In　order　to　improve　the　inefficiency　of　volatile　organic　compound　(VOCs)　combustion　processing,　Cr2O3　nano-particles　were　prepared　by　using　a　hydrothermal　synthesis　method　and　subsequently　used　as　carrier　to　load　manganese　through　impregnation　method,　leading　to　the　development　of　a　series　of　Mn/Cr2O3　catalysts.　The　physical　and　chemical　properties　of　the　catalysts　were　characterized,　and　the　catalytic　oxidation　performance　for　toluene　was　evaluated.　The　corresponding　results　indicated　that　the　introduction　of　MnOx　onto　Cr2O3　not　only　instigated　the　creation　of　an　organized　mesoporous　structure　within　the　chromium-based　support,　but　also　markedly　increased　the　specific　surface　area.　This　enhancement　facilitated　the　dispersion　of　active　MnOx,　maintained　the　stable　structure　of　Mn/Cr2O3　catalysts,　and　resolved　the　issue　of　aggregation-induced　deactivation　of　the　active　components.　When　Mn　content　was　20%,　Mn/Cr2O3　catalyst　exhibited　the　highest　activity,　and　the　temperatures　for　the　toluene　conversion　reaching　50%,　90%　and　100%,　were　210,　229　and　240　°C,　respectively.　Moreover,　the　toluene　conversion　could　be　maintained　at　100%　at　240　°C　in　50　h　stability　test.　The　results　demonstrated　that　by　controlling　the　amount　of　Mn　species　incorporated,　it　was　possible　to　effectively　modulate　the　pore　structure　of　the　Mn/Cr2O3　catalysts,　the　interactions　between　the　metal　and　support　and　the　ability　to　eliminate　coke　deposition.　©　2024　Research　Institute　of　Petroleum　Processing,　SINOPEC.　All　rights　reserved.