LAUSR

Separation and recovery of CO from CO, H2, and N2 mixtures is quite imperative, due to the huge demands in chemical industry, aims of human health, and regulations of hydrogen fuel cell techniques. Cu(I) π complexation adsorbents show great potentials for CO adsorption. In this work, the typical MOF, HKUST-1 was modified with CuCl by the monolayer dispersion method for preparation of π complexation adsorbents. The resultant adsorbents were well characterized with XRD, and N2 adsorption−desorption isotherms (− 196 °C). These results suggest that CuCl has been successfully modified on HKUST-1. The CO, H2, and N2 adsorption performance of the adsorbents at 25 °C was tested as well. In addition, CO/H2 and CO/N2 selectivity was predicted by the ideal adsorbed solution theory (IAST). In general, the adsorbents modified with CuCl show better performance than pristine HKUST-1 on the CO separation from CO, H2, and N2 mixtures, including the CO adsorption capacity and the CO/H2, CO/N2 selectivity.