Facile and fast, one pot microwave synthesis of metal organic framework copper terephthalate and study CO2 and CH4 adsorption on it

Abstract

Copper terephthalate, metal organic framework (MOF) [Cu(BDC)] (H 2 BDC = benzene-1,4-di-carboxylic acid) was synthesized by simple and fast microwave method. Different samples were synthesized by modifying the irradiation time, irradiation power and concentrations of reactants. The samples were characterized by means of FT-IR analysis, X-ray diffraction (XRD), N 2 adsorption/ desorption isotherms, scanning electron microscopy, elemental analysis and thermo gravimetric analysis. The effect of synthesis conditions on crystallinity, crystal size, specific surface area and morphology of the prepared samples were investigated. The XRD patterns of all synthesized samples confirmed the formation of Cu(BDC) without any phase impurities. The samples with the highest Langmuir surface area of 624 and 611 m 2 /g were considered for CO 2 and CH 4 adsorption isotherms. Adsorption isotherms of CH 4 and CO 2 were determined by volumetric method in the range of 0.1-60 bar pressure at normal temperature. The highest adsorption capacity for CO 2 and CH 4 was determined 10.4 and 5.2 mmol/g, respectively at 303.15 K and 47.7 bar equilibrium pressure. The highest & Azadeh Tadjarodi

Toluene adsorption on porous Cu–BDC@OAC composite at various operating conditions: optimization by response surface methodology

“…8,9,16,17 Metal-organic frameworks (MOFs) are known to have explicit pore structures, a high specic surface area and a high pore volume, which makes them good candidates for many applications, such as gas storage and adsorption. 18,19 Compared to other traditional porous materials like activated carbon, MOFs have excellent advantages for the removal of VOCs due to high specic surface area, diverse structural composition, a large number of active adsorption sites and cation-p bonding through electrostatic attraction with a benzene ring. 20 A large number of MOF materials are synthesized for VOCs adsorption, which were design to display high selectivity or capacity.…”

“…The Cu-BDC MOF is oen water stable and can be used as an adsorbent to remove pollutants and gas storage. 19,30 By combining with other materials, the characteristics of MOFs can be enhanced to a greater extent for improved functionality/stability, simplicity of preparation and selectivity of operation. For example, the composite Cu-BTC@GO (comprising of Cu-BTC and graphite oxide) improves toluene adsorption capacity.…”

“…Aer Cu-BDC is combined with oxidized activated carbon, the hydrophobicity and specic surface area are increased by synergistic action. 19,30,37 Therefore, this article aimed to synthesize microporous Cu-BDC@OAC composite from incorporating Cu-BDC MOF into oxidized activated carbon with high specic surface area and porosity to enhance the performance of toluene adsorption at various operating conditions. Also, the other purpose of this study is to present a systematic method to determine what range of essential variables has a higher effect on the VOC adsorption.…”

金属有機構造体を用いたアルキルベンゼン類の速度論的分割

“…TPA _ Cu is an exception; from the average pore size and d-spacing, the retention times were estimated to be longer than those for TPA _ Al. If the reported pore size of 2.14 nm is accepted 29) , the relationship may be better understood. However, the reported N2 adsorption-desorption isotherm 29) is very different from ours ( Fig.…”

“…If the reported pore size of 2.14 nm is accepted 29) , the relationship may be better understood. However, the reported N2 adsorption-desorption isotherm 29) is very different from ours ( Fig. 3 d)) and the clearly observed hysteresis contradicts our plateau isotherm in the corresponding pressure region.…”