We synthesized vinylieriazolyl ketone through Knoevenagel reaction of α-triazolylpinacolone with 4-chlorophenyl acetaldehyde using KF-Al2O3 as a catalyst. The effect of the reaction conditions, such as the amount of ...We synthesized vinylieriazolyl ketone through Knoevenagel reaction of α-triazolylpinacolone with 4-chlorophenyl acetaldehyde using KF-Al2O3 as a catalyst. The effect of the reaction conditions, such as the amount of catalyst, temperature, the molar ratio of 4-chlorophenyl acetaldehyde to α-triazolylpinacolone and different PEGs was investigated. The optimum reaction conditions are: the molar ratio of 4-chlorophenyl acetaldehyde to α-triazolylpinacolone is 1.2∶1, reaction time is 0.5 h, reaction temperature is 75～80℃, the phase transfer is PEG4000. Under these conditions, the yield of vinylieriazolyl ketone could reach up to 95.2%.展开更多
A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2...A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2 has good charge/discharge circle capability.It is a new cathode material for lithium ion batteries.展开更多
文摘We synthesized vinylieriazolyl ketone through Knoevenagel reaction of α-triazolylpinacolone with 4-chlorophenyl acetaldehyde using KF-Al2O3 as a catalyst. The effect of the reaction conditions, such as the amount of catalyst, temperature, the molar ratio of 4-chlorophenyl acetaldehyde to α-triazolylpinacolone and different PEGs was investigated. The optimum reaction conditions are: the molar ratio of 4-chlorophenyl acetaldehyde to α-triazolylpinacolone is 1.2∶1, reaction time is 0.5 h, reaction temperature is 75～80℃, the phase transfer is PEG4000. Under these conditions, the yield of vinylieriazolyl ketone could reach up to 95.2%.
文摘A new cathode material for lithium ion batteries was synthesized by sol-gel technique and tested by XRD,SEM and charge/discharge at a constant current density of 0.2 mA/cm2.The results show that Li Ni0.8Co0.18Al0.02O2 has good charge/discharge circle capability.It is a new cathode material for lithium ion batteries.
