Document Detail


Phase Behavior and Vapor Pressures of the Pyrene + 9,10-Dibromoanthracene System.
MedLine Citation:
PMID:  21076624     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The present work concerns the thermochemical and vapor pressure behavior of the pyrene + 9,10-dibromoanthracene system. The phase diagram of the system has been studied using the thaw melt method and the results show the formation of non-eutectic multiphase mixtures. The temperatures of crystallization, and enthalpies of fusion and crystallization of the system were determined by differential scanning calorimetry. The system behavior can be divided into 5 regions. The X-ray diffraction results also indicated the existence of multiple phase characteristics. The solid-vapor equilibrium studies showed that for mixtures with high mole fractions of pyrene, two different preferred states exist that determine the vapor pressure. For those mixtures with moderate and low mole fractions of pyrene, only one preferred state exists that determines vapor pressure behavior. It was also demonstrated that the vapor pressure of the mixtures is independent of the mixture preparation technique.
Authors:
Jinxia Fu; James W Rice; Eric M Suuberg
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Fluid phase equilibria     Volume:  298     ISSN:  0378-3812     ISO Abbreviation:  Fluid Phase Equilib     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101322266     Medline TA:  Fluid Phase Equilib     Country:  -    
Other Details:
Languages:  ENG     Pagination:  219-224     Citation Subset:  -    
Affiliation:
Brown University Department of Chemistry, Providence, RI USA 02912.
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Descriptor/Qualifier:
Grant Support
ID/Acronym/Agency:
P42 ES013660-066034//NIEHS NIH HHS

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