Phase-transfer catalyst separation by CO2 enhanced aqueous extraction.
CO2 is used to enhance the environmentally benign and efficient recovery of phase transfer catalysts with aqueous extraction; this method can alter the distribution of phase transfer catalysts so dramatically that even in dilute organic solutions they can be separated selectively from an organic reaction mixture with only a small fraction of the water required in a traditional aqueous extraction.
Xie
Xiaofeng
X
Schools of Chemical Engineering and Chemistry, Georgia Institute of Technology, 778 Atlantic Dr, Atlanta, Georgia 30332-0100, USA.
Brown
James S
JS
Joseph
Paul J
PJ
Liotta
Charles L
CL
Eckert
Charles A
CA