This page has only limited features, please log in for full access.
Recently, CaMnO3 has been proposed as a promising candidate for high temperature thermochemical heat storage. The material reversibly releases oxygen in response to changes in oxygen partial pressure (pO2) in the temperature range (800-1000°C) suitable for Concentrated Solar Power (CSP) plants. However, it undergoes decomposition at pO2<0.008 atm and at temperature ≥ 1100°C, limiting its value. In this study, doping with La on the A-site (10 and 30 cat%) was explored as an approach for tuning thermochemical behavior (i.e. reaction enthalpy, reaction entropy, reaction extent, reduction onset temperature, and thermal stability). The thermodynamic properties were determined from mass loss measurements at selected pO2. Both 10 and 30 cat% La stabilized the base oxide against decomposition up to 1200°C at pO2=0.008 atm, providing access to higher operating temperatures. At 10 cat% La, both the reaction enthalpy and the reaction entropy increased, whereas both decreased at the 30 cat% doping level. The chemical heat storage capacity of Ca0.9La0.1MnO3 (~265 kJ/kgABO3) was found to be comparable to that of undoped CaMnO3, which is in turn much higher than that of Ca0.7La0.3MnO3 (~97 kJ/kgABO3) and slightly lower than was previously reported for CaMn0.9Fe0.1O3 under similar conditions. The differences between the heat storage capacities of these materials can be fully understood in terms of the differences in the enthalpies and entropies of reduction. Entropy is not a metric usually considered when estimating the thermochemical storage capacity of a material, but it is an essential property because, as discussed here, the reaction extent depends monotonically on this term. Accordingly, materials with large entropy of reduction and intermediate enthalpy of reduction, where the latter metric represents a compromise between the heat per mole of reacted oxide and reaction extent, are desirable for chemical heat storage applications.
Emanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina M. Haile. Impact of La doping on the thermochemical heat storage properties of CaMnO3-δ. Journal of Energy Storage 2021, 40, 102793 .
AMA StyleEmanuela Mastronardo, Xin Qian, Juan M. Coronado, Sossina M. Haile. Impact of La doping on the thermochemical heat storage properties of CaMnO3-δ. Journal of Energy Storage. 2021; 40 ():102793.
Chicago/Turabian StyleEmanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina M. Haile. 2021. "Impact of La doping on the thermochemical heat storage properties of CaMnO3-δ." Journal of Energy Storage 40, no. : 102793.
Thermochemical materials (TCM) are among the most promising systems to store high energy density for long-term energy storage. To be eligible as candidates, the materials have to fit many criteria such as complete reversibility of the reaction and cycling stability, high availability of the material at low cost, environmentally friendliness, and non-toxicity. Among the most promising TCM, the Mg(OH)2/MgO system appears worthy of attention for its properties in line with those required. In the last few decades, research focused its attention on the optimization of attractive hydroxide performance to achieve a better thermochemical response, however, often negatively affecting its energy density per unit of volume and therefore compromising its applicability on an industrial scale. In this study, pure Mg(OH)2 was developed using different synthesis procedures. Reverse deposition precipitation and deposition precipitation methods were used to obtain the investigated samples. By adding a cationic surfactant (cetyl trimethylammonium bromide), deposition precipitation Mg(OH)2 (CTAB-DP-MH) or changing the precipitating precursor (N-DP-MH), the structural, physical and morphological characteristics were tuned, and the results were compared with a commercial Mg(OH)2 sample. We identified a correlation between the TCM properties and the thermochemical behavior. In such a context, it was demonstrated that both CTAB-DP-MH and N-DP-MH improved the thermochemical performances of the storage medium concerning conversion (64 wt.% and 74 wt.% respectively) and stored and released heat (887 and 1041 kJ / kg Mg ( OH ) 2 ). In particular, using the innovative technique not yet investigated for thermal energy storage (TES) materials, with NaOH as precipitating precursor, N-DP-MH reached the highest stored and released heat capacity per volume unit, ~684 MJ/m3.
