| A New Method to Investigate the Clustering Phenomena in Supercritical Fluids |
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| 引用本文： | Jie LU, Qing HUO,Bu Xing HAN and Hai Ke YAN(Institute of Chemistry,Chinese Academy of Sciences,Bejing 100080 Department of Chemical Engineering,Beijing Union University Chemical Engineering College). A New Method to Investigate the Clustering Phenomena in Supercritical Fluids[J]. 中国化学快报, 1998, 0(2) |
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| 作者姓名： | Jie LU Qing HUO Bu Xing HAN and Hai Ke YAN(Institute of Chemistry Chinese Academy of Sciences Bejing 100080 Department of Chemical Engineering Beijing Union University Chemical Engineering College) |
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| 作者单位： | Institute of Chemistry，Chinese Academy of Sciences，Bejing 100080 Department of Chemical Engineering，Beijing Union University Chemical Engineering College |
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| 摘 要： | EstimationoflocaldensityofsolventaboutthesoluteSolvatochromicbehaviorsofspectroscopicprobesarewidelyusedtoestimatethesol-ventstrengthofsupercriticalfluids(SCF,).i-3lnthiswork,thesolvatochrondcshiftofthen-n*transitionbandforacetone(O.o37mo1.L-')insupercrihcal(SC)CO2wasde-terminedbyUVspectroscopytostUdythesolvationeffect.TheMcRae-BaylissexpressionbasedonthedielectriccontinUUInmodelgivestherelahonshipbetWeenso1vatochromicshiftandpo1arizabilityofnonPolarsolvents4-5asfollows:wherevisthewave…
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A New Method to Investigate the Clustering Phenomena in Supercritical Fluids |
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| Jie LU, Qing HUO,Bu Xing HAN and Hai Ke YAN. A New Method to Investigate the Clustering Phenomena in Supercritical Fluids[J]. Chinese Chemical Letters, 1998, 0(2) |
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| Authors: | Jie LU Qing HUO Bu Xing HAN Hai Ke YAN |
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| Abstract: | The solvatochromic behavior of acetone in supercritical CO2 was investigated from 75bar to 239 bar and at 318. 15K. A clustering model is proposed to investigate the formation of sol-ute-solvent and solute-solute clusters, based on the solvatochromic study and some reasonableassumptions. At lower pressures, there were more than one solute molecules in one cluster. Athigher pressures, however, each cluster only contained one solute and the clustering of solute-solvent was dominant. |
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| Keywords: | supercritical CO_2 acetone solvatochromic behavior local density enhancement cluster |
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