The　xCo(3)O(4)-MnO2　(x　=　2.6,　8.8,　and　13.3　wt%)　catalysts　were　prepared　using　the　polymethyl　methacrylate　microspheres-templating,　incipient　wetness　impregnation,　and　acid　treatment　methods.　Physicochemical　properties　of　the　samples　were　characterized　by　means　of　various　techniques.　Catalytic　performance　of　the　xCo(3)O(4)-MnO2　samples　was　evaluated　for　the　combustion　of　o-xylene.　It　is　shown　that　the　as-prepared　samples　possessed　a　cubic　crystal　structure　and　a　surface　area　of　51.9-63.9　m(2)/g.　The　8.8Co(3)O(4)-MnO2　sample　possessed　the　highest　adsorbed　oxygen　species　concentration　and　the　best　low-temperature　reducibility,　and　hence　performing　the　best:　the　T-10%,　T-50%,　and　T-90%　(temperatures　required　for　achieving　o-xylene　conversion　of　10,　50,　and　90%,　respectively)　were　231,　251,　and　273　degrees　C　at　a　space　velocity　of　100,000　mL/(g　h).　The　apparent　activation　energies　obtained　over　the　xCo(3)O(4)-MnO2　catalysts　for　o-xylene　combustion　were　72-82　kJ/mol.　The　effects　of　space　velocity,　water　vapor,　and　carbon　dioxide　on　the　catalytic　activity　of　the　8.8Co(3)O(4)-MnO2　sample　were　also　examined,　and　the　partial　deactivation　due　to　water　vapor　and　carbon　dioxide　introduction　was　reversible.　It　is　concluded　that　the　good　catalytic　performance　of　8.8Co(3)O(4)-MnO2　was　associated　with　its　high　adsorbed　oxygen　species　concentration,　good　low-temperature　reducibility,　and　strong　interaction　between　Co3O4　and　MnO2.