A　single　metal　Ru/TiO2　catalyst　and　a　Ru-Ce/TiO2　catalyst　were　prepared　by　the　equal-volume　impregnation　method　to　investigate　their　effect　on　the　catalytic　oxidation　of　chlorobenzene.　The　catalysts　were　characterized　by　N2-desorption,　SEM　and　H2-TPR,　which　were　used　to　investigate　the　effect　of　Ce　doping　on　the　catalytic　oxidation　of　chlorobenzene.　The　results　show　that　the　introduction　of　Ce　can　maintain　high　catalytic　efficiency　while　reducing　the　content　of　precious　metals,　and　greatly　improve　the　catalytic　activity　at　low　temperatures.　Compared　with　the　0.4%Ru/TiO2,　T10　and　T90　of　the　0.4%Ru-1.0%Ce/TiO2　decreased　by　50　and　60,　respectively.　H2-TPR　results　showed　that　the　introduction　of　Ce　provided　more　surface　oxygen　vacancies　on　the　catalyst,　and　the　formation　of　Ru-O-Ce　enhanced　its　REDOX　capacity.　The　structure　and　morphology　of　the　Ru/TiO2　catalyst　did　not　change　with　the　Ce　doping,　and　the　mesoporous　structure　of　the　catalysts　maintained.　However,　if　the　content　of　Ce　was　too　large,　some　pores　on　the　catalysts　could　be　blocked,　which　would　decrease　the　adsorption　of　pollutants　and　catalytic　reaction,　and　its　catalytic　performance　would　be　reduced.　©　2020,　Chemical　Industry　Press　Co.,　Ltd.　All　right　reserved.