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Yizhak Marcus - One of the best experts on this subject based on the ideXlab platform.
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The fluidity of Molten Salts re-examined
Fluid Phase Equilibria, 2014Co-Authors: Yizhak MarcusAbstract:Abstract The fluidity, Φ, of Molten Salts is re-examined with critically compiled data applicable to 75 Salts of various charge types. Various theoretical approaches, based on the corresponding states principle applicable to Molten Salts, are briefly presented. They are compared with the much simpler approach of Hildebrand and Lamoreaux: Φ = −B + (B/V0)V that relates the (temperature dependent) fluidity to the (temperature dependent) molar volume V of the Molten salt. This approach yields at the corresponding temperature of 1.1 Tm the B parameters that are linearly related to the cohesive energy and the V0 parameters that are 87% of the molar volume, signifying the absence of free volume.
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CHAPTER 20:Volumetric Behaviour of Molten Salts and Molten Salt Hydrates
Volume Properties, 2014Co-Authors: Yizhak MarcusAbstract:The volumetric behaviour of Molten Salts and salt hydrates depends on their measured densities as functions of the temperature at ambient pressure. Ultrasound velocities are also needed for obtaining compressibility data. The methodology employed for these measurements, as it is applicable at elevated temperatures, is briefly described. The densities, expansibilities, compressibilities, and molar volumes of Molten Salts are compiled and presented in extensive tables. The internal pressures of Molten Salts, deduced from these data, are presented. Correlations of these quantities with other properties of the Salts, such as the sizes of the ionic constituents and the cohesive energies of the Salts, are described. In the case of Molten salt hydrates the molar volumes of the melts are discussed in terms of the electrostriction of the water.
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surface tension and cohesive energy density of Molten Salts
Thermochimica Acta, 2013Co-Authors: Yizhak MarcusAbstract:Abstract The surface tensions σ of a large number of Molten Salts are known as (decreasing) linear functions of the temperature. They may be compared at a so-called “corresponding temperature”, of which 1.1Tm is a good choice (Tm/K is the melting temperature). It is shown that for highly ionic Molten Salts of the 1:1, 1:2, and 2:1 charge types σ is a linear function of the cohesive energy density, ced. Molten Salts with pronounced partial covalent bonding have generally much smaller surface tension values than highly ionic ones having similar values of the ced. The correlation between σ and ced is rationalized and compared with correlations in the literature, but the latter pertain only to the alkali metal halides.
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The compressibility and surface tension product of Molten Salts.
The Journal of chemical physics, 2013Co-Authors: Yizhak MarcusAbstract:Products of the isothermal compressibility, κT, and the surface tension, σ, that have been discussed in the literature for liquids in general are shown for over 60 Molten Salts. The applications of the scaled particle theory of Mayer and the simplified corresponding states correlation of Harada et al. [Ind. Eng. Chem. Fund. 22, 116 (1983)] lead to calculated values twice as large as the experimental ones. Separate correlations in this paper of κT and of σ with the cohesive energy density lead to κTσ products that are commensurate with the experimental values for many of the Molten Salts, beyond the few 1:1 Molten Salts that have been dealt with previously.
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Volumetric behavior of Molten Salts
Thermochimica Acta, 2013Co-Authors: Yizhak MarcusAbstract:Abstract The molar volumes of Molten Salts, obtained from densities reported in the literature and compared at the corresponding temperatures 1.1 T m , are correlated with individual ionic properties. For symmetrical (1:1) Salts individual ionic molar volumes can be deduced, but for unsymmetrical (1:2 and 2:1) Salts the quasi-lattice vacancies preclude this, but relations with the ionic radii could be established. The expansibilities of the Molten Salts depend inversely on their cohesive energies, irrespective of the class of ions, provided they are highly ionic.
