Influence of Carbon Material Supports on the Efficiency of the Isotope Exchange between Dalargine and Tritium

Radiochemistry - Isotope exchange between dalargine applied onto various supports [glass, activated carbon, few-layer graphite (FLG)] and molecular tritium, performed with activation on a tungsten...     

The synthesis and properties of highly exfoliated graphites from fluorinated graphite intercalation compounds

A series of new highly exfoliated graphites were synthesized from fluorinated graphite intercalation compounds of compositions C₂F·xR (R = ClF₃, (CH₃)₂CO, CH₃CN, C₆H₆, CCl₄). The exfoliation degree of these materials reaches more than 2000 times, indicating a significantly higher exfoliated state than observed for the conventional expanded graphites derived from graphite bisulphate or nitrate. These exfoliated graphites have increased interlayer distances, specific surface areas as high as 170–370 m²/g, low bulk densities of 0.4–0.7 g/L, and good sorption capacities towards a range of organic and inorganic liquids. The influence of the nature of the intercalated molecules on the properties of the exfoliated graphite is discussed.