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
N1 - Funding Information:
We gratefully acknowledge the financial support provided by `Research for the Future' Program (96P00401), The Japan Society for the Promotion of Science. H.U. is the Research Fellow of the Japan Society for the Promotion of Science (JSPS) for Young Scientists.
PY - 1998/2
Y1 - 1998/2
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.
UR - http://www.scopus.com/inward/record.url?scp=0032001682&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032001682&partnerID=8YFLogxK
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
T2 - Proceedings of the 1997 2nd International Symposium on Molecular Thermodynamics and Molecular Simulation, MTMS'97
Y2 - 12 January 1997 through 15 January 1997
ER -