Development of MgSO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e673" altimg="si1.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:math>/mesoporous silica composites for thermochemical energy storage: the role of porous structure on water adsorption

Liu, Xin; Wang, Haomin; Liu, Xiao; Yang, Fangming; Guan, Grace; Sani, Suleiman; Wu, Yupeng

doi:10.1016/j.egyr.2022.03.137

Cited by 14 publications

(3 citation statements)

References 41 publications

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“…The adsorption performance improved owing to the continuous porous structure preserving the vapor diffusion flow [196] and the good interfacial interaction between salt and matrix [197] when employing cellular silicone foam supporting salts to form the composites. Interestingly, a smaller pore size distribution region was found for the silicone foam-based composites compared with the silica gel-based composite owing to the better dispersion of salt molecules on pore walls for the former [198,199]. Furthermore, the silicone foam matrix may be effective for hygroscopic salts, such as LiCl, to limit swelling and agglomeration [196].…”

Section: Salt Content Of the Composite Materialsmentioning

confidence: 99%

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

et al. 2023

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Recent years have seen increasing attention to TCES technology owing to its potentially high energy density and suitability for long-duration storage with negligible loss, and it benefits the deployment of future net-zero energy systems. This paper provides a review of salt hydrate adsorption material-based TCES for space heating applications at ~150 °C. The incorporation of salt hydrates into a porous matrix to form composite materials provides the best avenue to overcome some challenges such as mass transport limitation and lower thermal conductivity. Therefore, a systematic classification of the host matrix is given, and the most promising host matrix, MIL-101(Cr)(MOFs), which is especially suitable for loading hygroscopic salt, is screened from the perspective of hydrothermal stability, mechanical strength, and water uptake. Higher salt content clogs pores and, conversely, reduces adsorption performance; thus, a balance between salt content and adsorption/desorption performance should be sought. MgCl2/rGOA is obtained with the highest salt loading of 97.3 wt.%, and the optimal adsorption capacity and energy density of 1.6 g·g−1 and 2225.71 kJ·kg−1, respectively. In general, larger pores approximately 8–10 nm inside the matrix are more favorable for salt dispersion. However, for some salts (MgSO4-based composites), a host matrix with smaller pores (2–3 nm) is beneficial for faster reaction kinetics. Water molecule migration behavior, and the phase transition path on the surface or interior of the composite particles, should be identified in the future. Moreover, it is essential to construct a micromechanical experimental model of the interface.

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Section: Salt Content Of the Composite Materialsmentioning

confidence: 99%

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

et al. 2023

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“…During the last decades, mesostructured silica materials have been widely used in different applications. − However, the most common usage is as supports for active phases in heterogeneous catalysis. The use of different structure directing agents, or the addition of swelling agents during the synthesis procedure of these materials, allows us to tune the morphology, structure, and pore size of the resultant mesoporous silica .…”

Section: Introductionmentioning

confidence: 99%

Efficient Self-Condensation of Cyclohexanone into Biojet Fuel Precursors over Sulfonic Acid-Modified Silicas: Insights on the Effect of Pore Size and Structure

Martín,

Arribas-Yuste,

Paniagua

et al. 2024

ACS Sustainable Chem. Eng.

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“…The repeated stability of MgSO 4 –HAP is investigated, and it is discovered that this two-component sorbent is relatively stable after 20 dehydration/hydration cycles. Furthermore, Liu et al ( 2022 ) prepared a novel salt composite, by combining various mesoporous silica with high pore size and volume with MgSO 4 . Salt composites produced at 30 °C, and a vapor pressure of 25 mbar demonstrated outstanding water adsorption capability of 50 wt% at a MgSO 4 loading level of 50 wt%.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on a thermochemical seasonal sorption energy storage battery utilizing MgSO4-H2O

Salama,

Mohamed,

Attalla

et al. 2023

Environ Sci Pollut Res

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Thermochemical sorption energy storage (TSES) is the most recent thermal energy storage technology and has been proposed as a promising solution to reduce the mismatch between the energy supply and demand by storing energy for months in form of chemical bonds and restore it in form of synthesis chemical reaction. Compared with sensible/latent thermal energy processes, TSES system has major advantages, including a high energy storage capacity/density and the possibility of long-term energy retention with negligible heat loss. Therefore, a solid–gas thermochemical sorption battery is established and investigated utilizing a composite working pair of MgSO4–H2O based on room temperature expanded graphite (RTEG), treated with sulfuric acid (H2SO4) and ammonium persulfate ((NH4)2S2O8) as a porous additive. The experimental results showed that energy storage density and sorption efficiency increase with the increment of charging temperature or decreasing of discharging temperature at a certain ambient temperature. Under experimental conditions, energy density ranged from 31.7 to 908.8 kJ/kg (corresponding to volume energy density from 11.7 to 335.8 MJ/m3), while sorption energy efficiency ranged from 28.3 to 79.1%. The highest values were obtained when charging, condensation, and discharging temperatures were 95, 20, and 15 °C, respectively. The maximum thermal efficiency was 21.1% at charging/discharging temperature of 95/15 °C with sensible to sorption heat ratio of 3:1. Graphical Abstract

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Development of MgSO4/mesoporous silica composites for thermochemical energy storage: the role of porous structure on water adsorption

Cited by 14 publications

References 41 publications

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

Efficient Self-Condensation of Cyclohexanone into Biojet Fuel Precursors over Sulfonic Acid-Modified Silicas: Insights on the Effect of Pore Size and Structure

Experimental investigation on a thermochemical seasonal sorption energy storage battery utilizing MgSO4-H2O

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