Carbon dioxide adsorption by zinc-functionalized ionic liquid impregnated into bio-templated mesoporous silica beads

被引：51

作者：

Arellano, Ian Harvey ^{[1
,2
]}

Madani, S. Hadi ^{[3
]}

Huang, Junhua ^{[2
]}

Pendleton, Phillip ^{[1
,3
]}

机构：

[1] Univ S Australia, Sansom Inst, Ctr Mol & Mat Sci, Adelaide, SA 5000, Australia

[2] CSIRO Energy Flagship, Clayton, Vic 3169, Australia

[3] Univ S Australia, Ian Wark Res Inst, Mawson Lakes, SA 5095, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2016年 / 283卷

基金：

澳大利亚研究理事会;

关键词：

Ionic liquid; Porous silica; CO2; capture; Confinement; Adsorption; SILP; CO2; CAPTURE; SOLID SORBENTS; HIGH-CAPACITY; TEMPERATURE; ABSORPTION; IONOGELS; SOLUBILITY; SEPARATION; ADSORBENT; SUPPORT;

D O I：

10.1016/j.cej.2015.08.006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Novel high capacity hybrid sorbents for CO2 capture have been developed based on zinc-functionalized ionic liquid (IL) impregnated into mesoporous silica beads derived from calcium alginate template beads. Pore modification and development of a surface-confined layer of IL synergistically enhanced the uptake capacity (up to 8.7 wt%) and kinetics of these materials. Spectroscopic and thermophysical signatures of the IL impregnated materials confirm the existence of a highly confined IL layer at low IL:SiO2 ratio, and multilayer-mimicking bulk phase at higher IL loading. Our results clearly demonstrate that developing a thin layer of zinc-functionalized IL onto porous silica beads effectively enhances the uptake kinetics by exposing interaction sites across a large surface area, and facilitating diffusion through the pore network of the support. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：692 / 702

页数：11

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