A tantalum monocarbide filament heated above 600 K acts as a catalyst for the equilibration of a mixture of hydrogen and deuterium. The efficiency of exchange rose to about 3 % at a filament temperature of 1000 K and was then constant up to 1400 K. The shape of the equilibration curve suggests that the reaction took place by the Bonhoeffer-Farkas mechanism.
A. J. Clark, R. P. H. Gasser and P. Whitehead, Trans. Faraday Soc., 1970, 66, 2085 DOI: 10.1039/TF9706602085
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