Catalytic reduction of NO by CO over rhodium catalysts: 3. The role of surface isocyanate species
Journal of Catalysis, 2000•Elsevier
The formation, stability and reactivity of surface isocyanate species with CO, NO, and O2 has
been examined over Rh/TiO2 (W6+) catalysts, under conditions of NO reduction by CO,
using FTIR and transient MS techniques. It has been found that W6+ doping of TiO2 results
in stabilization of the Rh–NCO species and in expansion of the temperature window of N2O
formation toward lower temperatures by ca. 50° C. Surface isocyanates react with NO to
yield gas-phase N2O, thus providing an alternative route for the production of nitrous oxide.
been examined over Rh/TiO2 (W6+) catalysts, under conditions of NO reduction by CO,
using FTIR and transient MS techniques. It has been found that W6+ doping of TiO2 results
in stabilization of the Rh–NCO species and in expansion of the temperature window of N2O
formation toward lower temperatures by ca. 50° C. Surface isocyanates react with NO to
yield gas-phase N2O, thus providing an alternative route for the production of nitrous oxide.
The formation, stability and reactivity of surface isocyanate species with CO, NO, and O2 has been examined over Rh/TiO2(W6+) catalysts, under conditions of NO reduction by CO, using FTIR and transient MS techniques. It has been found that W6+ doping of TiO2 results in stabilization of the Rh–NCO species and in expansion of the temperature window of N2O formation toward lower temperatures by ca. 50°C. Surface isocyanates react with NO to yield gas-phase N2O, thus providing an alternative route for the production of nitrous oxide.
Elsevier
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