TY - JOUR
T1 - Mass Transfer Rate Enhancement for CO2 Separation by Ionic Liquids
T2 - Effect of Film Thickness
AU - Xie, Wenlong
AU - Ji, Xiaoyan
AU - Feng, Xin
AU - Lu, Xiaohua
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2016/1/13
Y1 - 2016/1/13
N2 - Ionic liquids (ILs) are promising in CO2 separation, while the film thickness is particularly critical for gas transport in these viscous and expensive liquids. In this work, the influence of IL-film thickness on CO2 absorption/desorption of two different IL immobilized sorbents was investigated, in which the results from the thermogravimetric analyzer were further used to estimate the scale of IL-film thickness. It is found that the IL-film in nanoscale is a prerequisite for efficient CO2 absorption/desorption; the equilibrium time can be 10-times different, and the rate constant can be 100-times different for microscale and nanoscale IL-films. This is the first time to quantitatively reveal the influence of IL-film thickness and find out its scale for a significant rate enhancement in the CO2 absorption/desorption by IL immobilized sorbents.
AB - Ionic liquids (ILs) are promising in CO2 separation, while the film thickness is particularly critical for gas transport in these viscous and expensive liquids. In this work, the influence of IL-film thickness on CO2 absorption/desorption of two different IL immobilized sorbents was investigated, in which the results from the thermogravimetric analyzer were further used to estimate the scale of IL-film thickness. It is found that the IL-film in nanoscale is a prerequisite for efficient CO2 absorption/desorption; the equilibrium time can be 10-times different, and the rate constant can be 100-times different for microscale and nanoscale IL-films. This is the first time to quantitatively reveal the influence of IL-film thickness and find out its scale for a significant rate enhancement in the CO2 absorption/desorption by IL immobilized sorbents.
UR - http://www.scopus.com/inward/record.url?scp=84954435318&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.5b03339
DO - 10.1021/acs.iecr.5b03339
M3 - 文章
AN - SCOPUS:84954435318
SN - 0888-5885
VL - 55
SP - 366
EP - 372
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 1
ER -