Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe4(acac)6(Br-mp)2] for pervaporative dehydration of ethanol

Łukasz Jakubski; Paweł Grzybek; Artur Chrobak; Emile Haye; Jean François Colomer; Krystyna Konieczny; Roman Turczyn; Gabriela Dudek

doi:10.1016/j.seppur.2021.119038

Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol

Łukasz Jakubski, Paweł Grzybek, Artur Chrobak, Emile Haye, Jean François Colomer, Krystyna Konieczny, Roman Turczyn, Gabriela Dudek

University of Namur

Research output: Contribution to journal › Article › peer-review

Abstract

To improve the process of ethanol dehydration via pervaporation, a molecular magnet [Fe₄(acac)₆(Br-mp)₂] was synthesized and applied as a filler for hybrid alginate membranes and compared with membranes loaded with magnetite and Prussian blue. Synthesized powders and membranes were comprehensively characterized by means of FTIR spectroscopy, contact angle, degree of swelling, electron microscopy and magnetometry, to provide an extensive analysis of their physicochemical and magnetic properties. The results showed a strong correlation between filler properties and separation effectiveness, particularly flux. Consequently, the highest value of flux (25.46 kg∙m⁻²∙h⁻¹) was achieved by an alginate membrane filled with magnetite. On the other hand, the value of separation factor was found to be the most beneficial in the case of membranes loaded with Prussian blue and a molecular magnet, which was associated with the hydrophilicity of the fillers, their compatibility and good distribution in a polymer matrix. Therefore, the most favourable results were obtained for alginate membranes containing 12 and 15 wt% of [Fe₄(acac)₆(Br-mp)₂], where pervaporation separation index reached the value of 1261 and 1275 kg∙m⁻²∙h⁻¹, respectively.

Original language	English
Article number	119038
Journal	Separation and purification Technology
Volume	277
Early online date	29 May 2021
DOIs	https://doi.org/10.1016/j.seppur.2021.119038
Publication status	Published - 15 Dec 2021

Keywords

Ethanol dehydration
Hybrid membrane
Magnetite
Pervaporation
Prussian blue
Single-molecule magnet
Sodium alginate

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10.1016/j.seppur.2021.119038

Cite this

Jakubski, Ł., Grzybek, P., Chrobak, A., Haye, E., Colomer, J. F., Konieczny, K., Turczyn, R., & Dudek, G. (2021). Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol. Separation and purification Technology, 277, Article 119038. https://doi.org/10.1016/j.seppur.2021.119038

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title = "Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe4(acac)6(Br-mp)2] for pervaporative dehydration of ethanol",

abstract = "To improve the process of ethanol dehydration via pervaporation, a molecular magnet [Fe4(acac)6(Br-mp)2] was synthesized and applied as a filler for hybrid alginate membranes and compared with membranes loaded with magnetite and Prussian blue. Synthesized powders and membranes were comprehensively characterized by means of FTIR spectroscopy, contact angle, degree of swelling, electron microscopy and magnetometry, to provide an extensive analysis of their physicochemical and magnetic properties. The results showed a strong correlation between filler properties and separation effectiveness, particularly flux. Consequently, the highest value of flux (25.46 kg∙m−2∙h−1) was achieved by an alginate membrane filled with magnetite. On the other hand, the value of separation factor was found to be the most beneficial in the case of membranes loaded with Prussian blue and a molecular magnet, which was associated with the hydrophilicity of the fillers, their compatibility and good distribution in a polymer matrix. Therefore, the most favourable results were obtained for alginate membranes containing 12 and 15 wt% of [Fe4(acac)6(Br-mp)2], where pervaporation separation index reached the value of 1261 and 1275 kg∙m−2∙h−1, respectively.",

keywords = "Ethanol dehydration, Hybrid membrane, Magnetite, Pervaporation, Prussian blue, Single-molecule magnet, Sodium alginate",

author = "{\L}ukasz Jakubski and Pawe{\l} Grzybek and Artur Chrobak and Emile Haye and Colomer, {Jean Fran{\c c}ois} and Krystyna Konieczny and Roman Turczyn and Gabriela Dudek",

note = "Funding Information: G.D. & R.T. would like to thank the Silesian University of Technology for the partial financial support under the projects no 04/040/BK_21/0145 and G.D. would like to thanks The National Centre for Research and Development and Silesian University of Technology for providing partial financial support under the project no 2018/02/X/ST8/00309 and 04/040/RGJ21/0150, respectively. JFC is a Senior Research associate of the National Funds for Scientific Research (FRS-FNRS, Belgium). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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doi = "10.1016/j.seppur.2021.119038",

