Novel Inverse Supported Ionic Liquid Absorbents for Acidic Gas Removal from Flue Gas

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Karousos DS, Kouvelos E, Sapalidis A, Pohako-Esko K, Bahlmann M, Schulz P, Wasserscheid P, Siranidi E, Vangeli O, Falaras P, Kanellopoulos N, Romanos GE
Zeitschrift: Industrial & Engineering Chemistry Research
Verlag: ACS American Chemical Society
Jahr der Veröffentlichung: 2016
Band: 55
Heftnummer: 19
Seitenbereich: 5748-5762
ISSN: 0888-5885


Abstract


This work reports on the astonishing high capacity of inverse supported ionic liquid absorbents, hereinafter denoted as "inverse SILPs" to remove acidic gases (SO2 and CO2) from flue gas streams. These nonconventional SILPs are easily prepared in the form of flowing powder via a phase inversion technique and consist of tiny ionic liquid (IL) droplets enclosed into an ultrathin, porous solid sleeve of pyrogenic silica nanoparticles. The CO2/N-2 and SO2/CO2 separation performance and regeneration efficiency of inverse SILPs developed from six different ILs and two IL/chitosan ionogels was examined via gravimetric CO2, N-2 absorption isotherms and via SO2, CO2, O-2 breakthrough curves from gas mixtures in fixed beds. The involved ILs varied from chemisorbing ones, composed of alkyl- or alkanol-ammonium cations and amino acid anions, to physisorbing ones including ether functionalized anions and 1-alky1-3-methylimidazolium cations. It is noteworthy that the best performing inverse SILP consisted of a very common IL, the 1-butyl-3-methylimidazolium chloride [BMIM] [Cl], the absorption capacity of which was slightly enhanced by dissolving 5 wt % of chitosan to form the respective ionogel. The material's performance was stable in repeated cycles of absorption and regeneration at 60 degrees C under helium flow, exhibiting SO2/CO2 selectivity of above 300, while the SO2 and CO2 absorption capacity was 1.6 and 0.6 mmol/g respectively at 25 degrees C, in a gas stream of 1 bar composed of 0.13 vol % SO2, 13 vol % CO2, 11.5 vol % O-2 and N-2 (balance).



FAU-Autoren / FAU-Herausgeber

Bahlmann, Matthias
Lehrstuhl für Chemische Reaktionstechnik
Pohako-Esko, Kaija
Lehrstuhl für Chemische Reaktionstechnik
Schulz, Peter Dr.
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Autor(en) der externen Einrichtung(en)
National Centre for Scientific Research (NCSR) "Demokritos"


Zitierweisen

APA:
Karousos, D.S., Kouvelos, E., Sapalidis, A., Pohako-Esko, K., Bahlmann, M., Schulz, P.,... Romanos, G.E. (2016). Novel Inverse Supported Ionic Liquid Absorbents for Acidic Gas Removal from Flue Gas. Industrial & Engineering Chemistry Research, 55(19), 5748-5762. https://dx.doi.org/10.1021/acs.iecr.6b00664

MLA:
Karousos, D. S., et al. "Novel Inverse Supported Ionic Liquid Absorbents for Acidic Gas Removal from Flue Gas." Industrial & Engineering Chemistry Research 55.19 (2016): 5748-5762.

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Zuletzt aktualisiert 2018-08-09 um 07:10