TY  - JOUR
ID  - scholars5581
KW  - Activated carbon; Adsorbents; Adsorption; Energy dispersive spectroscopy; Field emission microscopes; Flow of gases; Fourier transform infrared spectroscopy; Gases; Gravimetric analysis; Leaching; Mercury (metal); Scanning electron microscopy; Silica; Stability; Surface morphology; Thermogravimetric analysis; X ray spectroscopy
KW  -  1-Butyl-3-methylimidazolium chloride; Activated carbon supported; Adsorption efficiency; Brunauer-emmett-teller surface areas; Energy dispersive X ray spectroscopy; Field emission scanning electron microscopy; Supported ionic liquids; Thermal gravimetric analysis
KW  -  Ionic liquids
N2  - Solid-supported ionic liquids (ILs) have recently received attention as a potential effective technology for mercury removal from a gas stream. However, the leaching of ILs from the solid support has not been investigated in detail. In the present study, the stability of 1-butyl-3-methylimidazolium chloride (BmimCl) impregnated on silica and activated carbon was evaluated during elemental mercury removal (Hg0) from a gas stream. Silica- and carbon-supported BmimCl-based adsorbents were characterized before and after Hg0 adsorption by using Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller surface area analysis, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and thermal gravimetric analysis. The carbon-supported adsorbent showed better stability (no leaching of ILs) compared to the silica-supported adsorbent because of the availability of substantial micropores. The lower stability of silica-supported ILs is attributed to the presence of mesopores on silica support, which holds BmimCl ineffectively in a gas flow of a high concentration of Hg0 (15 ppm). The activated carbon-supported ILs, especially in a powdered form, showed higher adsorption efficiency of Hg0 from a gas stream. The adsorption capacity of powdered carbon-supported BmimCl was 21 mg/g in 68 h of continuous adsorption. © 2015 American Chemical Society.
IS  - 48
VL  - 54
A1  - Abbas, T.
A1  - Kallidanthiyil Chellappan, L.
A1  - Mutalib, M.I.A.
A1  - Cheun, K.Y.
A1  - Nasir Shah, S.
A1  - Nazir, S.
A1  - Hassan, A.
A1  - Abai, M.B.
A1  - Khan, E.
JF  - Industrial and Engineering Chemistry Research
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949032810&doi=10.1021%2facs.iecr.5b01738&partnerID=40&md5=a3882ace3082976fce6359d95a872a5c
Y1  - 2015///
TI  - Stability and Performance of Physically Immobilized Ionic Liquids for Mercury Adsorption from a Gas Stream
SP  - 12114
N1  - cited By 17
AV  - none
EP  - 12123
PB  - American Chemical Society
SN  - 08885885
ER  -