有具体文献题目吗?... 1. Identification of active sites for CO and CH4 oxidation over PdO/Ce1?xPdxO2?? catalysts??Applied Catalysis B: Environmental 119– 120 (2012) 117– 1222. Combustion of Methane over Palladium-Based Catalysts: Support Interactions??J. Phys. Chem. C 2012, 116, 8571?8578