Spectroscopic analysis of liquid/liquid interfaces in multiphase microflows.
Microscopic quasi-elastic laser scattering (muQELS) spectroscopy has been developed for analysis of interfacial phenomena at laminar multiphase microflow in a microchannel. Transport phenomena of a metal chelate through a water/toluene interface were measured, and transient adsorption of the chelate in the initial step of the transport was measured. A water/methanol miscible interface was also measured, and the interfacial free energy of a miscible interface was determined for the first time. The muQELS is expected to be very effective not only for physicochemical investigations of transport and mixing, but also for elemental process analysis of heterogeneous reactions.
Hibara
Akihide
A
Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
Nonaka
Masaki
M
Tokeshi
Manabu
M
Kitamori
Takehiko
T