A New Method to Investigate the Clustering Phenomena in Supercritical Fluids  

作　　者：Lu, J Huo, Q Han, BX Yan, HK 

机构地区：[1]Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China [2]Beijing Union Univ, Chem Engn Coll, Dept Chem Engn, Beijing, Peoples R China

出　　处：《Chinese Chemical Letters》1998年第2期197-201,共5页中国化学快报（英文版）

摘　　要：The solvatochromic behavior of acetone in supercritical CO? was investigated from 75 bar to 239 bar and at 318.15K. A clustering model is proposed to investigate the formation of solute-solvent and solute-solute clusters, based on the solvatochromic study and some reasonable assumptions. At lower pressures, there were more than one solute molecules in one cluster. At higher pressures, however, each cluster only contained one solute and the clustering of solute-solvent was dominant.The solvatochromic behavior of acetone in supercritical CO? was investigated from 75 bar to 239 bar and at 318.15K. A clustering model is proposed to investigate the formation of solute-solvent and solute-solute clusters, based on the solvatochromic study and some reasonable assumptions. At lower pressures, there were more than one solute molecules in one cluster. At higher pressures, however, each cluster only contained one solute and the clustering of solute-solvent was dominant.

关 键 词：supercritical CO2 ACETONE solvatochromic behavior local density enhancement CLUSTER 

分 类 号：O631[理学—高分子化学]