of the zeolite matrix during the soaking process. Results presented in Fig.…”

Section: Instrumentation and Equipmentmentioning

confidence: 99%

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Investigation of Particle Breakdown in the Production of Composite Magnesium Chloride and Zeolite Based Thermochemical Energy Storage Materials

F. Marie,

Sałek,

S. O’Donovan

2023

Energy Engineering

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Composite thermochemical energy storage (TCES) represents an exciting field of thermal energy storage which could address the issue of seasonal variance in renewable energy supply. However, there are open questions about their performance and the root cause of some observed phenomena. Some researchers have observed the breakdown of particles in their production phase, and in their use. This study seeks to investigate the underlying cause of this breakdown. SEM and EDX analysis have been conducted on MgCl 2 impregnated 13X zeolite composites of differing diameters, as well as LiX zeolite. This was done in order to study the level of impregnation of salt into the zeolite matrix, as well as the effect this impregnation process has on the morphology of the zeolite. Analysis was conducted using ImageJ software to study the effect of the impregnation process on the diameter of the particles. It has been found that a by weight impregnation concentration of magnesium chloride of 11.90% for the LiX zeolite, and 7.59% and 5.26% for the large diameter 13X zeolite and the small diameter 13X zeolite respectively has been achieved. It has been found that the impregnation process significantly affects the morphology of 13X zeolite particles, causing large fissures to form, and eventually resulting in the previously found breakdown of these particles. It has been verified that a primary factor influencing the breakdown of the 13X zeolite particles is the efflorescence and sub-fluorescence phenomena, which leads to a build-up of crystals in the zeolite pores. It has also been found that prolonged impregnation times and the use of high concentration salt solutions in the soaking process can induce significant crystal growth which also leads to the breakdown of these particles. Results demonstrate that LiX zeolite is the optimum host matrix choice in these conditions. These results will allow for the design of more resilient composite TCES particles. KEYWORDSComposites; thermochemical energy storage; salt-in-porous-matrix; zeolites; seasonal storage Nomenclature σ cra Fracture Stress K p Fracture Toughness r Radius

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Section: Instrumentation and Equipmentsupporting

confidence: 90%

Section: Instrumentation and Equipmentsupporting

confidence: 65%

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Investigation of Particle Breakdown in the Production of Composite Magnesium Chloride and Zeolite Based Thermochemical Energy Storage Materials

F. Marie,

Sałek,

S. O’Donovan

2023

Energy Engineering

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“…Shortage and low energy utilization are becoming a constraint to the social economy. Many scholars used adsorbent–water as a working pair in the adsorption thermal energy storage field to alleviate the energy problem, − due to the large specific heat capacity, thermal stability, and eco-friendliness of water, and that water can be used for both heat and cold storage. − Commonly applied in water vapor adsorption adsorbents are silica gel, molecular sieve, metal–organic framework (MOF), and carbon nanomaterial . Among them, MOF and carbon nanomaterial are more popular because of their large adsorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Porous Carbon Nanomaterials for Water Vapor Adsorption

Sun

et al. 2023

ACS Appl. Nano Mater.

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In order to make porous carbon nanomaterial more suitable for the adsorption thermal energy storage field, it is necessary to modify the carbon nanomaterial to enhance water vapor adsorption capacity. This work investigated the influence of anionic surfactant sodium dodecylbenzenesulfonate (SDBS) modification on the physicochemical properties of coffee-shell carbon nanomaterials (CCNMs). The physicochemical properties of carbon nanomaterials were characterized. Water vapor adsorption isotherm, thermodynamics, and kinetics were analyzed to investigate further adsorption behavior over the CCNMs. The results suggest that the highest adsorption capacity of water vapor for modified CCNM (SDBS-CCNM) is up to 833.2 mg/g, with 2% SDBS mass fraction, 500 °C calcination temperature, and 30 min calcination time. However, its BET specific surface area and average pore size are only 2018 m 2 /g and 1.915 nm, respectively. On the other hand, the modification improved the amount of total surface oxygen-containing functional groups (SOFGs), mainly phenolic hydroxyl of SDBS-CCNM, compared with unmodified CCNM, which is conducive to water vapor adsorption on SDBS-CCNM under lower relative pressure. And water contact angles are less than 34°. Furthermore, the dynamic adsorption process of water vapor on CCNMs was described by the Bangham model, which suggests that surface adsorption center sites of SDBS-CCNMs play a significant role in the water vapor adsorption process under lower relative pressure. As relative pressure increases, water molecules form clusters around the water molecules previously adsorbed at the active site through hydrogen-bonding interaction. When the clusters are large enough, water molecules begin to fill the pores of the CCNMs until the adsorption process becomes saturated. All the above results indicate that carbon nanomaterials are hydrophilic. Thus, the modified CCNM obtained in the present work can be a potential carbon nanomaterial with an excellent adsorption capacity for adsorption thermal energy storage.

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“…Then, zeolite tuffs were employed as fillers in warm mix asphalt in civil engineering [6] . In the energy field, zeolite captures and stores thermal energy [7] . Furthermore, zeolite is employed as a catalyst in the hydrodeoxygenation reaction of oleic acid to produce renewable diesel [8] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetite-Modified Natural Zeolite Using Coprecipitation and Physical Mixing Techniques

Pambudi,

Umam

2023

indonesian

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The synthesis of magnetite-modified natural zeolite has been carried out using two techniques, namely coprecipitation and physical mixing. The characteristics (crystallinity, pore characteristics, and recovery capabilities) of the resulting composites are compared. In addition, the effect of the Fe3O4 fraction (25.0% w/w, 33.3% w/w, and 50.0% w/w) on the composite characteristics was also evaluated. The results showed that the natural zeolite/Fe3O4 prepared using the coprecipitation technique showed better distribution of Fe3O4 than the physical mixing technique. It was observed that the natural zeolite's XRD peak intensity decreased as the Fe3O4 content increased. In accordance with the N2 adsorption-desorption isotherm, the pore spaces of the natural zeolite have been found to be filled by suspended Fe3O4 particles. Therefore, both natural zeolite/Fe3O4 prepared by coprecipitation and physical mixing had smaller pore diameters than washed natural zeolite. Then, in terms of recovery ability, natural zeolite/Fe3O4 prepared using the coprecipitation technique has greater recovery ability than natural zeolite/Fe3O4 prepared by physical mixing, with an increase in the Fe3O4 percentage typically enhancing the composite's recovery ability.

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Use of Zeolites in the Capture and Storage of Thermal Energy by Water Desorption—Adsorption Cycles

Cited by 6 publications

References 46 publications

Investigation of Particle Breakdown in the Production of Composite Magnesium Chloride and Zeolite Based Thermochemical Energy Storage Materials

Investigation of Particle Breakdown in the Production of Composite Magnesium Chloride and Zeolite Based Thermochemical Energy Storage Materials

Surface Modification of Porous Carbon Nanomaterials for Water Vapor Adsorption

Synthesis of Magnetite-Modified Natural Zeolite Using Coprecipitation and Physical Mixing Techniques

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