Three-dimensionally　ordered　macroporous　(3DOM)　CeO2,　3DOM　Cr2O3,　3DOM　xCr(2)O(3)-CeO2(x　(the　weight　percentage　of　Cr2O3)　=　3.5,　5.5,　and　8.0　wt%),　and　5.5　wt%　Cr2O3/3DOM　CeO2　samples　were　prepared　using　the　polymethyl　methacrylate　(PMMA)-templating　and　incipient　wetness　impregnation　methods,　respectively.　A　number　of　techniques　were　used　to　characterize　physicochemical　properties　of　the　materials,　and　their　catalytic　activities　were　evaluated　for　the　oxidation　of　trichloroethylene　(TCE).　These　samples　possessed　a　good-quality　3DOM　structure　and　a　surface　area　of　35　-　47　m(2)/g.　The　3DOM　5.5Cr(2)O(3)-CeO(2　)sample　performed　the　best　(the　temperature　at　TCE　conversion　=　90%　=　255　degrees　C　at　a　space　velocity　of　20,000　mL/(g　h)).　Effects　of　water　vapor　and　carbon　dioxide　on　activity　of　the　5.5Cr(2)O(3)-CeO2　sample　were　also　examined.　It　is　observed　that　partial　deactivation　induced　by　H2O　introduction　of　the　5.5Cr(2)O(3)-CeO2　sample　was　reversible,　while　that　induced　by　CO2　addition　was　irreversible.　Based　on　the　activity　data　and　characterization　results,　it　is　concluded　that　the　good　catalytic　activity　and　thermal　stability　of　3DOM　5.5Cr(2)O(-)CeO(2)　was　associated　with　its　high　adsorbed　oxygen　species　concentration,　good　low-temperature　reducibility,　and　strong　interaction　between　Cr2O3　and　CeO2.　We　believe　that　the　3DOM　5.5Cr(2)O(3)-CeO2　catalyst　is　promising　in　the　application　for　oxidative　removal　of　chlorinated　volatile　organic　compounds.