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Thermal and Transport Properties of Molten Chloride Salts with Polarization Effect on Microstructure. ENERGIES 2021. [DOI: 10.3390/en14030746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Molten chloride salt is recognized as a promising heat transfer and storage medium in concentrating solar power in recent years, but there is a serious lack for thermal property data of molten chloride salts. In this work, local structures and thermal properties for molten chloride salt—including NaCl, MgCl2, and ZnCl2—were precisely simulated by Born–Mayer–Huggins (BMH) potential in a rigid ion model (RIM) and a polarizable ion model (PIM). Compared with experimental data, distances between cations, densities, and heat capacities of molten chloride slats calculated from PIM agree remarkably better than those from RIM. The polarization effect brings an extra contribution to screen large repulsive Coulombic interaction of cation–cation, and then it makes shorter distance between cations, larger density and lower heat capacity. For NaCl, MgCl2, and ZnCl2, PIM simulation deviations of distances between cations are respectively 3.8%, 3.7%, and 0.3%. The deviations of density and heat capacity for NaCl between PIM simulation and experiments are only 0.6% and 2.2%, and those for MgCl2 and ZnCl2 are 0.7–10.7%. As the temperature rises, the distance between cations increases and the structure turns into loose state, so the density and thermal conductivity decrease, while the ionic self-diffusion coefficient increases, which also agree well with the experimental results.
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Wu F, Sharma S, Roy S, Halstenberg P, Gallington LC, Mahurin SM, Dai S, Bryantsev VS, Ivanov AS, Margulis CJ. Temperature Dependence of Short and Intermediate Range Order in Molten MgCl2 and Its Mixture with KCl. J Phys Chem B 2020; 124:2892-2899. [DOI: 10.1021/acs.jpcb.0c00745] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Wu
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Shobha Sharma
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Phillip Halstenberg
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Leighanne C. Gallington
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Shannon M. Mahurin
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sheng Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S. Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Alexander S. Ivanov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Claudio J. Margulis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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Lucas P, Coleman GJ, Venkateswara Rao M, Edwards AN, Devaadithya C, Wei S, Alsayoud AQ, Potter BG, Muralidharan K, Deymier PA. Structure of ZnCl2 Melt. Part II: Fragile-to-Strong Transition in a Tetrahedral Liquid. J Phys Chem B 2017; 121:11210-11218. [DOI: 10.1021/acs.jpcb.7b10857] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre Lucas
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Garrett J. Coleman
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Manga Venkateswara Rao
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Angharad N. Edwards
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Chrishani Devaadithya
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Shuai Wei
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Abduljabar Q. Alsayoud
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - B. G. Potter
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Krishna Muralidharan
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Pierre A. Deymier
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
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Alsayoud AQ, Venkateswara Rao M, Edwards AN, Deymier PA, Muralidharan K, Potter BG, Runge K, Lucas P. Structure of ZnCl2 Melt. Part I: Raman Spectroscopy Analysis Driven by Ab Initio Methods. J Phys Chem B 2016; 120:4174-81. [DOI: 10.1021/acs.jpcb.6b02452] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abduljabar Q. Alsayoud
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Manga Venkateswara Rao
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Angharad N. Edwards
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Pierre A. Deymier
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Krishna Muralidharan
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - B. G. Potter
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Keith Runge
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Pierre Lucas
- Department of Materials Science
and Engineering, University of Arizona, Tucson, Arizona 85721, United States
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Rollet AL, Salanne M. Studies of the local structures of molten metal halides. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1pc90003j] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Magazú S, Maisano G, Mallamace F, Migliardo P, Aliotta F, Vasi C. Slow relaxation processes in molten ZnCl2studied by photon correlation spectroscopy. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/13642818708208522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Magazú
- a Istituto di Fisica dell , Università , and CISM-GNSM del CNR, Via Dei Verdi, 98100 , Messina , Italy
| | - G. Maisano
- a Istituto di Fisica dell , Università , and CISM-GNSM del CNR, Via Dei Verdi, 98100 , Messina , Italy
| | - F. Mallamace
- a Istituto di Fisica dell , Università , and CISM-GNSM del CNR, Via Dei Verdi, 98100 , Messina , Italy
| | - P. Migliardo
- a Istituto di Fisica dell , Università , and CISM-GNSM del CNR, Via Dei Verdi, 98100 , Messina , Italy
| | - F. Aliotta
- a Istituto di Fisica dell , Università , and CISM-GNSM del CNR, Via Dei Verdi, 98100 , Messina , Italy
| | - C. Vasi
- b Istituto di Tecniche Spettroscopiche , del CNR, Via Dei Verdi, 98100 , Messina , Italy
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Abstract
The three-dimensional structures of thirteen MX and MX
2
molten salts (M, metal; X, halide) have been modelled from neutron diffraction data by using the Reverse Monte Carlo method. Although the structures are highly disordered the dominant structural symmetries of the short-range order can be determined by using bond angle correlations and spherical harmonic invariants. It is found that cations in the alkali chlorides tend to be octahedrally coordinated by anions (and vice versa), although the large number of ‘vacancies’ leads to coordination numbers lower than six. CuCl has a tetrahedral coordination of anions about cations. In MX
2
melts small cations are octahedrally coordinated except in ZnCl
2
where the coordination is tetrahedral. As the cation size increases the coordination tends to cubic. In all cases the local structural symmetries in the melt are similar to those in the corresponding crystals. It is shown that the ‘pre-peak’ which occurs in the partial structure factor
A
MM
(
Q
) for MX
2
melts with small cations, and which has been associated with intermediate range ordering, arises from a local density fluctuation due to cation ‘clustering’. This is the first time that a visual picture of such intermediate-range order has been obtained.
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W. Neilson G, K. Adya A. Chapter 4. Neutron diffraction studies on liquids. ACTA ACUST UNITED AC 1997. [DOI: 10.1039/pc093101] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ferrante A, Li W, Tosi MP. Interatomic force modelling of local coordination and extended structure in ionic-covalent liquids. ACTA ACUST UNITED AC 1988. [DOI: 10.1080/01418618808205171] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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