High-pressure hydrogenated carbon

Bhattachaijee et al. [98] reported that nitrile rubber can be selectively hydroformylated in the presence of RhH(CO)(PPh3)3 and RhCl(CO)(PPh3)2 under high pressure of carbon monoxide and hydrogen. They found that RhH(CO)(PPh3)3 was more efficient than RhCl(CO)(PPh3)2. However, both catalysts offered se-... 

HYTORT A process for making gaseous and liquid fuels from oil shale. Developed by the Institute of Gas Technology, Chicago, in 1959. It uses high-pressure hydrogenation, which recovers more of the carbon from shale than does pyrolysis. In 1981 a joint venture of IGT with the Phillips Petroleum Company was formed in order to make a feasibility study. 

The first catalyst used in hydroformylation was cobalt. Under hydroformylation conditions at high pressure of carbon monoxide and hydrogen, a hydrido-cobalt-tetracarbonyl complex (HCo(CO)4) is formed from precursors like cobalt acetate (Fig. 4). This complex is commonly accepted as the catalytic active species in the cobalt-catalyzed hydroformylation entering the reaction cycle according to Heck and Breslow (1960) (Fig. 5) [20-23]. 

Roche Research Center, Hoffmann-La Roche Inc., Nutley, NJ 07110. The authors would like to thank Mr. Ted Carbone and Mr. Louis Portland for their technical assistance in the high-pressure hydrogenation. 

SYNTHESIS OF ACTIVATED CARBON FIBERS FOR HIGH-PRESSURE HYDROGEN STORAGE... 

Synthesis of Activated Carbon Fibers for High-Pressure Hydrogen Storage... 

Most gases do not affect refractory bricks. Under high pressure hydrogen gas can reduce silicon dioxide. At appr. 400-800 °C, carbon monoxide is converted into carbon and carbon dioxide. The carbon is deposited on the brick and this may lead to brick s compression. However, a solution has been found. The decomposition of carbon monoxide appeared to be stimulated by certain iron compounds. By firing the bricks at a sufficiently high temperature, you can convert these iron compounds into iron silicates which do not act as catalysts. 

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. 

High-Pressure Hydrogenated Single-Walled Carbon Nanotubes and Nanofibers... 

K.P. Meletov et al., Raman study of the high-pressure hydrogenated single-wall carbon nanotubes In search of chemically bonded and adsorbed molecular hydrogen. Chem. Phys. Lett. 433, 335 (2007)... 

---