Mesoporous　cubic　PdxPt　(x=　0.43-8.52)　alloys　with　surface　areas　of　26-32　m(2)/g　were　synthesized　using　the　KIT-6-templating　method.　Physicochemical　properties　of　the　materials　were　characterized　by　means　of　various　techniques,　and　their　catalytic　activities　were　evaluated　for　methane　combustion.　It　is　found　that　the　Pd　and　Pt　were　uniformly　distributed　in　the　PdxPt　alloys.　The　addition　of　Pt　to　Pd　exerted　a　significant　effect　on　the　redox　property　of　Pd.　The　PdxPt　alloys　possessed　a　higher　methane　activation　ability　than　the　monometallic　Pd.　The　oxidized　Pd-Pt　(i.e.,　PdO-PtO2)　were　more　active　than　the　metallic　Pd-0-Pt-0.　The　Pd-2.41　Pt　sample　performed　the　best　for　methane　combustion　(T-10%,　T-50%,　and　T-90%　were　272,　303,　and　322　degrees　C　at　SV=100,000　mL/(gh);　TOFpd,　TOFpt,　TOFpd+pt,　and　specific　reaction　rate　at　280　degrees　C　were　0.85　x　10(-3)　s(-1),　1.98　x　10(-3)　s(-1),　0.59　x　10(-3)　s(-1),　and　4.46　mu　mol(g(cat)　s),　respectively).　The　deactivation　of　the　Pd-2,Pd-41　Pt　sample　induced　by　2.5-5.0　vol%　CO2　or　H2O　addition　was　reversible,　but　its　deactivation　due　to　100　ppm　SO2　introduction　was　irreversible.　It　is　concluded　that　the　excellent　catalytic　performance　of　the　Pd-2,Pd-41　Pt　sample　was　associated　with　its　good　mesoporous　structure,　Pd-Pt　alloy　and　PdO-PtO2　coexistence,　and　good　methane　and　oxygen　activation　ability.　(C)　2017　Elsevier　B.V.　All　rights　reserved.