Synthesis, characterisation, adsorption ability and activity of Cu,ZnO@UiO-66 in methanol synthesis

Metal-organic framework UiO-66 was synthesised by solvothermal method. The influence of synthesis conditions on the quality of UiO-66 was studied. The obtained material was characterised by XRD, IR, TGA, SEM, TEM, AAS and nitrogen physisorption measurements (BET). Physisorption measurement of different gases (CO2, H-2, CH4 and CO2/CH4) was carried out using a high pressure volumetric analyser. Synthesised UiO-66 in the form of ball shaped crystals possessed high surface areas of up to 1041 m(2).g(-1), micropore volume of 0.913 cm(3).g(-1), pore radius of 15 angstrom and thermal stability of up to 423 degrees C. According to experimental results, at 30 bar, CO2 storage capacity of the synthesised UiO-66 is nine times higher than that of H-2 and four times higher than that of CH4. The Cu@UiO-66 and Cu,ZnO@UiO-66 catalysts were prepared and tested in the hydrogenation of CO and CO2. As it followed from investigation, Cu,ZnO@UiO-66 catalyst has been shown to be the best one with the yield of methanol reaching 229.04 mu mol. g(-1).h(-1) and 153.93 mu mol. g(-1).h(-1) in the hydrogenation of CO and CO2, respectively.