The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential s...The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.展开更多
The promotion effects of some triflates in the copolymerization of styrene and CO were studied.It was found that PdCl2showed good catalytic activity in the exist of some triflates and among them Cu（OTf）2showed the b...The promotion effects of some triflates in the copolymerization of styrene and CO were studied.It was found that PdCl2showed good catalytic activity in the exist of some triflates and among them Cu（OTf）2showed the best promotion effects.Under the reaction conditions: 1×10-4mol PdCl2,5×10-4mol bipy,2×10-4mol Cu（OTf）2,3×10-3mol BQ,4ml methanol,10ml styrene,T=333K,P=3.0MPa,the catalytic activity of PdCl2/ bipy / M（OTf）nis 18,000gPK/molPd.h.The effects of the amount of Cu（OTf）2and trific acid on PdCl2catalytic activity were also studied.Mechanism of copolymerization catalyzed by this catalytic system wasdiscussed.展开更多
文摘The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.
文摘The promotion effects of some triflates in the copolymerization of styrene and CO were studied.It was found that PdCl2showed good catalytic activity in the exist of some triflates and among them Cu（OTf）2showed the best promotion effects.Under the reaction conditions: 1×10-4mol PdCl2,5×10-4mol bipy,2×10-4mol Cu（OTf）2,3×10-3mol BQ,4ml methanol,10ml styrene,T=333K,P=3.0MPa,the catalytic activity of PdCl2/ bipy / M（OTf）nis 18,000gPK/molPd.h.The effects of the amount of Cu（OTf）2and trific acid on PdCl2catalytic activity were also studied.Mechanism of copolymerization catalyzed by this catalytic system wasdiscussed.
