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Article

Study on Physicochemical and Thermal Properties of Tetrabutylammonium-Based Cation Ionic Salts Induced by Al2O3 Additive for Thermal Energy Storage Application

1
Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
2
Department of Chemistry, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia
3
School of Architecture, Planning and Policy Development, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
*
Author to whom correspondence should be addressed.
Inorganics 2020, 8(9), 51; https://doi.org/10.3390/inorganics8090051
Received: 22 August 2020 / Revised: 9 September 2020 / Accepted: 16 September 2020 / Published: 18 September 2020
(This article belongs to the Section Inorganic Solid-State Chemistry)
The physicochemical and thermal properties of tetrabutylammonium bromide (TBA-Br) and tetrabutylammonium hexafluorophosphate (TBA-PF6), and their change with the addition of Al2O3, were investigated using infrared (IR) spectroscopy and by simultaneously conducting thermal thermogravimetric (TG) analysis and differential thermal analysis (DTA) to obtain the differential scanning calorimetry (DSC) thermogram. The change in the IR data is characterized by the growth of a large peak in the range of 3500 cm−1 and the reduction of peaks below 1000 cm−1 with the additive concentration. The decomposition temperature determined from the peak in the DTG curve is nearly constant for TBA-Br, and it decreases with the addition of Al2O3 for TBA-PF6, although it does not depend on the concentration of the additives. The DTA curve of ionic salts with the addition of Al2O3 shows additional peaks, which indicates a change in the sample’s temperature at disorder or phase transitions. The variation in the melting temperature with additive concentration is similar to that of decomposition temperature. The maximum heat of fusion value was approximately 67 kJ kg−1 for the doped TBA-Br and TBA-PF6 but was achieved at a different additive concentration. This is due to the additional disorder in the system induced by the dissolution of Al2O3. View Full-Text
Keywords: tetrabutylamonium bromide; tetrabutylamonium hexafluorophosphate; aluminium oxide additive; infrared (IR); decomposition and melting temperature; heat of fusion tetrabutylamonium bromide; tetrabutylamonium hexafluorophosphate; aluminium oxide additive; infrared (IR); decomposition and melting temperature; heat of fusion
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MDPI and ACS Style

Sutjahja, I.M.; Wonorahardjo, S.; Wonorahardjo, S. Study on Physicochemical and Thermal Properties of Tetrabutylammonium-Based Cation Ionic Salts Induced by Al2O3 Additive for Thermal Energy Storage Application. Inorganics 2020, 8, 51. https://doi.org/10.3390/inorganics8090051

AMA Style

Sutjahja IM, Wonorahardjo S, Wonorahardjo S. Study on Physicochemical and Thermal Properties of Tetrabutylammonium-Based Cation Ionic Salts Induced by Al2O3 Additive for Thermal Energy Storage Application. Inorganics. 2020; 8(9):51. https://doi.org/10.3390/inorganics8090051

Chicago/Turabian Style

Sutjahja, Inge M.; Wonorahardjo, Surjani; Wonorahardjo, Surjamanto. 2020. "Study on Physicochemical and Thermal Properties of Tetrabutylammonium-Based Cation Ionic Salts Induced by Al2O3 Additive for Thermal Energy Storage Application" Inorganics 8, no. 9: 51. https://doi.org/10.3390/inorganics8090051

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