TY - JOUR
T1 - Biodegradable betaine-based aprotic task-specific ionic liquids and their application in efficient SO2 absorption
AU - Yang, Benqun
AU - Zhang, Qinghua
AU - Fei, Yuqing
AU - Zhou, Feng
AU - Wang, Peixue
AU - Deng, Youquan
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2015.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Utilization of cheap and natural resources is an important topic in green chemistry. A new class of betaine-based aprotic task-specific ionic liquids (ILs), including [C4bet][TFSI], [C4bet][DCA], [C4bet][SCN], [1O2bet][TFSI], [1O2bet][DCA], [2O2bet][TFSI], and [2O2bet][DCA], has been designed and prepared through a new ionic liquidization strategy from the renewable natural resource betaine. Their physicochemical characteristics, including spectral properties, density, viscosity, melting point, glass transition temperature, thermal stability, conductivity and electrochemical window, have been comprehensively studied. They were first applied as new absorbents for SO2 capture, and [C4bet][SCN] exhibited the maximum absorption capacity of 0.93 molSO2/molILs at 20 °C and 1 atm (SO2/N2 = 10% vol.) with rapid absorption rates in 21 min. Moreover, the effect of temperature, pressure, and water content on the absorption performance of SO2 was investigated. The possible absorption mechanism was studied using FT-IR, NMR and quantum chemical calculation. In addition, the [C4bet][SCN] can maintain the high absorption capacity and the rapid absorption rates for 25 absorption/desorption cycles.
AB - Utilization of cheap and natural resources is an important topic in green chemistry. A new class of betaine-based aprotic task-specific ionic liquids (ILs), including [C4bet][TFSI], [C4bet][DCA], [C4bet][SCN], [1O2bet][TFSI], [1O2bet][DCA], [2O2bet][TFSI], and [2O2bet][DCA], has been designed and prepared through a new ionic liquidization strategy from the renewable natural resource betaine. Their physicochemical characteristics, including spectral properties, density, viscosity, melting point, glass transition temperature, thermal stability, conductivity and electrochemical window, have been comprehensively studied. They were first applied as new absorbents for SO2 capture, and [C4bet][SCN] exhibited the maximum absorption capacity of 0.93 molSO2/molILs at 20 °C and 1 atm (SO2/N2 = 10% vol.) with rapid absorption rates in 21 min. Moreover, the effect of temperature, pressure, and water content on the absorption performance of SO2 was investigated. The possible absorption mechanism was studied using FT-IR, NMR and quantum chemical calculation. In addition, the [C4bet][SCN] can maintain the high absorption capacity and the rapid absorption rates for 25 absorption/desorption cycles.
UR - http://www.scopus.com/inward/record.url?scp=84936803165&partnerID=8YFLogxK
U2 - 10.1039/c5gc00691k
DO - 10.1039/c5gc00691k
M3 - 文章
AN - SCOPUS:84936803165
SN - 1463-9262
VL - 17
SP - 3798
EP - 3805
JO - Green Chemistry
JF - Green Chemistry
IS - 7
ER -
