The reactions of isocyanate on Pt/Al//2O//3 were investigated by infrared spectroscopy combined with mass spectrometry. Its stability was found to be very sensitive to the conditions under which the isocyanate was formed. It decreased with the surface concentration of chemisorbed oxygen and with the Pt content of the catalyst. The number of isocyanate species in many cases greatly exceeded the number of surface Pt atoms, indicating that a significant proportion of the isocyanate is located on the carrier. The reactivity order of the gases depended on the temperature. In the presence of water at 200-400 degree C the hydrolysis of surface isocyanate into ammonia was almost complete.
|Number of pages||4|
|Publication status||Published - Jan 1 1977|
|Event||Proc of the Int Vac Congr, 7th, and the Int Conf on Solid Surf, 3rd, of the Int Union for Vac Sci, Tech and Appl - Vienna, Austria|
Duration: Sep 12 1977 → Sep 16 1977
|Other||Proc of the Int Vac Congr, 7th, and the Int Conf on Solid Surf, 3rd, of the Int Union for Vac Sci, Tech and Appl|
|Period||9/12/77 → 9/16/77|
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