In-situ ft-ir study of co and H_2 adsorption on a pt/Al_2O_3 catalyst

摘要

Infrared spectra are reported of Pt/Al_2O_3 exposed to CO and H_2 at different conditions. Two broad bands appeared in the spectra at 2180 at 2550cm~(-1) due to the catalyst Pt/Al_2O_3 itself and became stronger while increasing the temperature. Adsorption of CO on Pt/Al_2O_3 gave an infrared band at 2085cm~(-1), and when H_2 was adsorbed, methane was formed due to reaction of H_2 and the pollutant CO, while increasing the temperature, above 673K for 1 hour or so, when the pollutant CO had almost disappeared during the reaction, a band at 2060cm~(-1) appeared due to H_2 adsorption on Pt/Al_2O_3.