A preparation method of glutaraldehyde by one step oxidation of cyclopentene with peroxyformic acid is reported. The preparation is carried out in a mild reaction condition, time saving and without catalyst. The produ...A preparation method of glutaraldehyde by one step oxidation of cyclopentene with peroxyformic acid is reported. The preparation is carried out in a mild reaction condition, time saving and without catalyst. The product is identified by MS and IR measurements. The results showed that the highest yield of glutaraldehyde 56 7% is obtained at optimum molar ratio of n (hydrogen peroxide)∶ n (cyclopentene)∶ n (formic acid)=1∶3∶3, reaction temperature 35 ℃ and reaction time 1 h.展开更多
The adsorption structures of 4-cyanophenyl 4-butoxy benzoate(CPBOB) on graphite are studied by Scanning Tunneling Microscope(STM) at room temperature from the mixture of two different liquid crystals. STM images of CP...The adsorption structures of 4-cyanophenyl 4-butoxy benzoate(CPBOB) on graphite are studied by Scanning Tunneling Microscope(STM) at room temperature from the mixture of two different liquid crystals. STM images of CPBOB molecules are visualized for the first time with a near-atomic resolution. The adsorption structures are also investigated by molecular dynamical calculation. The STM images of CPBOB are stable in the period of 12 hours. These results indicate that liquid crystals of higher melting point on the surface of graphite can be studied by STM at the room temperature and the CPBOB mnolecules in a unit are orientated in the way of head to head.展开更多
文摘A preparation method of glutaraldehyde by one step oxidation of cyclopentene with peroxyformic acid is reported. The preparation is carried out in a mild reaction condition, time saving and without catalyst. The product is identified by MS and IR measurements. The results showed that the highest yield of glutaraldehyde 56 7% is obtained at optimum molar ratio of n (hydrogen peroxide)∶ n (cyclopentene)∶ n (formic acid)=1∶3∶3, reaction temperature 35 ℃ and reaction time 1 h.
文摘The adsorption structures of 4-cyanophenyl 4-butoxy benzoate(CPBOB) on graphite are studied by Scanning Tunneling Microscope(STM) at room temperature from the mixture of two different liquid crystals. STM images of CPBOB molecules are visualized for the first time with a near-atomic resolution. The adsorption structures are also investigated by molecular dynamical calculation. The STM images of CPBOB are stable in the period of 12 hours. These results indicate that liquid crystals of higher melting point on the surface of graphite can be studied by STM at the room temperature and the CPBOB mnolecules in a unit are orientated in the way of head to head.
