USE OF GRAPHITIZED CARBON BLACKS FOR THE CHROMATOGRAPHIC SEPARATION OF LIGHT HYDROCARBONS AND OTHER VOLATILE GASES

摘要

Graphitized carbon blacks (GCBs) have been prepared for use in gas-solid chromatographic separations of light hydrocarbons and other volatile gases. Preparation of the GCBs involved high temperature furnace processes performed in inert atmospheres to yield a family of carbons. This carbon family possesses surface areas ranging from 5 to 250 meters~2/gram. The GCBs possessing surface areas of 100 meters~2/gram or less have no pores associated with the particles, whereas the GCB possessing a surface area of 250 meters~2/gram possesses mesopores with a mean pore diameter of 100A. The wide range of physical characteristics allows for tailored chromatographic performance characteristics.