Phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate

Yuji Yamauchi; Yuta Arai; Tatsuro Yamasaki; Fuyuaki Endo; Atsushi Hotta; Ryo Ohmura

doi:10.1016/j.fluid.2017.02.001

Phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate

Yuji Yamauchi, Yuta Arai, Tatsuro Yamasaki, Fuyuaki Endo, Atsushi Hotta, Ryo Ohmura

Department of Mechanical Engineering

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

20 Citations (Scopus)

Abstract

This paper reports the phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate (TBABu). The temperature – composition phase diagram of the TBABu hydrate was determined in the mass fraction from 0.10 to 0.44. The highest equilibrium temperature of TBABu hydrate was 15.4 °C in the mass fraction range from 0.35 to 0.37. On the dissociation heat of DSC measurements, a single heat flow peak of TBABu hydrate excluding ice melting peak was observed at all the mass fraction systems. The largest dissociation heat was 184.9 ± 3.1 kJ/kg at the mass fraction 0.36. TBABu hydrate could potentially be used as a thermal energy storage material.

Original language	English
Pages (from-to)	54-58
Number of pages	5
Journal	Fluid Phase Equilibria
Volume	441
DOIs	https://doi.org/10.1016/j.fluid.2017.02.001
Publication status	Published - 2017 Jun 15

Keywords

Clathrate hydrate
Dissociation heat
Ionic semiclathrate hydrate
Phase equilibria
Tetrabutylammonium butyrate

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.fluid.2017.02.001

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title = "Phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate",

abstract = "This paper reports the phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate (TBABu). The temperature – composition phase diagram of the TBABu hydrate was determined in the mass fraction from 0.10 to 0.44. The highest equilibrium temperature of TBABu hydrate was 15.4 °C in the mass fraction range from 0.35 to 0.37. On the dissociation heat of DSC measurements, a single heat flow peak of TBABu hydrate excluding ice melting peak was observed at all the mass fraction systems. The largest dissociation heat was 184.9 ± 3.1 kJ/kg at the mass fraction 0.36. TBABu hydrate could potentially be used as a thermal energy storage material.",

keywords = "Clathrate hydrate, Dissociation heat, Ionic semiclathrate hydrate, Phase equilibria, Tetrabutylammonium butyrate",

author = "Yuji Yamauchi and Yuta Arai and Tatsuro Yamasaki and Fuyuaki Endo and Atsushi Hotta and Ryo Ohmura",

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T1 - Phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate

AU - Yamauchi, Yuji

AU - Arai, Yuta

AU - Yamasaki, Tatsuro

AU - Endo, Fuyuaki

AU - Hotta, Atsushi

AU - Ohmura, Ryo

PY - 2017/6/15

Y1 - 2017/6/15

N2 - This paper reports the phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate (TBABu). The temperature – composition phase diagram of the TBABu hydrate was determined in the mass fraction from 0.10 to 0.44. The highest equilibrium temperature of TBABu hydrate was 15.4 °C in the mass fraction range from 0.35 to 0.37. On the dissociation heat of DSC measurements, a single heat flow peak of TBABu hydrate excluding ice melting peak was observed at all the mass fraction systems. The largest dissociation heat was 184.9 ± 3.1 kJ/kg at the mass fraction 0.36. TBABu hydrate could potentially be used as a thermal energy storage material.

AB - This paper reports the phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate (TBABu). The temperature – composition phase diagram of the TBABu hydrate was determined in the mass fraction from 0.10 to 0.44. The highest equilibrium temperature of TBABu hydrate was 15.4 °C in the mass fraction range from 0.35 to 0.37. On the dissociation heat of DSC measurements, a single heat flow peak of TBABu hydrate excluding ice melting peak was observed at all the mass fraction systems. The largest dissociation heat was 184.9 ± 3.1 kJ/kg at the mass fraction 0.36. TBABu hydrate could potentially be used as a thermal energy storage material.

KW - Clathrate hydrate

KW - Dissociation heat

KW - Ionic semiclathrate hydrate

KW - Phase equilibria

KW - Tetrabutylammonium butyrate

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DO - 10.1016/j.fluid.2017.02.001

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SP - 54

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JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Phase equilibrium temperature and dissociation heat of ionic semiclathrate hydrate formed with tetrabutylammonium butyrate

Abstract

Keywords

ASJC Scopus subject areas

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