Abstract
A new experimental apparatus based on a pseudo-steady state solid dissolution method has been designed to measure the diffusion coefficients of supercritical carbon dioxide(1)-naphthalene(2) and supercritical carbon dioxide(1)-dimethylnaphthalene isomers(2) systems. The diffusion coefficients were measured at 308.2 K. In order to establish the validity of this method and the performance of the apparatus, the experimental results of the diffusion coefficients of naphthalene in supercritical carbon dioxide were compared with the literature data measured by other methods. The decrease of diffusion coefficient of naphthalene was observed near the critical point of carbon dioxide. The diffusion coefficients of 2,6-dimethylnaphthalene (2,6-DMN) and 2,7-dimethylnaphthalene (2,7-DMN) show almost the same values. The diffusion coefficients of these isomers are about 10% lower than those of naphthalene.
| Original language | English |
|---|---|
| Pages (from-to) | 269-278 |
| Number of pages | 10 |
| Journal | Fluid Phase Equilibria |
| Volume | 144 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Feb 1 1998 |
| Event | Proceedings of the 1997 2nd International Symposium on Molecular Thermodynamics and Molecular Simulation, MTMS'97 - Tokyo, Jpn Duration: Jan 12 1997 → Jan 15 1997 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
Diffusion coefficients of naphthalene and dimethylnaphthalene in supercritical carbon dioxide. / Higashi, Hidenori; Iwai, Yoshio; Takahashi, Yuichi; Uchida, Hirohisa; Arai, Yasuhiko.
In: Fluid Phase Equilibria, Vol. 144, No. 1-2, 01.02.1998, p. 269-278.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Diffusion coefficients of naphthalene and dimethylnaphthalene in supercritical carbon dioxide
AU - Higashi, Hidenori
AU - Iwai, Yoshio
AU - Takahashi, Yuichi
AU - Uchida, Hirohisa
AU - Arai, Yasuhiko
PY - 1998/2/1
Y1 - 1998/2/1
N2 - A new experimental apparatus based on a pseudo-steady state solid dissolution method has been designed to measure the diffusion coefficients of supercritical carbon dioxide(1)-naphthalene(2) and supercritical carbon dioxide(1)-dimethylnaphthalene isomers(2) systems. The diffusion coefficients were measured at 308.2 K. In order to establish the validity of this method and the performance of the apparatus, the experimental results of the diffusion coefficients of naphthalene in supercritical carbon dioxide were compared with the literature data measured by other methods. The decrease of diffusion coefficient of naphthalene was observed near the critical point of carbon dioxide. The diffusion coefficients of 2,6-dimethylnaphthalene (2,6-DMN) and 2,7-dimethylnaphthalene (2,7-DMN) show almost the same values. The diffusion coefficients of these isomers are about 10% lower than those of naphthalene.
AB - A new experimental apparatus based on a pseudo-steady state solid dissolution method has been designed to measure the diffusion coefficients of supercritical carbon dioxide(1)-naphthalene(2) and supercritical carbon dioxide(1)-dimethylnaphthalene isomers(2) systems. The diffusion coefficients were measured at 308.2 K. In order to establish the validity of this method and the performance of the apparatus, the experimental results of the diffusion coefficients of naphthalene in supercritical carbon dioxide were compared with the literature data measured by other methods. The decrease of diffusion coefficient of naphthalene was observed near the critical point of carbon dioxide. The diffusion coefficients of 2,6-dimethylnaphthalene (2,6-DMN) and 2,7-dimethylnaphthalene (2,7-DMN) show almost the same values. The diffusion coefficients of these isomers are about 10% lower than those of naphthalene.
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U2 - 10.1016/S0378-3812(97)00265-3
DO - 10.1016/S0378-3812(97)00265-3
M3 - Conference article
AN - SCOPUS:0032001682
VL - 144
SP - 269
EP - 278
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
SN - 0378-3812
IS - 1-2
ER -