Infrared spectra and characteristic structural features of the hydrates of magnesium chloride

Гуревич, Л. М.; Rommel, I. F.; Polyakov, Yu. A.

doi:10.1007/bf00746107

Cited by 6 publications

(8 citation statements)

References 4 publications

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“…We synthesized six magnesium chloride hydrates, MgCl 2 •nH 2 O (n = 1, 2, 4, 6, 8,12), using the methods (Table S1) described by previous literatures. [15,21,22] The starting phase is an analytical reagent grade (≥98.0%)…”

Section: Synthesis Of Magnesium Chloride With Six Hydration Degreesmentioning

confidence: 99%

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MIR, VNIR, NIR, and Raman spectra of magnesium chlorides with six hydration degrees: Implication for Mars and Europa

Shi

Wang

Ling

2019

J Raman Spectroscopy

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Chloride salts have been identified on the surface of Mars and Europa based on the results from the two soil samples analyzed by Phoenix's wet chemistry laboratory for Mars, as well as some interpretations of the data from the remote sensing for Mars and Europa. To help elucidate our understanding of Mars' and Europa's surface mineral composition and relevant environmental conditions, we studied a series of magnesium chlorides with all six hydration degrees that were synthesized using various laboratory conditions. The identifications of synthesized magnesium chloride hydrates were confirmed using X‐ray diffraction. We took a systematic study of the Raman, mid‐infrared (MIR), visible near‐infrared (VNIR), and near‐infrared (NIR) spectroscopies. We found various spectral features that can be linked to the structural characters of H2O molecules in the six crystal structures. On the basis of those knowledge, we found several trends of spectral feature variations that follow the increase of hydration degree of these magnesium chlorides, which can be used to distinguish them during the planetary exploration missions using the Raman, MIR, NIR, and VNIR spectroscopic techniques. Our data will not only fill the gap in the libraries of planetary spectroscopy but also contribute to the interpretation of Mars' and Europa's current and future exploration data. Specifically, identifying the types of Cl salts (hydrous or anhydrous) within geological context at the surface of Mars and Europa will constrain the current and past processes that they experienced, which can help in understanding the evolutions of these planetary bodies.

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Section: Synthesis Of Magnesium Chloride With Six Hydration Degreesmentioning

confidence: 99%

“…In this work, we synthesized six magnesium chlorides with different hydration degrees, MgCl 2 •nH 2 O (n = 1, 2, 4, 6, 8, 12), using heating, humidity buffer, and low temperature crystallization methods, [15,21,22] using X-ray diffraction (XRD) to confirm the identification of…”

mentioning

confidence: 99%

MIR, VNIR, NIR, and Raman spectra of magnesium chlorides with six hydration degrees: Implication for Mars and Europa

Shi

Wang

Ling

2019

J Raman Spectroscopy

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“…Heat storage or release occurs when the degree of hydration of a crystal is decreased or increased, respectively. MgCl 2 can incorporate various amounts of water in its crystal lattice, depending on temperature and the water vapour pressure (n=0, 1,2,4,6,8,12). In case of MgCl 2…”

Section: Introductionmentioning

confidence: 99%

Elucidating water dynamics in MgCl 2 hydrates from molecular dynamics simulation

Huinink

Zahn

2017

Solid State Sciences

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“…Several hydrates phases of MgCl 2 have been reported (n=0, 1,2,4,6,8,12) that are stable at different combinations of temperature and water vapour pressure 4,5,6 . At room temperature and at significant water vapour pressure, the most stable phase is the hexahydrate (n=6).…”

Section: Introductionmentioning

confidence: 99%

“…Despite the fact that many experimental studies on the water mobility in hydrates have been reported, all of them focus on local motions (rotations, vibrations, etc.) with techniques like NMR 9,10,11 or IR/Raman techniques 12 . The potential of Molecular Dynamics (MD) simulations have hardly been used for mechanistic studies of water hopping in salt hydrates.…”

Section: Introductionmentioning

confidence: 99%

Defect-driven water migration in MgCl2 tetra- and hexahydrates

Huinink

Sansotta

Zahn

2019

Journal of Solid State Chemistry

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Infrared spectra and characteristic structural features of the hydrates of magnesium chloride

Cited by 6 publications

References 4 publications

MIR, VNIR, NIR, and Raman spectra of magnesium chlorides with six hydration degrees: Implication for Mars and Europa

MIR, VNIR, NIR, and Raman spectra of magnesium chlorides with six hydration degrees: Implication for Mars and Europa

Elucidating water dynamics in MgCl 2 hydrates from molecular dynamics simulation

Defect-driven water migration in MgCl2 tetra- and hexahydrates

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