IOP Conference Series Materials Science and Engineering · 2019 · 18 citations · 5 references
Natural SciencesChemical EngineeringMaterials ScienceMaterials ChemistrySurface ChemistrySurface ScienceInorganic MaterialsMetal OxidesPorous MaterialsSurface AdsorptionAdsorption IsothermsCrystallinityDegree Of CrystallinityHigh-surface-area MaterialsMetal-organic Framework AdsorptionMetal-organic Framework SynthesisMetal-organic FrameworksPore Volume
Abstract MOFs have considered as promising materials for CO2 adsorption due to their excellent chemical stability, large pore volume, and high surface area. In this study, MOF-199 has been synthesized using the solvent-thermal method with focusing on the significant parameters that affecting the structure of the MOF-199 (solvent, synthesis time, and temperature). Produced MOF-199 samples were characterized by electron scan microscope, X-ray diffraction, and microporosimetric analysis. High crystallinity degree and high surface area were found at 1:1 of the H2O: C2H5OH (within the solvents range from 1:1 to 1:2 ratios), whereas the changing of the synthesis duration from 18 to 48 h, and synthesis temperatures from 40 to 140 °C have revealed that the best synthesis conditions are 100 °C for 48 h. The appropriate activation condition has been determined to be 60 °C for 16 h. For CO2 adsorption isotherms on MOF-199 were at a temperature (36, 40, 60, and 70) °C and pressure range (0-5) bar using a volumetric technique. Temkin, Freundlic and Langmuir isotherm models have been used to analyze the equilibrium data. This research presents the effect of significant parameters on the synthesis of MOF-199 to understand their influence on the formation of MOF structures and the CO2 adsorption capacities.
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