Synthesis, characterisation, adsorption ability and activity of Cu,ZnO@UiO-66 in methanol synthesis
by Nguyen Thi Thuy Van; Luu Cam Loc; Nguyen Tri; Hoang Tien Cuong
International Journal of Nanotechnology (IJNT), Vol. 12, No. 5/6/7, 2015

Abstract: 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, H₂, 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 m².g⁻¹, micropore volume of 0.913 cm³.g⁻¹, pore radius of 15 and thermal stability of up to 423C. According to experimental results, at 30 bar, CO₂ storage capacity of the synthesised UiO-66 is nine times higher than that of H₂ 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 μmol.g⁻¹.h⁻¹ and 153.93 μmol.g⁻¹.h⁻¹in the hydrogenation of CO and CO₂, respectively.

Online publication date: Sun, 08-Mar-2015

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