Cu-BTC@GO Composite Materials Mechano-chemistry Synthesis And Forming And Its Adsorption Performance Research

Alkanes, alkenes, aromatic hydrocarbons and organic alcohol are the main components of oil vapor, these gas’ s volatilization will not only cause economic loss, but also cause serious damage to the ecological environment and human health, and the recovery of oil vapor is imminent. In recent years, the MOFs materials with ultrahigh surface area and abundant porosity, skeleton structure diversification, tunable pore structure and surface properties widely used in the field of adsorption and separation of VOCs. This paper mainly studies the Cu-BTC@Go composite materials mechano-chemistry synthesis and forming and its adsorption performance research, mainly involves Cu-BTC@Go composite materials mechano-chemistry synthesis and characterization, water stable testing, ten kinds of VOCs components contain methanol, ethylene, propylene, ethane, propane, C5, C6 and C7 normal paraffin, toluene and benzene adsorption performance research, Cu-BTC and Cu-BTC@Go granulation forming and in-situ growth molding body and test adsorption isotherm of methanol and benzene, this study belongs to the fields of environmental science, chemical engineering and materials forming, and has important research value and industrial application prospect.The effects of synthesis condition on its specific surface area and porosity structure parameters, including ball mill parameters and purification methods, are investigated. Results shows that ball grinding mill bead number is 3, for 60 min and 1100 r/min, ethanol as the activation reagent can synthesize large specific surface area and high pore volume of Cu-BTC@GO composite materials. The highest BET specific surface area is 1362.0 m2/g, total pore volume is 0.8536 cm3/g,micropore pore volume is 0.4397 cm3/g.The effects of graphene oxide on Cu-BTC@GO water stability. Results show that soaked in water for 5 hours, Cu-BTC material XRD characteristic peak intensity, BET specific surface area fell by 65%, the pore structure was almost completely disappeared, micropore pore volume decreased by 62 %, appeared lots of tiny rod structures; Soaked in water for 10 hours, BET specific surface area and pore volume is almost entirely disappeared, crystal surface appears a large number of rod structures. Soaked in water for 10 hours, Cu-BTC@GO material BET surface area is still more than 1000 m2/g, micropore pore volume is above 0.4 cm3/g, the water stability of Cu-BTC@GO composites is greatly higher than that of Cu-BTC.This paper studies the adsorption properties of Cu-BTC@GO to ten VOCs components. Results show that Cu-BTC@GO adsorption properties of these VOCs have high adsorption volume, are greater than the amount of adsorption of Cu-BTC, preparation of this paper or hydrothermal method, much higher than conventional adsorbents such as molecular sieve adsorption, zeolite, etc. The propylene and ethylene adsorption selectivity of Cu-BTC@GO reach 4.5 and 5.46, respectively. Cu-BTC@GO have a good separation for C2~C3 alkane and alkene gas mixture.This paper studies the growth of granulation formation and in situ prepared Cu-BTC and Cu-BTC@GO shaped body, and determination of methanol and benzene adsorption isotherm. Cu-BTC@GO pellets BET surface area is up to 1059.2 m2/g, compared with the material before molding fell by only 2.8 percent, to retain the integrity of MOFs powder crystal structure and thermal stability, the saturating adsorption capacity of methanol and benzene are 7.27 mmol/g and 6.23 mmol/g, compared to powder, adsorption capacity Cu-BTC@GO decreases 12 % and 26.7 %, respectively; the saturating adsorption capacity of methanol and benzene are 4.85 mmol/g and 2.47 mmol/g, compared to powder, Cu-BTC adsorption capacity decreases by 70 % and 58.8 %, respectively. Cu-BTC@GO pellets have good adsorption properties for methanol and benzene. By in situ growth method the Cu-BTC is immersed in the cordierite surface, to get Cu-BTC@cordierite molded body, cordierite can be seen from the SEM surface growth of many Cu-BTC crystals.