We report the result that various forms of solid carbon can be converted, essentially completely, to well crystallized diamond below atmospheric pressure if mixed with small amounts (ca. 1–10 wt.%) of metallic Mo (or Cu or Ni) and heated in a pure H2[or H2–(1%)CH4] plasma, excited typically in a 2.45 GHz microwave field at 600–1000 °C.
R. Roy, H. S. Dewan and P. Ravindranathan, J. Mater. Chem., 1993, 3, 685 DOI: 10.1039/JM9930300685
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