Sorption of Methaneand Carbon Dioxideon Nano Porous Zinc Carboxylate Metal-Organic Framework

Zinc (II) tricarboxylate(Zn-BTC)with metal-organic framework (MOF) has been synthesized forthe first time under solvothermalconditions andhas been tested as an adsorbent for methane and carbon dioxide at standard temperature and pressure.The adsorbent was characterized by means of X-ray diffraction(XRD),Brunauer-Emmet-Teller (BET), Fourier transform infrared (FT-IR) and scanning electron microscopy (SEM).Sorptioncapacityof the methane and carbon dioxide onZn-BTC in the range of pressure 1- 20 bar and at 298Kwas investigated by volumetric measurement. This resultsshow that Zn-BTC has higher sorption capacity methaneat 20 bar compared to carbon dioxide. The high sorption capacity of this adsorbent for methaneis attributed to large number of open metal site and the appropriate pore diameter of frameworkthat caused higher interaction for the methane at between methaneand carbon dioxide,suggests that (Zn-BTC) is a potential adsorbent for the separation of methane from gas mixtures.