New Functions and their Applications of Carbon-Fluorine Bond

1.以V_2O_5、F_2和石墨为原料，在130℃的温度下制备了含氟氧化钒-石墨插层化合物（GICs）。红外、XPS和x射线衍射测量表明，GICs为含过量氧的2级C_* (VOF_3) F。时间电位和阻抗测量表明，C_<17.7> (VOF_3) F和C_<20.4> (VOF_3) F的扩散系数和电导率分别为3.8*10^<-10>cm^2s^<-1>,9.3*10^<-7> Scm^<-1>和4.5*10^<-10> cm^2s-1,2.7*10^<-7> Scm^<-1>。以高氧化态过渡金属氟化物为催化剂合成氟-石墨插层化合物。以AgF_3或NiF_3为催化剂，在室温和-80℃的温度下合成了氟石墨插层化合物。产物为第1+2至第4阶段化合物的混合物，组成物C_4F-C_<15>F。主要产品为第2阶段和第3阶段的混合物，组分C_9F-C_<10>F。热解石墨片的阶段1相c轴重复距离较大，为1.03 nm，表明形成了由半离子型和近离子型氟组成的双插层相。碳氟复合材料的电化学性能在硫酸和氯化钠溶液中的电化学测量表明，碳氟复合材料的腐蚀程度远小于纯镍。在碳氟复合电极上选择性地还原了悬浮在水溶液中的单溴苯。

1.Synthesis and electrochemical properties of vanadium oxide fluoride-graphite intercalation compounds (GICs)Vanadium oxide fluoride-GICs were prepared at 130ﾟC from V_2O_5, F_2 and graphite. IR,XPS and X-ray diffraction measurements revealed that the GICs were stage 2 C_* (VOF_3) F containing excess oxygens. Chronopotentiometry and impedance measurements showed that diffusion coefficients and electrical conductivities of C_<17.7> (VOF_3) F and C_<20.4> (VOF_3) F were 3.8*10^<-10>cm^2s^<-1>,9.3*10^<-7> Scm^<-1> and 4.5*10^<-10> cm^2s-1,2.7*10^<-7> Scm^<-1>, respectively.2.Synthesis of fluorine-graphite intercalation compounds using high oxidation state transition metal fluorides as catalysts.The fluorine-graphite intercalation compounds were synthesized at room temperature and -80ﾟC using AgF_3 or NiF_3 as a catalyst. The products were a mixture of stage 1+2 to stage 4 compounds with compositions, C_4F-C_<15>F.Main products were mixtures of stage 2 and 3 with compositions, C_9F-C_<10>F.Stage 1 phase with pyrolytic graphite sheet showed a large c-axis repeat distance, 1.03 nm, indicating the formation of biintercalation phase consisting of semi-ionic and nearly ionic fluorines.3.Electrochemical properties of carbon-fluorine compositeElectrochemical measurements in sulfuric acid and sodium chloride solutions showed that the corrosion was much less in carbon-fluorine compsite than in pure nickel. Monobromobenzene suspended in aqueous solution was selectively reduced at carbon-fluorine composite electrode.