Solubility of carbon dioxide in encapsulated ionic liquids
authors Lemus, J; Da Silva, FFA; Palomar, J; Carvalho, PJ; Coutinho, JAP
nationality International
journal SEPARATION AND PURIFICATION TECHNOLOGY
author keywords Gas treatment; Carbon dioxide capture; Encapsulated ionic liquids; Templated carbon
keywords FACILITATED TRANSPORT MEMBRANES; CO2 CAPTURE; ACTIVATED CARBON; ABSORPTION; PHASE; BIS(TRIFLUOROMETHYLSULFONYL)IMIDE; SEQUESTRATION; ADSORPTION; REACTIVITY; DIFFUSION
abstract Ionic liquids (ILs) have been object of extensive research during the last years due to their potential for industrial application with special interest on carbon dioxide (CO2) capture. Nonetheless, ILs transport properties have stand out as the major drawback for their use on absorption applications. This work proposes ionic liquids encapsulated (ENILs) into carbonaceous submicrocapsules, as a novel material for CO2 capture. This innovative material takes advantage of the ILs gas-absorbing properties and cost-effectiveness while circumventing the IL viscosity by increasing the surface contact area with respect to the bulk fluid. The ENILs prepared using 1-ethyl-3-methylimadazolium bis(trifluoromethylsulfonyl)imide ([C2C1 im] [NTf2]) and N-methyl-2-hydroxyethylammonium pentanoate (m-HEAP), were characterized by SEM, TEM, elemental analysis, TGA and BET to assess their morphology, chemical composition, porous structure and thermal stability. The absorption of CO2 on these materials was studied up to 0.6 MPa and 353 K. Desorption of CO2 from the exhausted ENILs was evaluated, at mild conditions, evidencing the ENILs as suitable separating agents for CO2 capture, with high sorption capacity and fast and complete regeneration, and feasible alternatives to bulk IL absorption.
publisher ELSEVIER SCIENCE BV
issn 1383-5866
year published 2018
volume 196
beginning page 41
ending page 46
digital object identifier (doi) 10.1016/j.seppur.2017.08.032
web of science category Engineering, Chemical
subject category Engineering
unique article identifier WOS:000427211200007
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 3.927
5 year journal impact factor 4.202
category normalized journal impact factor percentile 84.307
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg