Diffusion coefficients of naphthalene and dimethylnaphthalene in supercritical carbon dioxide

Hidenori Higashi, Yoshio Iwai, Yuichi Takahashi, Hirohisa Uchida, Yasuhiko Arai

研究成果: Contribution to journalConference article査読

41 被引用数 (Scopus)


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.

ジャーナルFluid Phase Equilibria
出版ステータス出版済み - 2 1998
イベントProceedings of the 1997 2nd International Symposium on Molecular Thermodynamics and Molecular Simulation, MTMS'97 - Tokyo, Jpn
継続期間: 1 12 19971 15 1997

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 物理学および天文学(全般)
  • 物理化学および理論化学


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