Elpida Piperopoulos; Marianna Fazio; Emanuela Mastronardo; Maurizio Lanza; Candida Milone. Tuning Mg(OH)2 Structural, Physical, and Morphological Characteristics for Its Optimal Behavior in a Thermochemical Heat-Storage Application. Materials 2021, 14, 1091 .
AMA StyleElpida Piperopoulos, Marianna Fazio, Emanuela Mastronardo, Maurizio Lanza, Candida Milone. Tuning Mg(OH)2 Structural, Physical, and Morphological Characteristics for Its Optimal Behavior in a Thermochemical Heat-Storage Application. Materials. 2021; 14 (5):1091.
Chicago/Turabian StyleElpida Piperopoulos; Marianna Fazio; Emanuela Mastronardo; Maurizio Lanza; Candida Milone. 2021. "Tuning Mg(OH)2 Structural, Physical, and Morphological Characteristics for Its Optimal Behavior in a Thermochemical Heat-Storage Application." Materials 14, no. 5: 1091.
Summary Variable valence oxides of the perovskite crystal structure have emerged as promising candidates for solar hydrogen production via two-step thermochemical cycling. Here, we report the exceptional efficacy of the perovskite CaTi0.5Mn0.5O3–δ (CTM55) for this process. The combination of intermediate enthalpy, ranging between 200 and 280 kJ (mol-O)−1, and large entropy, ranging between 120 and 180 J (mol-O)−1 K−1, of CTM55 create favorable conditions for water splitting. The oxidation state changes are dominated by Mn, with Ti stabilizing the cubic phase and increasing its reduction enthalpy. A hydrogen yield of 10.0 ± 0.2 mL g−1 is achieved in a cycle between 1,350°C (reduction) and 1,150°C (water splitting) and a total cycle time of 1.5 h, exceeding all previous fuel production reports. The gas evolution rate suggests rapid material kinetics, and, at 1,150°C and higher, a process primarily limited by the magnitude of the thermodynamic driving force.
Xin Qian; Jiangang He; Emanuela Mastronardo; Bianca Baldassarri; Weizi Yuan; Christopher Wolverton; Sossina M. Haile. Outstanding Properties and Performance of CaTi0.5Mn0.5O3–δ for Solar-Driven Thermochemical Hydrogen Production. Matter 2020, 4, 688 -708.
AMA StyleXin Qian, Jiangang He, Emanuela Mastronardo, Bianca Baldassarri, Weizi Yuan, Christopher Wolverton, Sossina M. Haile. Outstanding Properties and Performance of CaTi0.5Mn0.5O3–δ for Solar-Driven Thermochemical Hydrogen Production. Matter. 2020; 4 (2):688-708.
Chicago/Turabian StyleXin Qian; Jiangang He; Emanuela Mastronardo; Bianca Baldassarri; Weizi Yuan; Christopher Wolverton; Sossina M. Haile. 2020. "Outstanding Properties and Performance of CaTi0.5Mn0.5O3–δ for Solar-Driven Thermochemical Hydrogen Production." Matter 4, no. 2: 688-708.
The aim of this paper is the synthesis and characterization of a composite silicone foam filled with expanded graphite (EG) for oil spill recovery applications. The EG foams were obtained using a foaming slurry consisting of a mixture of siloxane compounds as the matrix with an EG filler. The effect of the filler content’s performance on an innovative composite silicone-based foam was investigated. All the obtained samples exhibited an open cell morphology. Each foam was evaluated in four commonly used oils (kerosene, pump oil, naphtha and crude oil). Additionally, kinetics was studied in order to investigate the physical, chemical and mass transport mechanisms that act during the absorption phenomenon and uptake evolution of the contaminants. Foam filled with 3% of EG exhibited the highest absorption capacity, particularly with light oils kerosene and virgin naphtha (854 and 1016 wt.%, respectively). Furthermore, the kinetic study showed that pseudo-second order mechanisms better fitted the composite absorption performances, suggesting that the oil sorption into EG filled polydimethylsiloxane (PDMS) foams could be related to chemisorption mechanism. The results evidenced a good oil sorption capability and water/oil selectivity indicating this class of materials as a potentially applicable material for oil spill remediation.
