TRACER STUDY ON THE DISSOLVED HYDROGEN IN Fe, Cu, AND Fe-Cu PLATES

Catalytic behavior of dissolved hydrogen in Fe, Cu, Fe-Cu sheets in the Fischer-Tropsch reaction was investigated by using tritium (T-hydrogen) and 14C-carbon monoxide as tracers. The amount of preadsorbed T-hydrogen on the surface of Fe and Fe-Cu sheets mark-edly increased due to the addition of carbon monoxide. Methane was produced in addition to ethylene, ethane and propane on alumina-doped Fe and Fe-Cu, but did not on Fe, Fe-Cu, Cu, and alumina-doped Cu. These results were interpreted in terms of bulk diffusion of hydrogen in Fe and the occurrence of spillover of hydrogen from Fe to alumina

中性子照射したLiFに生成したトリチウムの分布

This study is concerned with the autoradiographical study on cohesive sites of tritium on the surface layer of neutron-irradiation LiF. Many linear lines were found in the autoradiographs, but some of these lines were not in the microphotographs. These results were discussed with reference to the studies on the temperature programmed desorption of tritium and those on the absorption u.v. spectra of the irradiated LiF. These results indicate that tritium accumulates preferentially on the lattice imperfections of step-edges of LiF