Extração no ponto nuvem de compostos orgânicos homólogos e isômeros

Química Nova

Lindemberg J. N. Duarte¹  Jean Paul Canselier¹ 

[1] ,Laboratoire de Génie Chimique,France

关键词: nonionic surfactant;    cloud-point extraction;    equilibrium partition coefficient;   

DOI  :  10.1590/S0100-40422005000300012

来源: SciELO

【 摘 要 】

In this work, the feasibility of employing micelle-mediated extraction for selective separation of homologous or isomeric organic compounds is demonstrated. Firstly, the main parameters controlling extraction performances, such as surfactant concentration and temperature were varied. A Scheffé-type experimental design was demonstrated as a novel and useful method to characterize the various experimental factors. At each point selected in the two-phase domain and for a given solute, extraction percentage (E%), concentration ratio, phase volume ratio, and equilibrium partition coefficient (K C) were determined. The values of E% and K C decrease in the following order: phenol > 1-phenylethanol ~ 2-phenylethanol > benzyl alcohol.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License