Abstract

Treatment of K 2CO 3-activated carbon and K 2CO 3-coal in a nitrogen flow at 1100 K results in the formation of metallic potassium. X-ray analysis revealed that the heat-treated samples have structures similar to those of potassium-graphite intercalation compounds. Potassium acts probably as a graphitizing agent. By heat treatment of K 2CO 3-graphite under the same conditions metallic potassium was not formed and neither could intercalation structures be detected by X-ray analysis.

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