期刊
ARABIAN JOURNAL OF CHEMISTRY
卷 10, 期 -, 页码 S1501-S1505出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.arabjc.2013.04.031
关键词
Li; Zr doped porous silica; CO2 adsorption; Low temperature
资金
- Korea CCS RD centre
- Ministry of Education, Science and Technology of the Korean Government
Li, Zr doped porous silica was synthesized in one pot and investigated for low temperature CO2 adsorption. The synthesized nanoparticle was characterized by X-ray diffraction (XRD), N-2 adsorption-desorption measurement, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The specific surface area, average pore diameter and pore volume were determined to be 962 m(2)/g, 2.3 nm and 0.56 cm(3)/g respectively. ICP-AES analysis revealed a metal content of 4 wt.% (Zr) and 3.42 wt.% (Li). Their CO2 adsorption capacity was tested at room temperature and atmospheric pressure. An uptake of about 5 wt.% was observed and regenerable at a low temperature of 200 degrees C. This adsorption and desorption temperature of the sorbent is lower than the reported lithium silicate. The CO2 adsorption-desorption cyclic performance studies illustrated that Li, Zr doped porous silica is a recyclable, selective and potential sorbent for CO2 adsorption. (C) 2013 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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