Vincenza Brancato; Elpida Piperopoulos; Emanuela Mastronardo; Luigi Calabrese; Candida Milone; Edoardo Proverbio. Synthesis and Characterization of Graphite Composite Foams for Oil Spill Recovery Application. Journal of Composites Science 2020, 4, 154 .
AMA StyleVincenza Brancato, Elpida Piperopoulos, Emanuela Mastronardo, Luigi Calabrese, Candida Milone, Edoardo Proverbio. Synthesis and Characterization of Graphite Composite Foams for Oil Spill Recovery Application. Journal of Composites Science. 2020; 4 (4):154.
Chicago/Turabian StyleVincenza Brancato; Elpida Piperopoulos; Emanuela Mastronardo; Luigi Calabrese; Candida Milone; Edoardo Proverbio. 2020. "Synthesis and Characterization of Graphite Composite Foams for Oil Spill Recovery Application." Journal of Composites Science 4, no. 4: 154.
This paper studies the correlation between oil recovery usability and mechanical behavior under compression loads of an innovative oil recovery material. The examined composites are silicone foams filled with carbon nanotubes (CNT). Here, the reutilization of oil recovery processes of the newly developed composite foams is evaluated. In this regard, static and cyclic compressive tests are carried out. Samples filled with pristine and functionalized CNT are tested to evaluate the influence of the filler’s characteristics on the composite foam’s mechanical behavior. The results show that the presence of CNT (CNT-0) increases the elastic modulus (0.030 MPa) and collapse stress (0.010 MPa) of the siloxane matrix. On the contrary, as the CNT functionalization degree increases, a worsening of the composite’s mechanical performance is observed. CNT-0 foam evidences, also, the optimal mechanical stability to cyclic compressive loads, maintaining high stress values until 30 cycles. Furthermore, a correlation between the absorption capacity, elastic modulus, and cyclability is reported, highlighting a simplified approach to tailor the high absorption durability performance of filled CNT silicone foams. The promising results confirm the possible reuse of these new composite foams as absorbent materials for oil spill recovery applications.
Elpida Piperopoulos; Luigi Calabrese; Emanuela Mastronardo; Edoardo Proverbio; Candida Milone. Carbon Nanotubes-Filled Siloxane Composite Foams for Oil Recovery Application: Compression Properties. Fibers 2020, 8, 45 .
AMA StyleElpida Piperopoulos, Luigi Calabrese, Emanuela Mastronardo, Edoardo Proverbio, Candida Milone. Carbon Nanotubes-Filled Siloxane Composite Foams for Oil Recovery Application: Compression Properties. Fibers. 2020; 8 (7):45.
Chicago/Turabian StyleElpida Piperopoulos; Luigi Calabrese; Emanuela Mastronardo; Edoardo Proverbio; Candida Milone. 2020. "Carbon Nanotubes-Filled Siloxane Composite Foams for Oil Recovery Application: Compression Properties." Fibers 8, no. 7: 45.
The CaFe0.1Mn0.9O3−δ0 oxide can reversibly release oxygen over a relatively wide range of temperatures and oxygen partial pressures and its favourable thermodynamic properties make it a promising candidate for thermochemical heat storage.
Emanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina M. Haile. The favourable thermodynamic properties of Fe-doped CaMnO3 for thermochemical heat storage. Journal of Materials Chemistry A 2020, 8, 8503 -8517.
AMA StyleEmanuela Mastronardo, Xin Qian, Juan M. Coronado, Sossina M. Haile. The favourable thermodynamic properties of Fe-doped CaMnO3 for thermochemical heat storage. Journal of Materials Chemistry A. 2020; 8 (17):8503-8517.
