Ruthenium-based　materials　are　promising　catalysts　for　the　removal　of　chlorine-containing　volatile　organic　compounds　(CVOCs)　due　to　their　good　ability　in　cleaving　the　C-Cl　bonds　and　decreasing　the　Cl　deposition.　However,　the　roles　of　noble　bimetals　alloyed　with　Ru　have　not　been　clarified　clearly.　In　this　work,　the　bimetallic　RuyM　(M　=　Au,　Pd　or　Pt)　alloys　supported　on　three-dimensionally　ordered　macroporous　(3DOM)　CeO2　(xRu(y)M/3DOM　CeO2;　RuyM　loading　(x)　=　0.90-0.93　wt%,　and　Ru/M　molar　ratio　(y)　=　2.77-2.87)　were　fabricated　by　the　polymer　microbead-templating　and　polyvinyl　alcohol-protected　reduction　methods,　and　their　physicochemical　properties　were　well　measured　using　a　number　of　techniques.　Oxidation　of　trichloroethylene　(TCE)　was　used　to　evaluate　catalytic　performance　of　the　as-obtained　samples　with　a　good-quality　3DOM　structure　and　a　surface　area　of　39-44　m(2)　g(-1).　The　Ru,　Pd,　and　RuyM　nanoparticles　(NPs)　with　an　average　size　of　2.9-3.5　nm　were　uniformly　dispersed　on　the　skeleton　surface　of　3DOM　CeO2.　The　0.93Ru(2.87)Pd/3DOM　CeO2　sample　showed　the　highest　catalytic　activity　and　the　lowest　apparent　activation　energy　(34　kJ　mol(-1)),　with　the　temperatures　(T-50%　and　T-90%)　at　TCE　conversions　of　50　and　90%　being　237　and　298　degrees　C　at　a　space　velocity　of　20　000　mL　g(-1)　h(-1),　respectively.　Simultaneously,　0.93Ru(2.87)Pd/3DOM　CeO2　exhibited　the　highest　TCE　oxidation　rate　(30.3　mu　mol　g(Noblemetal)(-1)　s(-1))　and　the　highest　TOFNoblemetal　(3.1　x　10(-3)　s(-1))　at　250　degrees　C.　The　0.93Ru(2.87)Pd/3DOM　CeO2　sample　also　possessed　a　better　hydrothermal　stability　than　the　0.85Ru/3DOM　CeO2　sample　after　hydrothermal　ageing　treatment　at　750　degrees　C.　Effects　of　H2O,　CO2,　and　HCl　on　catalytic　activity　of　0.93Ru(2.87)Pd/3DOM　CeO2　were　also　examined.　The　presence　of　Ru　in　the　samples　was　favorable　for　generation　of　HCl　and　Cl-2　and　reduction　of　the　by-products　in　TCE　oxidation,　and　tetrachloroethylene　was　the　main　by-product.　The　possible　catalytic　mechanism　over　0.93Ru(2.87)Pd/3DOM　CeO2　was　also　proposed.　The　outstanding　catalytic　efficiency　of　0.93Ru(2.87)Pd/3DOM　CeO2　could　be　assigned　to　the　high　adsorbed　oxygen　species,　good　low-temperature　reducibility,　strong　TCE　adsorption　and　activation　ability,　and　formation　of　the　intimate　nanointerface　between　RuPd　NPs　and　3DOM　CeO2.　This　work　provides　a　practical　guideline　for　rationally　designing　the　efficient　bimetallic　catalysts　for　CVOCs　removal　under　the　industrial　conditions.