Selective CO adsorbent CuCl/AC prepared using CuCl 2 as a precursor by a facile method

Activated carbon (AC) supported CuCl (CuCl/AC) has been prepared with CuCl 2 as precursor by a monolayer dispersion method. The samples are investigated for CO adsorption and characterized by inductively coupled plasma optical emission spectrometry, X-ray diffraction, N 2 adsorption/desorption and X-ray photoelectron spectroscopy. The characterization results reveal that CuCl 2 supported on AC can be completely converted to CuCl after activation at 543 K in N 2 . The resulting adsorbent displays high CO adsorption capacity, high CO/N 2 , CO/CH 4 and CO/CO 2 adsorption selectivities and excellent reversibility, and the adsorption equilibrium isotherms of CO on the adsorbents at temperatures up to 333 K can be well fitted by both the Langmuir and Sips models.