A supported Cu(I)@MIL-100(Fe) adsorbent with high CO adsorption capacity and CO/N2 selectivity

被引：0
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作者：
Peng, Junjie [1 ]
Xian, Sikai [1 ]
Xiao, Jing [2 ]
Huang, Yan [1 ]
Xia, Qibin [2 ]
Wang, Haihui [1 ]
Li, Zhong [1 ]
机构：
[1] School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou,510640, China
[2] The Key Laboratory of Enhanced Heat Transfer and Energy Conversation Ministry of Education, South China University of Technology, Guangzhou,510640, China
来源：
Chemical Engineering Journal | 2015年 / 270卷
关键词：
A supported Cu(I)@MIL-100(Fe) adsorbent was developed for the separation of CO/N2 binary gas mixture. The Cu(I)@MIL-100(Fe) was prepared by the wetness impregnation of the divalent copper salts on MIL-100(Fe); followed by the reduction of Cu2+→Cu+ under vacuum at elevated temperature. The samples were characterized by N2 adsorption; X-ray diffraction (XRD); X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The adsorption isotherms of CO and N2 on Cu(I)@MIL-100(Fe) were measured by the volumetric method; and the CO/N2 adsorption selectivities of the samples were calculated based on ideal adsorbed solution theory (IAST). The results showed that (a) the Cu(I)@MIL-100(Fe) adsorbent achieved a superior CO adsorption capacity of 2.78mmol/g at 298K and 100kPa; 7 times of that on parent MIL-100(Fe); and the adsorption behavior was well described by the dual-site Langmuir-Freundlich model; (b) the CO/N2 adsorption selectivity of Cu(I)@MIL-100(Fe) was up to 169 at 100kPa; being 112 times of that of parent MIL-100(Fe); (c) the significant enhancement of CO uptake and CO/N2 selectivity can be mainly attributed to the selective π-complexation between CO and Cu(I) on Cu(I)@MIL-100(Fe). © 2015 Elsevier B.V;
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页码：282 / 289
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