Series　of　Pd/Al2O3　catalysts　were　prepared　by　equal　volume　impregnation　method.　The　effects　of　different　Pd　loadings　on　the　catalytic　activity　of　chlorobenzene　were　investigated.　The　results　showed　that　the　activity　of　0.75%　Pd/Al2O3　catalyst　was　the　highest.　Based　on　the　purpose　of　reducing　the　amount　of　precious　metals　by　introducing　rare　earth　metal　to　improve　the　performance　of　the　catalyst,　Ce　was　introduced　into　the　catalyst　of　0.5%　Pd/Al2O3,　and　the　optimal　ratio　of　Pd/Ce　catalyst　was　obtained.　It　was　found　that　the　activity　was　best　when　the　Ce　amount　was　2.5%　by　weight.　The　characterizations　of　the　catalyst　by　BET,　H2-TPR,　SEM,　etc.　confirmed　that　the　oxidation　capacity　was　enhanced　and　the　catalytic　oxidation　efficiency　was　improved　through　the　addition　of　Ce.　In　addition,　the　catalytic　products　were　analyzed　with　ion　chromatography　and　GC-MS.　The　results　showed　that　a　small　amount　of　benzene　was　formed　at　350.　At　the　same　time,　the　effects　of　calcination　temperature,　chlorobenzene　concentration　and　space　velocity　on　the　catalytic　activity　were　investigated.　The　results　showed　that　the　calcination　temperature　greatly　affected　the　activity　of　the　catalyst.　The　activity　of　the　catalyst　calcined　at　550　was　the　best,　and　the　CB　conversion　was　96%　when　calcination　temperature　was　400.　When　the　concentration　of　chlorobenzene　was　1500-6000mg/m3,　the　activity　of　chlorobenzene　decreased　with　the　concentration.　When　the　space　velocity　was　in　the　range　of　15000-30000h-1,　it　had　little　effect　on　the　catalytic　activity　of　chlorobenzene.　©　2019,　Chemical　Industry　Press.　All　right　reserved.