Chicago/Turabian StyleEmanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina M. Haile. 2020. "The favourable thermodynamic properties of Fe-doped CaMnO3 for thermochemical heat storage." Journal of Materials Chemistry A 8, no. 17: 8503-8517.
Emanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina Haile. Fe-doped CaMnO3 for thermochemical heat storage application. SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems 2019, 1 .
AMA StyleEmanuela Mastronardo, Xin Qian, Juan M. Coronado, Sossina Haile. Fe-doped CaMnO3 for thermochemical heat storage application. SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems. 2019; ():1.
Chicago/Turabian StyleEmanuela Mastronardo; Xin Qian; Juan M. Coronado; Sossina Haile. 2019. "Fe-doped CaMnO3 for thermochemical heat storage application." SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems , no. : 1.
Sorption kinetics of pollutant oils, such as kerosene, virgin naphtha, crude oil, and pump oil, into porous siloxanic foams filled with carbon nanotubes (CNTs) are investigated. Both, pristine and functionalized, CNTs are used as foam fillers. Among all, the foam filled with pristine CNT shows a poor affinity with water and high sorption rate in light oils, in which it achieves the highest absorption values (7991 mg g−1 after 660 s and 6685 mg g−1 after 420 s, respectively, in virgin naphtha and kerosene). The kinetic data are described by the pseudo‐first order, pseudo‐second order, Elovich and intraparticle diffusion models. Results show that chemisorption processes are rate limiting the sorption step. In fact, pseudo‐second order model better represents the equilibrium isotherm data. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 9999, 47374.
E. Piperopoulos; L. Calabrese; Emanuela Mastronardo; S. H. Abdul Rahim; E. Proverbio; Candida Milone. Assessment of sorption kinetics of carbon nanotube‐based composite foams for oil recovery application. Journal of Polymer Science 2018, 1 .
AMA StyleE. Piperopoulos, L. Calabrese, Emanuela Mastronardo, S. H. Abdul Rahim, E. Proverbio, Candida Milone. Assessment of sorption kinetics of carbon nanotube‐based composite foams for oil recovery application. Journal of Polymer Science. 2018; ():1.
Chicago/Turabian StyleE. Piperopoulos; L. Calabrese; Emanuela Mastronardo; S. H. Abdul Rahim; E. Proverbio; Candida Milone. 2018. "Assessment of sorption kinetics of carbon nanotube‐based composite foams for oil recovery application." Journal of Polymer Science , no. : 1.
This work deals with the study of influence of multi walled carbon nanotubes (CNTs) characteristics on thermochemical performance of hybrid materials based on Mg(OH)2 (M) as heat storage medium. Two different functionalized CNTs samples are investigated, separated curly tubes (SN) and bundles of straight nanotubes (BN). Hybrids were synthesized by reverse deposition precipitation method and their structure was characterized by X-ray analysis and scanning electron microscopy. The heat storage performance was studied through a thermogravimetric apparatus, simulating heat storage/release cycles. It is demonstrated that separated CNTs owning mainly carboxylic groups increase the interaction with precipitated magnesium hydroxide, improving the reacted fraction during dehydration/hydration cycle. In terms of dehydration/hydration conversion the samples’ rank is SN-M>Mg(OH)2>BN-M. SN-M exhibits higher heat storage/output capacity (~1250 kJ/kgMg(OH)2, ~350 MJ/m3).
Elpida Piperopoulos; Emanuela Mastronardo; Marianna Fazio; Maurizio Lanza; Signorino Galvagno; Candida Milone. Synthetic strategies for the enhancement of Mg(OH)2 thermochemical performances as heat storage material. Energy Procedia 2018, 155, 269 -279.
AMA StyleElpida Piperopoulos, Emanuela Mastronardo, Marianna Fazio, Maurizio Lanza, Signorino Galvagno, Candida Milone. Synthetic strategies for the enhancement of Mg(OH)2 thermochemical performances as heat storage material. Energy Procedia. 2018; 155 ():269-279.
