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CO2 capture using silica-immobilized dicationic ionic liquids with magnetic and non-magnetic properties.
Duarte, Evandro; Bernard, Franciele; Dos Santos, Leonardo Moreira; Polesso, Barbara B; Duczinski, Rafael; Forneck, Vitor; Geshev, Julian; Einloft, Sandra.
Afiliação
  • Duarte E; Post-Graduation Program in Materials Engineering and Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Bernard F; School of Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Dos Santos LM; School of Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Polesso BB; School of Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Duczinski R; Post-Graduation Program in Materials Engineering and Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Forneck V; School of Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Geshev J; Post-Graduation Program in Materials Engineering and Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
  • Einloft S; School of Technology, Pontifical Catholic University of Rio Grande do Sul - PUC, RS, Brazil.
Heliyon ; 10(8): e29657, 2024 Apr 30.
Article em En | MEDLINE | ID: mdl-38655364
ABSTRACT
The need to find alternative materials to replace aqueous amine solutions for the capture of CO2 in post-combustion technologies is pressing. This study assesses the CO2 sorption capacity and CO2/N2 selectivity of three dicationic ionic liquids with distinct anions immobilized in commercial mesoporous silica support (SBA- 15). The samples were characterized by UART-FTIR, NMR, Raman, FESEM, TEM, TGA, Magnetometry (VSM), BET and BJH. The highest CO2 sorption capacity and CO2/N2 selectivity were obtained for sample SBA@DIL_2FeCl4 [at 1 bar and 25 °C; 57.31 (±0.02) mg CO2/g; 12.27 (±0.72) mg CO2/g]. The results were compared to pristine SBA-15 and revealed a similar sorption capacity, indicating that the IL has no impact on the CO2 sorption capacity of silica. On the other hand, selectivity was improved by approximately 3.8 times, demonstrating the affinity of the ionic liquid for the CO2 molecule. The material underwent multiple sorption/desorption cycles and proved to be stable and a promising option for use in industrial CO2 capture processes.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido