Construction of Hierarchical Pores Membrane by Growing Metal Organic Frameworks on Copper Foams (original) (raw)
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Energy storage is one of the major challenges during the last decades. Natural gas adsorption on porous materials has notable advantages in comparison with the other approaches. Due to the lack of adsorption information about Cu-BDC (copper terephthalate), it was synthesized by two different solvent separation procedures and identified using X-ray diffraction (XRD), Brunauer-Emmet-Telller (BET) and thermogravimetric analysis (TGA) techniques. Moreover, equilibrium adsorption measurements were performed for CH4 and CO2 gases in the pressure range 0-50 bar at two various temperatures (293 and 323 K), and experimental adsorption data were modeled with adsorption isotherms. Also, the sample synthesized by the new solvent separation procedure had 918 m2/gr surface area and 0.42 cm3/gr pore volume which were respectively 45% and 50% higher than the traditional method. In addition, this sample has shown CO2 and CH4 adsorption capacity (16.72 and 13.23 mmol gr-1) were desirable in compariso...
2020
DOI:10.17605/OSF.IO/UY27S Page 1 Abstract— Copper foam was prepared using copper powder and epoxy resin with sodium bicarbonate as a foaming agent by powder metallurgy technique. Copper powder was prepared by water atomization technique; it was mixed with 12.5, 25 and 50 wt. % epoxy resin, then sintered at 600 0C and 800 0C in an argon atmosphere for one hour. Microstructure was estimated by both optical and FE-SEM which indicated the homogeneous distribution of irregular shape pores all over copper matrix. Phase structure was investigated by XRD that gives only peaks corresponding to copper metal in all samples. Density and porosity were measured by Archimedes principle, which indicated that sample containing 25 wt. % epoxy resin Cu foam sample has the highest relative porosity at 800 oC. Compressive strength for samples sintered at the 800 oC indicated that sample containing 50 wt. % epoxy has the lowest compressive strength value. The three copper foam samples have been tested as...