Chicago/Turabian StyleElpida Piperopoulos; Emanuela Mastronardo; Marianna Fazio; Maurizio Lanza; Signorino Galvagno; Candida Milone. 2018. "Synthetic strategies for the enhancement of Mg(OH)2 thermochemical performances as heat storage material." Energy Procedia 155, no. : 269-279.
The chapter addresses the main issues dealing with four types of reversible processes, such as dehydration of salt hydrates and hydroxides, thermal decomposition of oxides and perovskites for thermal energy storage as example of thermochemical processes covering a broad range of temperature heat sources.
Candida Milone; Yukitaka Kato; Emanuela Mastronardo. Thermal Energy Storage with Chemical Reactions. Smart and Sustainable Planning for Cities and Regions 2018, 15 -32.
AMA StyleCandida Milone, Yukitaka Kato, Emanuela Mastronardo. Thermal Energy Storage with Chemical Reactions. Smart and Sustainable Planning for Cities and Regions. 2018; ():15-32.
Chicago/Turabian StyleCandida Milone; Yukitaka Kato; Emanuela Mastronardo. 2018. "Thermal Energy Storage with Chemical Reactions." Smart and Sustainable Planning for Cities and Regions , no. : 15-32.
In order to investigate the influence of metal (Me) doping in Mg(OH)2 synthesis on its thermochemical behavior, Ca2+, Co2+ and Ni2+ ions were inserted in Mg(OH)2 matrix and the resulting materials were investigated for structural, morphological and thermochemical characterization. The densification of the material accompanied by the loss in porosity significantly influenced the hydration process, diminishing the conversion percentage and the kinetics. On the other hand, it increased the volumetric stored/released heat capacity (between 400 and 725 MJ/m3), reaching almost three times the un-doped Mg(OH)2 value.
Elpida Piperopoulos; Marianna Fazio; Emanuela Mastronardo. Synthesis of Me Doped Mg(OH)2 Materials for Thermochemical Heat Storage. Nanomaterials 2018, 8, 573 .
AMA StyleElpida Piperopoulos, Marianna Fazio, Emanuela Mastronardo. Synthesis of Me Doped Mg(OH)2 Materials for Thermochemical Heat Storage. Nanomaterials. 2018; 8 (8):573.
Chicago/Turabian StyleElpida Piperopoulos; Marianna Fazio; Emanuela Mastronardo. 2018. "Synthesis of Me Doped Mg(OH)2 Materials for Thermochemical Heat Storage." Nanomaterials 8, no. 8: 573.
It is here investigated the effect of the addition of the cationic surfactant cetyl trimethyl ammonium bromide (CTAB) during the precipitation of Mg(OH)2 on structural, morphological and physical properties of the resulting hydroxide. The thermochemical behaviour as heat storage material of the final samples is investigated. Mg(OH)2 is precipitated from a solution containing Mg(NO3)2 precursor at pH 11.5, using NH4OH as base, at T = 25 °C. CTAB concentration varies in the range 0.5–20.0 mM. For comparison a sample of Mg(OH)2 is prepared in absence of surfactant. The results obtained show that, at the above synthesis conditions, exists an optimum CTAB concentration value (2.0 mM) which (i) promotes the formation of well separated Mg(OH)2 particles, (ii) enhances specific surface area, (iii) lowers the hydroxide mean particle diameter and (iv) increases the bulk density likely due to the peculiar stacked configuration of hydroxide particles. As main result, Mg(OH)2 prepared at the optimum CTAB concentration exhibits the highest volumetric stored/released heat capacity, ∼560 MJ/m3, almost two times higher than that measured over Mg(OH)2 prepared in absence of CTAB. Cyclic experiments evidence an excellent stability of the sample up to 13 dehydration/hydration reactions.
