Please wait a minute...
Acta Physico-Chimica Sinica  1997, Vol. 13 Issue (04): 351-353    DOI: 10.3866/PKU.WHXB19970412
Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical CO2
Ke Jie,Lu Jie,Zhong Ming-Hong,Zou Lei,Han Bu-Xing,Yan Hai-Ke
Institute of Chemistry,Academia Sinica,Beijing 100080,China
Download:   PDF(504KB) Export: BibTeX | EndNote (RIS)      


 The enol contents and equilibrium constants of the keto-enol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol?L-1 ethanol. In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute.

Key wordsSupercritical CO2      Ethyl acetoacetate      Tautomerism      Cosolvent      Cluster     
Received: 09 September 1996      Published: 15 April 1997
Corresponding Authors: Han Bu-Xing   
Cite this article:

Ke Jie,Lu Jie,Zhong Ming-Hong,Zou Lei,Han Bu-Xing,Yan Hai-Ke. Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical CO2. Acta Physico-Chimica Sinica, 1997, 13(04): 351-353.

URL:     OR

[1] ALIPOUR Mojtaba. Which Information Theoretic Quantity Should We Choose for Steric Analysis of Water Nanoclusters (H2O)n(n=6,32,64)?[J]. Acta Physico-Chimica Sinica, 2018, 34(4): 407-413.
[2] ZOU Jing-Xiang, SHEN Jun, XU En-Hua, FANG Tao, LI Shu-Hua. Multireference Perturbation Theory and Multireference Coupled Cluster Theory Based on the “Block-Correlation” Framework[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1277-1287.
[3] ZHOU Yang, LI Gao. A Critical Review on Carbon-Carbon Coupling over Ultra-Small Gold Nanoclusters[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1297-1309.
[4] HAN Bo, CHENG Han-Song. Nickel Family Metal Clusters for Catalytic Hydrogenation Processes[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1310-1323.
[5] LIAN Chao, ZHANG Kai, WANG Yuan. Catalytic Properties of Platinum Nanoclusters Supported on Iron Oxides for the Solvent-Free Hydrogenation of Halonitrobenzene[J]. Acta Physico-Chimica Sinica, 2017, 33(5): 984-992.
[6] PENG Li-Juan, YAO Qian, WANG Jing-Bo, LI Ze-Rong, ZHU Quan, LI Xiang-Yuan. Pyrolysis of RDX and Its Derivatives via Reactive Molecular Dynamics Simulations[J]. Acta Physico-Chimica Sinica, 2017, 33(4): 745-754.
[7] ZUO Hui-Wen, LU Chun-Hai, REN Yu-Rong, LI Yi, ZHANG Yong-Fan, CHEN Wen-Kai. Pt4 Clusters Supported on Monolayer Graphitic Carbon Nitride Sheets for Oxygen Adsorption: A First-Principles Study[J]. Acta Physico-Chimica Sinica, 2016, 32(5): 1183-1190.
[8] LI Yong-Kang, YOU Jing-Lin, WANG Jian, WANG Min, MA Nan, WEI Guang-Chao. Molar Gibbs Mixing Free Energy Calculation for a Na2O-Al2O3-SiO2 Ternary Melt Based on the Cluster Model[J]. Acta Physico-Chimica Sinica, 2016, 32(3): 631-637.
[9] ZHOU Yu, XU Jing, WANG Nan-Nan, YU Zhi-Wu. Excess Spectroscopy: Concept and Applications[J]. Acta Physico-Chimica Sinica, 2016, 32(1): 239-248.
[10] LI Wei, ZHANG Jing, QI Chuan-Song. Quantum Chemistry Calculations of Ion Cluster Models of EMIM Ionic Liquids[J]. Acta Physico-Chimica Sinica, 2015, 31(9): 1690-1698.
[11] YANG Fan, YU Peng-Yun, ZHAO Juan, ZHAO Yan, WANG Jian-Ping. Intermolecular Hydrogen Bonding Structural Dynamics in Ethylene Glycol by Femtosecond Nonlinear Infrared Spectroscopy[J]. Acta Physico-Chimica Sinica, 2015, 31(7): 1275-1282.
[12] TU Zhe-Yan, WANG Wen-Liang. Coupled-Cluster Theoretical Study of Structures and Spectroscopic Constants of Dimers Zn2 and Cd2 with Spin-Orbit Coupling[J]. Acta Physico-Chimica Sinica, 2015, 31(6): 1054-1058.
[13] ZHAO Jun-Feng, SUN Xiao-Li, LI Ji-Lai, HUANG Xu-Ri. Theoretical Study of Methanol C―H and O―H Bond Activation by PtRu Clusters[J]. Acta Physico-Chimica Sinica, 2015, 31(6): 1077-1085.
[14] LI Hui-Xue, ZUO Guo-Fang, LI Zhi-Feng, WANG Xiao-Feng, ZHENG Ren-Hui. Theoretical Study of Hemicyanine Dye as a Dye-Sensitized Solar Cell Light-Absorbing Material[J]. Acta Physico-Chimica Sinica, 2015, 31(5): 866-876.
[15] XIAO Xue-Chun, SHI Wei, NI Zhe-Ming, ZHANG Lian-Yang, XU Jin-Fang. Adsorption of Cinnamaldehyde on Icosahedral Au13 and Pt13 Clusters[J]. Acta Physico-Chimica Sinica, 2015, 31(5): 885-892.