Enhancement of Methane Adsorption by Lithium Doping into Metal-Organic Framework Cu-BDC

Copper (ii) carboxylate, (cu-bdc), metal-organic-framework (mof) has been synthesized undersolvothermalconditions and used as a new adsorbent for the methane. the lithium doping intocu-bdc, (li-cu-bdc), is made by impregnating cu-bdc with an ethanol solution oflino_3, followed by heat treatment in vacuum. the adsorbent was characterized by x-ray diffraction (xrd), fourier transform infrared (ft-ir), thermogravimetric analysis (tga). inductively coupled plasma atomic emission spectrometry (icp-aes) and brunauer-emmet- teller (bet) technique. the sorption capacity of the methane on cu-bdc and li-cu-bdc range of pressure 1-20 bar and at 298 k was investigated by volumetric measurement. this work shows that li-cu-bdccompared with cu-bdc has higher sorption capacity for ch_4.