Elpida Piperopoulos; Emanuela Mastronardo; Marianna Fazio; Maurizio Lanza; Signorino Galvagno; Candida Milone. Enhancing the volumetric heat storage capacity of Mg(OH)2 by the addition of a cationic surfactant during its synthesis. Applied Energy 2018, 215, 512 -522.
AMA StyleElpida Piperopoulos, Emanuela Mastronardo, Marianna Fazio, Maurizio Lanza, Signorino Galvagno, Candida Milone. Enhancing the volumetric heat storage capacity of Mg(OH)2 by the addition of a cationic surfactant during its synthesis. Applied Energy. 2018; 215 ():512-522.
Chicago/Turabian StyleElpida Piperopoulos; Emanuela Mastronardo; Marianna Fazio; Maurizio Lanza; Signorino Galvagno; Candida Milone. 2018. "Enhancing the volumetric heat storage capacity of Mg(OH)2 by the addition of a cationic surfactant during its synthesis." Applied Energy 215, no. : 512-522.
Giuliana Gorrasi; Valeria Bugatti; Candida Milone; Emanuela Mastronardo; Elpida Piperopoulos; Laura Iemmo; Antonio Di Bartolomeo. Effect of temperature and morphology on the electrical properties of PET/conductive nanofillers composites. Composites Part B: Engineering 2018, 135, 149 -154.
AMA StyleGiuliana Gorrasi, Valeria Bugatti, Candida Milone, Emanuela Mastronardo, Elpida Piperopoulos, Laura Iemmo, Antonio Di Bartolomeo. Effect of temperature and morphology on the electrical properties of PET/conductive nanofillers composites. Composites Part B: Engineering. 2018; 135 ():149-154.
Chicago/Turabian StyleGiuliana Gorrasi; Valeria Bugatti; Candida Milone; Emanuela Mastronardo; Elpida Piperopoulos; Laura Iemmo; Antonio Di Bartolomeo. 2018. "Effect of temperature and morphology on the electrical properties of PET/conductive nanofillers composites." Composites Part B: Engineering 135, no. : 149-154.
The aim of this work is the synthesis of silicone foam containing carbon nanotubes (CNT) for oil spills remediation. The CNT silicone foams are obtained by foaming a solution of a silicone matrix with CNT filler (5.6 wt %) in presence of a Sn-based catalyst. Pristine and functionalized CNT have been used. All the obtained materials present a foam morphology with an open cell structure. Each foam is tested in four commonly used oils (kerosene, pump oil, naphtha, and crude oil). Among all, the foam filled with pristine CNT shows the highest sorption capacity (800 wt % in virgin naphtha) and an excellent reusability (up to 10 times). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 46067.
Elpida Piperopoulos; Luigi Calabrese; Emanuela Mastronardo; Edoardo Proverbio; Candida Milone. Synthesis of reusable silicone foam containing carbon nanotubes for oil spill remediation. Journal of Polymer Science 2017, 135, 1 .
AMA StyleElpida Piperopoulos, Luigi Calabrese, Emanuela Mastronardo, Edoardo Proverbio, Candida Milone. Synthesis of reusable silicone foam containing carbon nanotubes for oil spill remediation. Journal of Polymer Science. 2017; 135 (14):1.
Chicago/Turabian StyleElpida Piperopoulos; Luigi Calabrese; Emanuela Mastronardo; Edoardo Proverbio; Candida Milone. 2017. "Synthesis of reusable silicone foam containing carbon nanotubes for oil spill remediation." Journal of Polymer Science 135, no. 14: 1.
Giuseppe Rosace; Valentina Trovato; Claudio Colleoni; Michele Caldara; Valerio Re; Marco Brucale; Elpida Piperopoulos; Emanuela Mastronardo; Candida Milone; Giovanna De Luca; Maria Rosaria Plutino. Structural and morphological characterizations of MWCNTs hybrid coating onto cotton fabric as potential humidity and temperature wearable sensor. Sensors and Actuators B: Chemical 2017, 252, 428 -439.
