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Rapid solvothermal synthesis of microporous UiO-66 particles for carbon dioxide capture
배선영,Nabilah Zaini,Khairul Sozana Nor Kamarudin,유계상,김진수,Mohd Roslee Othman 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.3
One of the important metal-organic frameworks known as UiO-66 has received significant attention recently due to its unprecedented chemical and thermal stability, with exceptionally high surface area. We prepared UiO-66 particles by a rapid solvothermal method which took only 30min at 120 oC to prepare, compared to the previous work which took longer than 12 h. Changing the precursor’s concentration ratio from 0.5 to 1.5 and reaction temperature from 80 oC to 140 oC resulted in the increase of UiO-66 particle size from 30 to 150 nm. The highest surface area of ca. 1,300m2/g was achieved at concentration ratio of 1 and temperature of 120 oC with bi-modal pore sizes of ca 0.60 nm and 1.25 nm, respectively. The UiO-66 particles with the highest surface area were then employed to capture carbon dioxide from a binary gas mixture. Results from CO2 adsorption capacity measurement using UiO-66 indicate that the adsorbent was capable of capturing 1.3611mmol/g at pressure of 1.5-1.7 bar and flowrate of 300 cm3/min.