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Multicomponent solubilities of reactants and products of cyclohexane oxidation in supercritical carbon dioxide

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Title Multicomponent solubilities of reactants and products of cyclohexane oxidation in supercritical carbon dioxide
 
Creator MUKHOPADHYAY, M
SRINIVAS, P
 
Subject pressure
mixtures
 
Description Cyclohexane oxidation starting with a homogeneous mixture in supercritical carbon dioxide (SC CO2) medium encounters phase separation as the products are formed. Multicomponent solubility data in the reacting system are therefore needed to ascertain whether it is due to condensation of the reactants, oxygen and cyclohexane, or the products, cyclohexanone, cyclohexanol, and water. In the present work, solubility measurements have been made for cyclohexanone and cyclohexanol in supercritical CO2 at 410, 423, and 433 K and in N-2 at 423 K (N-2 is taken as a homomorph for oxygen to avoid reaction). Solubility data have been measured in SC CO2 at 423 K for each of the three binary mixtures, (i) cyclohexane-cyclohexanone, (ii) cyclohexane-cyclohexanol, and (iii) cyclohexanone-cyclohexanol, at 170 and 205 bar. These data have been utilized to regress for each binary pair two adjustable parameters in the Peng-Robinson (P-R) EOS for predicting the multicomponent solubility data in a SC mixture of CO2 and O-2 in the proportion of 8:1. It was concluded that the solubility of water is suppressed in the presence of other organic products and would be the first to condense out of the reaction mixture.
 
Publisher AMER CHEMICAL SOC
 
Date 2011-07-14T13:25:57Z
2011-12-26T12:48:24Z
2011-12-27T05:36:42Z
2011-07-14T13:25:57Z
2011-12-26T12:48:24Z
2011-12-27T05:36:42Z
1996
 
Type Article
 
Identifier INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 35(12), 4713-4717
0888-5885
http://dx.doi.org/10.1021/ie9601155
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3966
http://hdl.handle.net/10054/3966
 
Language en