Three　different　techniques,　a　hydrothermal　process　with　impregnation,　solution-combustion　and　common　precipitation　with　impregnation,　were　employed　for　the　synthesis　of　1.5wt%　Pd/CeO2,　and　the　resulting　catalysts　were　denoted　as　Pd/HY,　Pd/COM　and　Pd/PI,　respectively.　These　catalysts　have　been　investigated　in　terms　of　catalytic　co-oxidation　of　CO　and　methanol　and　characterized　by　means　of　XRD,　BET,　SEM,　STEM-EDS,　CO　chemisorption,　XPS,　Raman,　O2-TPD,　H2-TPR　and　CO-TPD　measurements.　Activity　results　show　that　a　rapid　catalytic　oxidation　of　CO　following　the　Mars-van　Krevelen-type　mechanism　favors　the　complete　methanol　oxidation　at　low　temperature.　Consequently,　the　Pd/HY　catalyst　with　the　highest　degree　of　defect　sites　connected　with　the　mobility　of　activated　oxygen　shows　the　best　catalytic　performance.　And　the　generation　of　more　defect　sites　demonstrated　by　Raman　is　assumed　for　the　low　crystallinity　and　small　crystallite　size　of　CeO2　synthesized　through　a　hydrothermal　process　while　the　high　mobility　of　activated　oxygen　is　evidenced　by　O2-TPD　and　H2-TPR.　Additionally,　the　outstanding　catalytic　performance　of　Pd/HY　is　also　associated　with　its　high　Pd　dispersion　and　stable　PdOx　species　as　well　as　good　redox　behavior.　©　2013　Elsevier　B.V.