The　adsorption　process　is　important　for　the　gas-solid　catalytic　reactions.　Therefore,　it＇s　of　great　significance　to　investigate　material　adsorption　performance　for　the　gas-solid　catalysis.　In　this　paper,　toluene　adsorption　was　investigated　through　the　adsorption　penetration　curves　of　RM,　MRM　and　0.3Pd-MRM　at　different　temperatures.　The　results　showed　that　0.3　wt%　Pd-MRM　had　the　best　toluene　adsorption　performance,　which　was　attributed　to　the　optimization　of　the　pore　structure　of　the　red　mud　by　acid　modification,　and　the　loading　of　metal　to　increase　the　toluene　adsorption　sites.　The　pseudo-first　order　model　(PFO)　could　be　fitted　the　adsorption　rate　curves　well,　indicating　that　the　toluene　adsorption　process　on　red　mud　particles　was　primarily　driven　by　the　physical　adsorption.　The　Boyd＇s　film-diffusion　model　and　mass　transfer　model　collectively　indicated　that　internal　diffusion　played　a　pivotal　role　in　the　toluene　adsorption　process　of　MRM　and　0.3Pd-MRM.　In　addition,　0.3Pd-MRM　exhibited　stronger　resistance　to　internal　diffusion　that　was　attributed　to　the　presence　of　Pd,　which　led　to　the　stronger　toluene　force　on　red　mud　surface.