SYNTHESIS, ADSORPTION ABILITY AND ACTIVITY OF MOF-199 IN THE REACTION OF METHANOL SYNTHESIS FROM CARBON OXIDES

Abstract

Metal-organic framework (MOF) is a material which can be applied in many fields. In this research MOF-199 was synthesized using solvothermal method. Based on this product, ZnO@MOF-199 and Cu,ZnO@MOF-199 were synthesized and their properties were characterized. The adsorption capacity of CO₂ and CH4 on MOF-199 were investigated and results show that adsorption capacity of CO2 is higher than that of CH4 at 30 bar and 30 ^oC, reaching 277.25 cm³/g and 170.38 cm³/g, respectively. The catalytic activity of MOF-199, Cu,ZnO@MOF-199 and ZnO@MOF-199 were also tested for methanol production from synthesis gas at atmospheric pressure and 200 ^oC. Methanol yield after 1 h for MOF-199 and Cu,ZnO@MOF-199 reached 157.9 and 27.63 μmol.g_cat^-1.h^-1 , respectively. Meanwhile, the methanol yield for catalyst ZnO@MOF-199 is not significant. However, the structure of MOF-199 collapsed after 60 minutes of reaction.