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Jakubski, Ł, Grzybek, P, Chrobak, A, Haye, E , Colomer, JF, Konieczny, K, Turczyn, R & Dudek, G 2021, 'Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol', Separation and purification Technology, vol. 277, 119038. https://doi.org/10.1016/j.seppur.2021.119038

Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol. / Jakubski, Łukasz; Grzybek, Paweł; Chrobak, Artur et al.
In: Separation and purification Technology, Vol. 277, 119038, 15.12.2021.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe4(acac)6(Br-mp)2] for pervaporative dehydration of ethanol

AU - Jakubski, Łukasz

AU - Grzybek, Paweł

AU - Chrobak, Artur

AU - Haye, Emile

AU - Colomer, Jean François

AU - Konieczny, Krystyna

AU - Turczyn, Roman

AU - Dudek, Gabriela

N1 - Funding Information: G.D. & R.T. would like to thank the Silesian University of Technology for the partial financial support under the projects no 04/040/BK_21/0145 and G.D. would like to thanks The National Centre for Research and Development and Silesian University of Technology for providing partial financial support under the project no 2018/02/X/ST8/00309 and 04/040/RGJ21/0150, respectively. JFC is a Senior Research associate of the National Funds for Scientific Research (FRS-FNRS, Belgium). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/12/15

Y1 - 2021/12/15

N2 - To improve the process of ethanol dehydration via pervaporation, a molecular magnet [Fe4(acac)6(Br-mp)2] was synthesized and applied as a filler for hybrid alginate membranes and compared with membranes loaded with magnetite and Prussian blue. Synthesized powders and membranes were comprehensively characterized by means of FTIR spectroscopy, contact angle, degree of swelling, electron microscopy and magnetometry, to provide an extensive analysis of their physicochemical and magnetic properties. The results showed a strong correlation between filler properties and separation effectiveness, particularly flux. Consequently, the highest value of flux (25.46 kg∙m−2∙h−1) was achieved by an alginate membrane filled with magnetite. On the other hand, the value of separation factor was found to be the most beneficial in the case of membranes loaded with Prussian blue and a molecular magnet, which was associated with the hydrophilicity of the fillers, their compatibility and good distribution in a polymer matrix. Therefore, the most favourable results were obtained for alginate membranes containing 12 and 15 wt% of [Fe4(acac)6(Br-mp)2], where pervaporation separation index reached the value of 1261 and 1275 kg∙m−2∙h−1, respectively.

AB - To improve the process of ethanol dehydration via pervaporation, a molecular magnet [Fe4(acac)6(Br-mp)2] was synthesized and applied as a filler for hybrid alginate membranes and compared with membranes loaded with magnetite and Prussian blue. Synthesized powders and membranes were comprehensively characterized by means of FTIR spectroscopy, contact angle, degree of swelling, electron microscopy and magnetometry, to provide an extensive analysis of their physicochemical and magnetic properties. The results showed a strong correlation between filler properties and separation effectiveness, particularly flux. Consequently, the highest value of flux (25.46 kg∙m−2∙h−1) was achieved by an alginate membrane filled with magnetite. On the other hand, the value of separation factor was found to be the most beneficial in the case of membranes loaded with Prussian blue and a molecular magnet, which was associated with the hydrophilicity of the fillers, their compatibility and good distribution in a polymer matrix. Therefore, the most favourable results were obtained for alginate membranes containing 12 and 15 wt% of [Fe4(acac)6(Br-mp)2], where pervaporation separation index reached the value of 1261 and 1275 kg∙m−2∙h−1, respectively.

KW - Ethanol dehydration

KW - Hybrid membrane

KW - Magnetite

KW - Pervaporation

KW - Prussian blue

KW - Single-molecule magnet

KW - Sodium alginate

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DO - 10.1016/j.seppur.2021.119038

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JO - Separation and purification Technology

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Jakubski Ł, Grzybek P, Chrobak A, Haye E , Colomer JF, Konieczny K et al. Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol. Separation and purification Technology. 2021 Dec 15;277:119038. Epub 2021 May 29. doi: 10.1016/j.seppur.2021.119038

Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol

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Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe4(acac)6(Br-mp)2] for pervaporative dehydration of ethanol

Abstract

Keywords

Access to Document

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Morphology - Imaging

Cite this

Single-molecule magnets as novel fillers with superior dispersibility – First application of a tetranuclear iron(III) molecular magnet [Fe₄(acac)₆(Br-mp)₂] for pervaporative dehydration of ethanol