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0215U007251,
0111U007235
,
Nanocomposite porous materials on the basis of titanium dioxide and carbon for technologies of using and accumulation of hydrogen.
Manorik Petro Andrievich; Ilyin Volodimir Georgievich,
19-02-2015
L.V.Pysarzhevsky Institute of Physical Chemistry of National Academy of Science of Ukraine
With help of methods of low-temperature nitrogen adsorption, XPS, SEM, XRD, TPD MS, optical and vibrational spectroscopy methods was investigated the structural and sorption properties and elemental composition of active titanium-oxide additive polymer membranes. The effect of the concentration proton-generating additives on the total and specific proton conductivity of composite polymer membranes depending on the concentration of proton-generating additives and relative humidity has been evaluated.The conductivity of the composite membrane Nafion / TiO2 with TiO2 concentration 1-3% and relative humidity 20-70% at was investigated. It was established that the conductivity of such structures increases with increasing humidity and amount of TiO2 in the composite Nafion film. Based on a study of adsorption properties (nitrogen, hydrogen) nanoporous carbon materials (HM) received during pyrolysis (800 ° C, Ar) natural organic matter (stone fruit shell plum and peach), followed by acidic (0.1 - 1.0 M HCl ) and termo activation (H2O 750 - 850 ° C), was found a strong influence of the starting material, conditions of post synthetic activation porous structure (Vmi - to 0,51sm3 / g ? Smi 1550m2 / h; Vsuper mi - to 0,25sm3 / g ; Ssupermi ? 340m2 / h; Vme - to 0.63 cm3 / g ? Sme 85m2 / h) and the adsorption of hydrogen (1.3 - 1.9% wt. at 77 K and 1 atm) obtained in the VM. The influence of the nature of the metal in multilayer Co / C and Ni / C nanocomposite fibers obtained during pyrolysis (1000 oC, H2) and acid activation (HNO3) Co (II) - and Ni (II) fulvativ, the porous structure and adsorption of hydrogen in nanotubes (NTs) based on them was shown. We set increasing of specific adsorption of H 2 (from 9.4 to 18.1 mg / m 2 at 77 K and 760 Torr) on the surface of HT based on Ni / C-composite by forming submikropores in the walls.
Леоненко Є.В.
Тельбіз Г.М.
Філоненко С.М.
Щербань Н.Д.
Яремов П.С.
2020-04-02
Updated: 2025-12-13
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