Separation of stereoisomers in a simulated moving bed-supercritical fluid chromatography plant

Journal
Journal of chromatography A  
Start Page
175
End Page
186
Citation
Journal of Chromatography A 1-2 (865): 175-186 (1999)
Publisher DOI
10.1016/S0021-9673(99)00833-X
Publisher Link
https://tore.tuhh.de/handle/11420/4698
The combination of two techniques, simulated moving bed (SMB) and supercritical fluid chromatography (SFC), leads to an apparatus with unique features. Besides the known advantages of the SMB process, like reduced solvent consumption and its continuity, the use of supercritical carbon dioxide as the mobile phase offers an easy product recovery by depressurizing the supercritical fluid. Details of a SMB-SFC plant are presented for the first time. Due to the large number of process parameters a simulation of the SMB process is necessary to achieve optimal operating conditions. The most important thermodynamic information for a SMB process is the adsorption isotherms. Therefore, isotherms for two phytol isomers are measured and correlated. A fast dynamic model for the simulation of SMB is used to calculate the region of complete separation taking different column configurations and the compressibility of the mobile phase into account.
Subjects
Adsorption isotherms
Phytol
Positional isomers
Preparative chromatography
Simulated moving bed chromatography
Supercritical fluid chromatography
Toluene
DDC Class
600: Technology