S. Sánchez-delgado - One of the best experts on this subject based on the ideXlab platform.
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Thermochemical conversion of C. cardunculus L. in nitrate Molten Salts
Applied Thermal Engineering, 2019Co-Authors: Daniel Serrano, Cristina Sobrino, Alen Horvat, S. Sánchez-delgadoAbstract:Abstract The use of a binary mixture of solar Molten Salts (60 wt% NaNO3 and 40 wt% KNO3) as a heat transfer medium for the production of a solar fuel by the thermochemical conversion of biomass is investigated in the present paper. Thermochemical conversion can be a route for converting the surplus solar irradiation via the direct contact of nitrate Molten Salts and biomass into storable chemical fuel. Traditional fixed-bed pyrolysis and Molten Salts pyrolysis have been carried out under an inert atmosphere at a temperature of 500 °C. The composition of the permanent gases and the bio-oil produced has been analyzed along with the temperature profiles inside the reactor. Two distinctive pathways have been observed: an endothermic process in the case of traditional fixed-bed pyrolysis and an exothermic process in the case of Molten salt pyrolysis. An attempt has been made to identify possible causes for such differences.
Daniel Serrano - One of the best experts on this subject based on the ideXlab platform.
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Thermochemical conversion of C. cardunculus L. in nitrate Molten Salts
Applied Thermal Engineering, 2019Co-Authors: Daniel Serrano, Cristina Sobrino, Alen Horvat, S. Sánchez-delgadoAbstract:Abstract The use of a binary mixture of solar Molten Salts (60 wt% NaNO3 and 40 wt% KNO3) as a heat transfer medium for the production of a solar fuel by the thermochemical conversion of biomass is investigated in the present paper. Thermochemical conversion can be a route for converting the surplus solar irradiation via the direct contact of nitrate Molten Salts and biomass into storable chemical fuel. Traditional fixed-bed pyrolysis and Molten Salts pyrolysis have been carried out under an inert atmosphere at a temperature of 500 °C. The composition of the permanent gases and the bio-oil produced has been analyzed along with the temperature profiles inside the reactor. Two distinctive pathways have been observed: an endothermic process in the case of traditional fixed-bed pyrolysis and an exothermic process in the case of Molten salt pyrolysis. An attempt has been made to identify possible causes for such differences.
H. H. Wills - One of the best experts on this subject based on the ideXlab platform.
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The surface properties of Molten Salts
Lecture Notes in Physics, 1Co-Authors: R. Evans, H. H. WillsAbstract:We review recent theoretical work on the structure and surface tension of the liquid-vapour interface of Molten Salts.
Qiang Wang - One of the best experts on this subject based on the ideXlab platform.
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Molten Salts modified mgo based adsorbents for intermediate temperature co2 capture a review
Journal of Energy Chemistry, 2017Co-Authors: Tuantuan Zhou, Benoit Louis, Dermot Ohare, Qiang WangAbstract:Abstract Carbon dioxide (CO 2 ) capture using magnesium oxide (MgO)-based adsorbents at intermediate temperatures has been regarded as a very prospective technology for their relatively high adsorption capacity, low cost, and wide availability. During the past few years, great effort has been devoted to the fabrication of Molten Salts-modified MgO-based adsorbents. The extraordinary progress achieved by coating with Molten Salts greatly promotes the CO 2 capture capacity of MgO-based adsorbents. Therefore, we feel it necessary to deliver a timely review on this type of CO 2 capturing materials, which will benefit the researchers working in both academic and industrial areas. In this work, we classified the Molten Salts-modified MgO adsorbents into four categories: (1) homogenous Molten salt-modified MgO adsorbents, (2) Molten salt-modified double Salts-based MgO adsorbents, (3) mixed Molten Salts-modified MgO adsorbents, and (4) Molten Salts-modified MgO-based mixed oxides adsorbents. This contribution critically reviews the recent developments in the synthetic method, adsorption capacity, reaction kinetics, promotion mechanism, operational conditions and regenerability of the Molten Salts-modified MgO CO 2 adsorbents. The challenges and prospects in this promising field of Molten Salts-modified MgO CO 2 adsorbents in real applications are also briefly mentioned.
