1. CO Adsorption Performance of CuCl/Activated Carbon by Simultaneous Reduction–Dispersion of Mixed Cu(II) Salts.
- Author
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Xue, Cailong, Hao, Wenming, Cheng, Wenping, Ma, Jinghong, and Li, Ruifeng
- Subjects
FLUE gases ,CARBON monoxide ,COPPER chlorides ,SORBENTS ,ADSORPTION isotherms - Abstract
CO is a toxic gas discharged as a byproduct in tail gases from different industrial flue gases, which needs to be taken care of urgently. In this study, a CuCl/AC adsorbent was made by a facile route of physically mixing CuCl
2 and Cu(HCOO)2 powder with activated carbon (AC), followed by heating at 533 K under vacuum. The samples were characterized by X-ray powder diffraction (XRD), inductively coupled plasma optical emission spectrometry (ICP-OES), N2 adsorption/desorption, and scanning electron microscopy (SEM). It was shown that Cu(II) can be completely reduced to Cu(I), and the monolayer dispersion threshold of CuCl on AC support is 4 mmol·g−1 AC. The adsorption isotherms of CO, CO2 , CH4 , and N2 on CuCl/AC adsorbents were measured by the volumetric method, and the CO/CO2 , CO/CH4 , and CO/N2 selectivities of the adsorbents were predicted using ideal adsorbed solution theory (IAST). The obtained adsorbent displayed a high CO adsorption capacity, high CO/N2 , CO/CH4 , and CO/CO2 selectivities, excellent ad/desorption cycle performance, rapid adsorption rate, and appropriate isosteric heat of adsorption, which made it a promising adsorbent for CO separation and purification. [ABSTRACT FROM AUTHOR]- Published
- 2019
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