Three-dimensionally　ordered　mesoporous　Mn2O3　(meso-Mn2O3)　and　its　supported　Au,　Ru,　and　AuRu　alloy　(0.49　wt%　Au/meso-Mn2O3,　0.48　wt%　Ru/meso-Mn2O3,　and　0.97　wt%　AuRu/meso-Mn2O3　(Au/Ru　molar　ratio　=　0.98))　nanocatalysts　were　prepared　using　the　KIT-6-templating　and　polyvinyl　alcohol-protected　reduction　methods,　respectively.　Physicochemical　properties　of　the　samples　were　characterized　by　means　of　numerous　techniques,　and　their　catalytic　activities　were　evaluated　for　the　combustion　of　methane.　It　is　found　that　among　all　of　the　samples,　0.48　wt%　Ru/meso-Mn2O3　and　0.97　wt%　AuRu/meso-Mn2O3　performed　the　best　(the　reaction　temperature　(T-90%)　at　90%　methane　conversion　was　530-540　degrees　C),　but　the　latter　showed　a　better　thermal　stability　than　the　former.　The　partial　deactivation　of　0.97　wt%　AuRu/meso-Mn2O3　due　to　H2O　or　CO2　introduction　was　reversible.　It　is　concluded　that　the　good　catalytic　activity　and　thermal　stability　of　0.97　wt%　AuRu/meso-Mn2O3　wasassociated　with　the　high　dispersion　of　AuRu　alloy　NPs　(2-5　nm)　on　the　surface　of　meso-Mn2O3　and　good　low-temperature　reducibility.