Carbon Dioxide Adsorption on MOF-199 Metal-Organic Framework at High Pressure

1st International Conference on Mechanical Electronic and Biosystem Engineering

Alrubaye, Rana Th. A.^1 ; Kareem, Huda M.^1

Chemical Engineering Department, College of Engineering, University of Baghdad, Jadrai, Baghdad, Iraq^1

关键词: Activation conditions;    Carbon dioxide adsorption;    Langmuir isotherm models;    Metal organic framework;    Solvent-thermal method;    Synthesis conditions;    Synthesis temperatures;    Volumetric techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/557/1/012060/pdf
DOI  :  10.1088/1757-899X/557/1/012060

来源: IOP

【 摘 要 】

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.