Graphitizing and non-graphitizing carbons
Graphitizing and non-graphitizing carbons (alternatively graphitizable and non-graphitizable carbon) are the two categories of carbon produced by pyrolysis of organic materials. Rosalind Franklin first identified them in a 1951 paper in Proceedings of the Royal Society.
Source: Wikipedia — Graphitizing and non-graphitizing carbons (CC BY-SA 4.0)