Nanofibers, graphitic

Bessel, C. et al., Graphite nanofibers as an electrode for fuel cell applications, /. Phys. Chem., 105, 1115, 2001. 

SEM of graphitic nanofiber prepared by decomposition of C2H4 H2 = 1 4 gas flow over NiCu alloy powder. (Reproduced from Xu, W.-C., Takahashi, K., Matsuo, Y., Hattori, Y., Kumagai, M., Ishiyama, S., Kanekoc, K., and Iijima, S., Int. ]. Hydrogen Energ. 32(12), 2504-2512, 2007. With permission.)... 

Hydrogen Storage in Graphitic Nanofibers as a Function of Temperature and Interlayer Distance, at 100 bars... 

Lee, C.-L., et al., Preparation of Pt nanoparticles on carbon nanotubes and graphite nanofibers via self-regulated reduction of surfactants and their application as electrochemical catalyst. Electrochemistry Communications, 2005. 7(4) p. 453-458. 

Pt (5 wt%) supported on platelet and ribbon graphite nanofibers exhibited similar activities to those observed by Pt (25 wt°/o) on carbon black [138], This phenomenon was attributed to the crystallographic orientations adopted by the catalyst particles dispersed on graphitic nanofiber structures [139]. Also, the electrocatalysts supported on CNFs were less susceptible to CO poisoning than Pt supported on carbon black. 

True bimetallic molecular precursors have been used to prepare PtRu catalysts. Steigerwalt, Deluga, and Lukehart impregnated the complex (77-C2H4) (Cl)Pt(77-Cl)2Ru(Cl)(773 r/2-2,7-dimethyloctadienediyl) on graphitic nanofibers via solvent evaporation. The deposited complex was subsequently decomposed by reductive annealing up to 650°C. 

R. Baker, A. Chambers, C. Park, N. Rodriguez, R. Terry, Hydrogen storage in graphite nanofibers, J. Phys. Chem. B 103 (1998) 277-281. 

CNFs carbon nanofibers GNFs graphitic nanofibers AC activated carbon... 

Further novel observations are the hydroformylation of ethylene over graphite nanofiber-supported Rh catalysts,270 the transformation of a mixture of isomeric octenes to Cg-aldehydes,271 and the preparation of linear long-chain dialdehydes by the hydroformylation of linear a,co-dienes.272... 

Abstract High-pressure hydrogenation of the single-walled carbon nanotubes, graphite nanofibers and fullerenes C60 was developed. Produced samples have been studied by their combustion, gas thermodesorption, mass-spectroscopy, X-ray, IR and Raman scattering spectroscopes. 

Fig. 11.2 Temperature dependence of the gas pressure in a preliminarily evacuated volume (left vertical scale) and its recalculation into the amount of hydrogen evolved from the sample (right scale) upon heating at a rate of 20 K/min for single-walled carbon nanotubes (SWNTs) and graphite nanofibers (GNFs, two heating cycles) saturated with hydrogen at a pressure of 9 GPa and temperatures up to 450°C...

Fig. 11.5 IR diffuse reflection spectra of graphite nanofibers and single-walled carbon nanotubes in the initial state, after saturation with hydrogen at 9 GPa, after removal of about 40% of absorbed hydrogen, and after degassing annealing. T = 300 K...

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