AMA StyleGiuseppe Rosace, Valentina Trovato, Claudio Colleoni, Michele Caldara, Valerio Re, Marco Brucale, Elpida Piperopoulos, Emanuela Mastronardo, Candida Milone, Giovanna De Luca, Maria Rosaria Plutino. Structural and morphological characterizations of MWCNTs hybrid coating onto cotton fabric as potential humidity and temperature wearable sensor. Sensors and Actuators B: Chemical. 2017; 252 ():428-439.
Chicago/Turabian StyleGiuseppe Rosace; Valentina Trovato; Claudio Colleoni; Michele Caldara; Valerio Re; Marco Brucale; Elpida Piperopoulos; Emanuela Mastronardo; Candida Milone; Giovanna De Luca; Maria Rosaria Plutino. 2017. "Structural and morphological characterizations of MWCNTs hybrid coating onto cotton fabric as potential humidity and temperature wearable sensor." Sensors and Actuators B: Chemical 252, no. : 428-439.
Emanuela Mastronardo; Lucio Bonaccorsi; Yukitaka Kato; Elpida Piperopoulos; Maurizio Lanza; Candida Milone. Strategies for the enhancement of heat storage materials performances for MgO/H 2 O/Mg(OH) 2 thermochemical storage system. Applied Thermal Engineering 2017, 120, 626 -634.
AMA StyleEmanuela Mastronardo, Lucio Bonaccorsi, Yukitaka Kato, Elpida Piperopoulos, Maurizio Lanza, Candida Milone. Strategies for the enhancement of heat storage materials performances for MgO/H 2 O/Mg(OH) 2 thermochemical storage system. Applied Thermal Engineering. 2017; 120 ():626-634.
Chicago/Turabian StyleEmanuela Mastronardo; Lucio Bonaccorsi; Yukitaka Kato; Elpida Piperopoulos; Maurizio Lanza; Candida Milone. 2017. "Strategies for the enhancement of heat storage materials performances for MgO/H 2 O/Mg(OH) 2 thermochemical storage system." Applied Thermal Engineering 120, no. : 626-634.
For the thermochemical performance implementation of Mg(OH)2 as a heat storage medium, several hybrid materials have been investigated. For this study, high-performance hybrid materials have been developed by exploiting the authors’ previous findings. Expanded graphite (EG)/carbon nanotubes (CNTs)-Mg(OH)2 hybrid materials have been prepared through Mg(OH)2 deposition-precipitation over functionalized, i.e., oxidized, or un-functionalized EG or CNTs. The heat storage performances of the carbon-based hybrid materials have been investigated through a laboratory-scale experimental simulation of the heat storage/release cycles, carried out by a thermogravimetric apparatus. This study offers a critical evaluation of the thermochemical performances of developed materials through their comparison in terms of heat storage and output capacities per mass and volume unit. It was demonstrated that both EG and CNTs improves the thermochemical performances of the storage medium in terms of reaction rate and conversion with respect to pure Mg(OH)2. With functionalized EG/CNTs-Mg(OH)2, (i) the potential heat storage and output capacities per mass unit of Mg(OH)2 have been completely exploited; and (ii) higher heat storage and output capacities per volume unit were obtained. That means, for technological applications, as smaller volume at equal stored/released heat.
Emanuela Mastronardo; Yukitaka Kato; Lucio Bonaccorsi; Elpida Piperopoulos; Candida Milone. Thermochemical Storage of Middle Temperature Wasted Heat by Functionalized C/Mg(OH)2 Hybrid Materials. Energies 2017, 10, 70 .
AMA StyleEmanuela Mastronardo, Yukitaka Kato, Lucio Bonaccorsi, Elpida Piperopoulos, Candida Milone. Thermochemical Storage of Middle Temperature Wasted Heat by Functionalized C/Mg(OH)2 Hybrid Materials. Energies. 2017; 10 (1):70.
