Structural characterization of PdPt particles in natural-gas-oxidation catalyst – Ex-situ and in-situ thermal aging studies
Research output: Other conference contribution › Paper, poster or abstract › Scientific
|Publication status||Published - Jun 2016|
|Event||17th Nordic Symposium on Catalysis - University of Lund, Lund, Sweden|
Duration: 14 Jun 2016 → 16 Jun 2016
|Conference||17th Nordic Symposium on Catalysis|
|Period||14/06/16 → 16/06/16|
Natural gas (NG) is a potential sustainable energy source for vehicles. Exhaust gases of NG vehicles contain, unfortunately, unburned CH4 which is a potential greenhouse gas. Pd-based catalysts are active for CH4 combustion. However, their deactivation, caused by e.g. thermal aging, is a problem. CH4 oxidation activity of Pd-based catalysts decreases e.g. when PdO reduces to metallic Pd and when PdO particles sinter at elevated temperatures. The catalysts have to have considerable efficiency and durability in various atmospheres and temperature ranges. The aim was to study the structural changes of noble metal particles in the natural-gas-oxidation catalyst at elevated temperatures in synthetic air and in low-oxygen conditions.