【摘 要】
：
Experimental study of mass transfer in water/ionic liquid(IL)microdroplet systems was carried out using micro-LIF(laser-induced fluorescence)measurement method,where [C4mim][PF6] was adopted as a repr
【机 构】
：
Department of Chemical Engineering,Tsinghua University,Beijing 100084,P. R. China
【出 处】
：
The 14th International Conference on Microreactivity Technol
论文部分内容阅读
Experimental study of mass transfer in water/ionic liquid(IL)microdroplet systems was carried out using micro-LIF(laser-induced fluorescence)measurement method,where [C4mim][PF6] was adopted as a representative IL and Rhodamine 6G as the model solute.Firstly,microfluidic devices and auxiliary reference experiments were elaborately designed to facilitate concentration measurement by micro-LIF in liquid-liquid droplet flow systems.The dynamic mass transfer behaviors of Rhodamine 6G from water droplet to surrounding IL in two microchannels were then observed vividly,and quantitatively characterized by mass transfer coefficients kLa.The results showed the droplet-based microsystems brought evident enhancement on the mass transfer between IL and water,where kLa was in the range of 0.05~1.5 s-1,about 103~104 times higher than that in a conventional macrosystem.This work disclosed the mass transfer behavior in water/IL microdroplet system and confirmed the great potential of droplet-based microsystem in intensifying the mass transfer in IL-involved multiphase systems.
其他文献
本工作研究了Sr0.7Ca0.3TiO3 改性BiFeO3 陶瓷的结构、铁电和磁性能.采用标准固相反应法制得了Bi1-x(Sr0.7Ca0.3)xFe1-xTixO3(x=0.1～0.6)固溶体陶瓷.
反铁电材料由于在驱动器,换能器以及储能等方面的应用而得到广泛研究,单晶因为特定的轴取向而具有比陶瓷更优越的性能。但是,由于各成分的不一致共融特点,较难直接得到固溶体单晶[1,2]。
The microfluid segment technology allows the realization of fast mixing processes and thus a very narrow residence time distribution.This enables optimum preconditions for a fast nanoparticle nucleati
Because of their great potential in nano-and biotechnology,polymeric nanoparticles such as polymersomes have attracted growing interest during the last decades.One possible application can be found in
Polyisobutylenes(PIBs),produced by the cationic polymerization of isobutylene(IB),have exhibited some distinguished properties [1-2] with respect to thermal stability,flexibility at ambient temperatur
Compared with typical gold nanoparticle(AuNP)synthesis routes which rely on aqueous reducing agents,reduction by carbon monoxide(CO)has various advantages such as no reducing agent left in the product
Microfluidic droplet-based systems represent a unique tool to study crystallization kinetics as they allow a precise temperature control,few impurities and the possibility to control fluid dynamics.Co
The growing understanding of the unique physical and chemical properties of the nanoparticles is constantly revealing novel applications from catalysis,drug delivery,sensors,energy storage,etc1.Despit
The stimulation-responsive microcapsules have considerable applications in drug delivery1,agricultural industries2 and medical technology3,4.They always united with the environment,taking advantage of
With the rapid development of microfabrication technology,more fabrication methods and applications of microchannel heat exchanger have been frequently reported in last two decade1-3,and those methods