Chicago/Turabian StyleEmanuela Mastronardo; Yukitaka Kato; Lucio Bonaccorsi; Elpida Piperopoulos; Candida Milone. 2017. "Thermochemical Storage of Middle Temperature Wasted Heat by Functionalized C/Mg(OH)2 Hybrid Materials." Energies 10, no. 1: 70.
Emanuela Mastronardo; Lucio Bonaccorsi; Yukitaka Kato; Elpida Piperopoulos; Maurizio Lanza; Candida Milone. Thermochemical performance of carbon nanotubes based hybrid materials for MgO/H 2 O/Mg(OH) 2 chemical heat pumps. Applied Energy 2016, 181, 232 -243.
AMA StyleEmanuela Mastronardo, Lucio Bonaccorsi, Yukitaka Kato, Elpida Piperopoulos, Maurizio Lanza, Candida Milone. Thermochemical performance of carbon nanotubes based hybrid materials for MgO/H 2 O/Mg(OH) 2 chemical heat pumps. Applied Energy. 2016; 181 ():232-243.
Chicago/Turabian StyleEmanuela Mastronardo; Lucio Bonaccorsi; Yukitaka Kato; Elpida Piperopoulos; Maurizio Lanza; Candida Milone. 2016. "Thermochemical performance of carbon nanotubes based hybrid materials for MgO/H 2 O/Mg(OH) 2 chemical heat pumps." Applied Energy 181, no. : 232-243.
MgO/H2O/Mg(OH)2 chemical heat storage of waste energy from industrial processes is a promising technology in view of a more efficient use and saving of primary energy sources. A new approach was used to develop a hybrid heat storage material made of magnesium hydroxide (Mg(OH)2) and exfoliated graphite (which is used to improve the heat transfer with its high thermal conductivity). Mg(OH)2 nanoplatelets were directly grown on graphite surface via a deposition–precipitation method to increase the compatibility between the two materials. The material thus obtained, named DP-MG, was experimentally tested to determine its heat storage and output capacities. An improvement of the material efficiency was obtained with a higher storage capacity at lower reaction temperature and a higher heat output rate.
E. Mastronardo; L. Bonaccorsi; Y. Kato; E. Piperopoulos; C. Milone. Efficiency improvement of heat storage materials for MgO/H2O/Mg(OH)2 chemical heat pumps. Applied Energy 2016, 162, 31 -39.
AMA StyleE. Mastronardo, L. Bonaccorsi, Y. Kato, E. Piperopoulos, C. Milone. Efficiency improvement of heat storage materials for MgO/H2O/Mg(OH)2 chemical heat pumps. Applied Energy. 2016; 162 ():31-39.
Chicago/Turabian StyleE. Mastronardo; L. Bonaccorsi; Y. Kato; E. Piperopoulos; C. Milone. 2016. "Efficiency improvement of heat storage materials for MgO/H2O/Mg(OH)2 chemical heat pumps." Applied Energy 162, no. : 31-39.
Saveria Santangelo; Elpida Piperopoulos; Maurizio Lanza; Emanuela Mastronardo; Candida Milone. Synthesis of three-dimensional macro-porous networks of carbon nanotubes by chemical vapor deposition of methane on Co/Mo/Mg catalyst. Applied Catalysis A: General 2015, 505, 487 -493.
AMA StyleSaveria Santangelo, Elpida Piperopoulos, Maurizio Lanza, Emanuela Mastronardo, Candida Milone. Synthesis of three-dimensional macro-porous networks of carbon nanotubes by chemical vapor deposition of methane on Co/Mo/Mg catalyst. Applied Catalysis A: General. 2015; 505 ():487-493.
Chicago/Turabian StyleSaveria Santangelo; Elpida Piperopoulos; Maurizio Lanza; Emanuela Mastronardo; Candida Milone. 2015. "Synthesis of three-dimensional macro-porous networks of carbon nanotubes by chemical vapor deposition of methane on Co/Mo/Mg catalyst." Applied Catalysis A: General 505, no. : 487-493.