Interactions between the Ionic Liquid and the ZrO2 Support in Supported Ionic Liquid Membranes for CO2 Separation

Technologies

Mirella Gutiérrez-Arzaluz¹  Miguel Torres-Rodríguez¹  Eduardo Terrés²  Sibele B. Pergher³  Cinthia E. Sánchez-Fuentes⁴  Violeta Mugica-Álvarez⁴ 

[1] Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana Azcapotzalco, Ciudad de México 02200, Mexico;Instituto Mexicano del Petróleo, Ciudad de México 07730, Mexico;Laboratório de Peneiras Moleculares, PPGQ, Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal RN 59078-970, Brasil;Posgrado en Ciencias e Ingeniería de Materiales, Universidad Autónoma Metropolitana Azcapotzalco, Ciudad de México 02200, Mexico;

关键词: CO2;    ionic liquid;    SILMs;    FTIR;    permeance;    separation factor;   

DOI  :  10.3390/technologies4040032

来源: DOAJ

【 摘 要 】

This work reports the interaction study of two supported ionic liquid membranes (SILMs) based on 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF4]), which were impregnated into porous zirconia supports with 20 nm average pore diameters. The interaction of ionic liquid-support observed from diffuse reflectance (DR), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy and energy dispersive spectroscopy (SEM/EDS) is reported. The IR spectrum in the 600 to 4000 cm−1 range showed a specific interaction of the ionic liquid with the support. The N2 and CO2 permeances in the SILMs with [C4mim][BF4] were 8.7 × 10−8 mol·s−1·m−2·Pa−1 and 9.6 × 10−7 mol·s−1·m−2·Pa−1, respectively. The separation factor through the ionic liquid in the membrane as a function of temperature showed that the SILMs studied here can be used for CO2 separation at low temperatures.

【 授权许可】

Unknown