Information

Dear user, the application need JavaScript support. Please enable JavaScript in your browser.

You are browsing as a GUEST
Title of the item:

Designing silica xerogels containing RTIL for CO 2 capture and CO 2 /CH 4 separation: Influence of ILs anion, cation and cation side alkyl chain length and ramification.

Title :
Designing silica xerogels containing RTIL for CO 2 capture and CO 2 /CH 4 separation: Influence of ILs anion, cation and cation side alkyl chain length and ramification.
Authors :
Dos Santos LM; School of Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil.
Bernard FL; School of Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil.
Polesso BB; Post-Graduation Program in Materials Engineering and Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil.
Pinto IS; School of Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil.
Frankenberg CC; School of Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil.
Corvo MC; CENIMAT|i3N, Dep. Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal.
Almeida PL; CENIMAT|i3N, Dep. Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal; ISEL, ADF, Rua Conselheiro Emídio Navarro 1, Lisboa, Portugal.
Cabrita E; UCIBIO, Dep.Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal.
Einloft S; School of Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil; Post-Graduation Program in Materials Engineering and Technology, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Brazil. Electronic address: .
Show more
Source :
Journal of environmental management [J Environ Manage] 2020 Aug 15; Vol. 268, pp. 110340. Date of Electronic Publication: 2020 May 14.
Publication Type :
Journal Article
Language :
English
Journal Info :
Publisher: Academic Press Country of Publication: England NLM ID: 0401664 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-8630 (Electronic) Linking ISSN: 03014797 NLM ISO Abbreviation: J. Environ. Manage. Subsets: MEDLINE
Imprint Name(s) :
Original Publication: London ; New York, Academic Press.
MeSH Terms :
Ionic Liquids*
Silicon Dioxide*
Anions ; Carbon Dioxide ; Cations
Contributed Indexing :
Keywords: CO(2) separation; Ionic liquids; Natural gas; Silica xerogels
Substance Nomenclature :
0 (Anions)
0 (Cations)
0 (Ionic Liquids)
142M471B3J (Carbon Dioxide)
7631-86-9 (Silicon Dioxide)
Entry Date(s) :
Date Created: 20200509 Date Completed: 20200610 Latest Revision: 20200610
Update Code :
20200827
DOI :
10.1016/j.jenvman.2020.110340
PMID :
32383660
Academic Journal
CO 2 separation from natural gas is considered to be a crucial strategy to mitigate global warming problems, meet product specification, pipeline specs and other application specific requirements. Silica xerogels (SX) are considered to be potential materials for CO 2 capture due to their high specific surface area. Thus, a series of silica xerogels functionalized with imidazolium, phosphonium, ammonium and pyridinium-based room-temperature ionic liquids (RTILs) were synthesized. The synthesized silica xerogels were characterized by NMR, helium pycnometry, DTA-TG, BET, SEM and TEM. CO 2 sorption, reusability and CO 2 /CH 4 selectivity were assessed by the pressure-decay technique. Silica xerogels containing IL demonstrated advantages compared to RTILs used as separation solvents in CO 2 capture processes including higher CO 2 sorption capacity and faster sorption/desorption. Using fluorinated anion for functionalization of silica xerogels leads to a higher affinity for CO 2 over CH 4. The best performance was obtained by SX- [bmim] [TF 2 N] (223.4 mg CO 2 /g mg/g at 298.15 K and 20 bar). Moreover, SX- [bmim] [TF 2 N] showed higher CO 2 sorption capacity as compared to other reported sorbents. CO 2 sorption and CO 2 /CH 4 selectivity results were submitted to an analysis of variance and the means compared using Tukey's test (5%).
(Copyright © 2020 Elsevier Ltd. All rights reserved.)

We use cookies to help identify your computer so we can tailor your user experience, track shopping basket contents and remember where you are in the order process.