Graphite granular

Graphite granular Surface area porosity Conductivity /90 Rabaey et al. (2005)... 

In general, the purified boron carbide is ultimately obtained as a granular soHd that subsequendy may be molded or bonded into usehil shapes. To achieve high density and strength, it is hot pressed at 1800—2400°C in graphite molds. 

Of particular note we found improved selectivity with certain extiuded carbon supports versus granular carbons, graphitic carbons, metal oxides (titaiua and zircoitia), and carbon treated with zircoiua. Data shown in Figures 34.6 and 34.7 were generated in batch experiments using Ni/Re as catalytic metals. In Figure 34.6a,... 

Starting aaterial for their preparation and subsequent activation. Graphitized carbon blacks have low surface areas, usually less than 100 K /g and typically 5-30 u /g. They have a low capacity for low molecular weight analytes but have been used successfully for the isolation of heavier nonpolar analytes that might be difficult to recover from more active forms of carbon [169,170]. The most common form of carbon used for trace enrichment is granular activated carbon, generally prepared by tbe low temperature... 

In this method the PCM is mixed with expanded graphite in a compounding process. The result is a compound in granular form (Figure 123). 

Carbon and graphite resistor furnaces of different types can be operated up to about 2200-25 00°C. The sketch of a typical resistance furnace is shown in Fig. 6.1. It consists of an inner carbon furnace tube surrounded by packed granular carbon... 

Explosives such as PETN, RDX, HMX cannot be used as such for pressing because of their sensitivity and granular nature. The sensitivity is reduced considerably to safer limits by coating them with waxes or polymers. This process is called phlegmatizahon. In some cases, zinc stearate, barium stearate, graphite etc. 

Electron bomb fires can also be brought under control by using dry sand or other granular materials, such as slag, pumice, ash, kaolin, finely divided iron, graphite, etc. In this country, we have been using special coml powders, such as GI ... 

Granular graphite layers were used as the electrodes. Electrical contact was made by inserting one-eighth inch graphite rods through holes drilled... 

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