Reversible formation of alcohol solvates and their potential use for heat storage

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Reversible formation of alcohol solvates and their potential use for heat storage. / Korhammer, Kathrin; Mihály, Judith; Bálint, Szabolcs et al.

in: Journal of Thermal Analysis and Calorimetry, Jahrgang 138, Nr. 1, 01.10.2019, S. 11-33.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Korhammer K, Mihály J, Bálint S, Trif L, Vass Á, Tompos A et al. Reversible formation of alcohol solvates and their potential use for heat storage. Journal of Thermal Analysis and Calorimetry. 2019 Okt 1;138(1):11-33. Epub 2019 Mär 5. doi: 10.1007/s10973-019-08090-2

Bibtex

@article{44dd6e4590784d55ae8e6dd60190ee36,
title = "Reversible formation of alcohol solvates and their potential use for heat storage",
abstract = " In this study, CaCl 2 - and MgCl 2 –alcohol solvates of different stoichiometric quantities of ethyl alcohol (EtOH) and methyl alcohol (MeOH) were synthesized and characterized via coupled thermogravimetric–differential scanning calorimetry, thermogravimetric–mass spectrometric evolved gas analysis (TG-MS), spectroscopic analysis (Raman) methods as well as by X-ray diffraction. Correlations between the obtained calorimetric, thermodynamic, kinetic, and crystallographic data were carried out. The CaCl 2 –alcohol systems seem suitable for heat storage based on the feasible recovery of the salt. However, Raman spectroscopic results revealed that the MgCl 2 –EtOH solvates were instable compounds. Irreversible transformation of MgCl 2 –alcohol solvates related to the formation of alkyl chloride appeared upon heating, as proven by TG-MS and Raman spectroscopic measurements. Pure salt–alcohol solvates could not be prepared under technically applicable conditions. The samples contained at least traces of water. Appearance of side reactions resulting in magnesium oxychlorides, oxyhydroxides, and possible release of HCl with cycling may contribute to corrosion of reactor components. Based on these considerations, MgCl 2 –alcohol solvate systems are not recommended for heat storage. ",
keywords = "Alcohol solvates, Alkyl chloride formation, CaCl, Heat storage, MgCl, Energy research, Chemistry",
author = "Kathrin Korhammer and Judith Mih{\'a}ly and Szabolcs B{\'a}lint and L{\'a}szl{\'o} Trif and {\'A}d{\'a}m Vass and Andr{\'a}s Tompos and Em{\'i}lia T{\'a}las",
note = "Funding Information: Open access funding provided by MTA Research Centre for Natural Sciences (MTA TTK). Project no. T{\'E}T_12_DE-1-2013-0003 has been implemented with the support provided by the National Research, Development and Innovation Fund of Hungary, financed under the T{\'E}T_12_DE funding scheme. This study received funding from the German Federal Ministry of Education and Research (BMBF) within the framework of a bilateral research collaborative project between the Leuphana University of L{\"u}neburg and the Hungarian Academy of Sciences under grant agreement number 01DS14029. The authors thank Christina Apel for the preparation of salt–alcohol solvate samples. Publisher Copyright: {\textcopyright} 2019, The Author(s).",
year = "2019",
month = oct,
day = "1",
doi = "10.1007/s10973-019-08090-2",
language = "English",
volume = "138",
pages = "11--33",
journal = "Journal of Thermal Analysis and Calorimetry",
issn = "1388-6150",
publisher = "Springer Netherlands",
number = "1",

}

RIS

TY - JOUR

T1 - Reversible formation of alcohol solvates and their potential use for heat storage

AU - Korhammer, Kathrin

AU - Mihály, Judith

AU - Bálint, Szabolcs

AU - Trif, László

AU - Vass, Ádám

AU - Tompos, András

AU - Tálas, Emília

N1 - Funding Information: Open access funding provided by MTA Research Centre for Natural Sciences (MTA TTK). Project no. TÉT_12_DE-1-2013-0003 has been implemented with the support provided by the National Research, Development and Innovation Fund of Hungary, financed under the TÉT_12_DE funding scheme. This study received funding from the German Federal Ministry of Education and Research (BMBF) within the framework of a bilateral research collaborative project between the Leuphana University of Lüneburg and the Hungarian Academy of Sciences under grant agreement number 01DS14029. The authors thank Christina Apel for the preparation of salt–alcohol solvate samples. Publisher Copyright: © 2019, The Author(s).

PY - 2019/10/1

Y1 - 2019/10/1

N2 - In this study, CaCl 2 - and MgCl 2 –alcohol solvates of different stoichiometric quantities of ethyl alcohol (EtOH) and methyl alcohol (MeOH) were synthesized and characterized via coupled thermogravimetric–differential scanning calorimetry, thermogravimetric–mass spectrometric evolved gas analysis (TG-MS), spectroscopic analysis (Raman) methods as well as by X-ray diffraction. Correlations between the obtained calorimetric, thermodynamic, kinetic, and crystallographic data were carried out. The CaCl 2 –alcohol systems seem suitable for heat storage based on the feasible recovery of the salt. However, Raman spectroscopic results revealed that the MgCl 2 –EtOH solvates were instable compounds. Irreversible transformation of MgCl 2 –alcohol solvates related to the formation of alkyl chloride appeared upon heating, as proven by TG-MS and Raman spectroscopic measurements. Pure salt–alcohol solvates could not be prepared under technically applicable conditions. The samples contained at least traces of water. Appearance of side reactions resulting in magnesium oxychlorides, oxyhydroxides, and possible release of HCl with cycling may contribute to corrosion of reactor components. Based on these considerations, MgCl 2 –alcohol solvate systems are not recommended for heat storage.

AB - In this study, CaCl 2 - and MgCl 2 –alcohol solvates of different stoichiometric quantities of ethyl alcohol (EtOH) and methyl alcohol (MeOH) were synthesized and characterized via coupled thermogravimetric–differential scanning calorimetry, thermogravimetric–mass spectrometric evolved gas analysis (TG-MS), spectroscopic analysis (Raman) methods as well as by X-ray diffraction. Correlations between the obtained calorimetric, thermodynamic, kinetic, and crystallographic data were carried out. The CaCl 2 –alcohol systems seem suitable for heat storage based on the feasible recovery of the salt. However, Raman spectroscopic results revealed that the MgCl 2 –EtOH solvates were instable compounds. Irreversible transformation of MgCl 2 –alcohol solvates related to the formation of alkyl chloride appeared upon heating, as proven by TG-MS and Raman spectroscopic measurements. Pure salt–alcohol solvates could not be prepared under technically applicable conditions. The samples contained at least traces of water. Appearance of side reactions resulting in magnesium oxychlorides, oxyhydroxides, and possible release of HCl with cycling may contribute to corrosion of reactor components. Based on these considerations, MgCl 2 –alcohol solvate systems are not recommended for heat storage.

KW - Alcohol solvates

KW - Alkyl chloride formation

KW - CaCl

KW - Heat storage

KW - MgCl

KW - Energy research

KW - Chemistry

UR - http://www.scopus.com/inward/record.url?scp=85062716276&partnerID=8YFLogxK

U2 - 10.1007/s10973-019-08090-2

DO - 10.1007/s10973-019-08090-2

M3 - Journal articles

AN - SCOPUS:85062716276

VL - 138

SP - 11

EP - 33

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

SN - 1388-6150

IS - 1

ER -

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