With　BEA　(Si/Al　=　20)　zeolite　and　dealuminated　Si-BEA　as　supports,　the　non-noble　metal　Co　catalysts　are　prepared　by　vacuum　impregnation　method　to　study　the　correlation　between　the　catalyst　structure　and　catalytic　performance　in　propane　dehydrogenation　(PDH)　reaction.　The　optimal　0.5　wt%　Co@Si-BEA　catalyst　exhibits　over　93　%　selectivity　to　propylene,　high　single-pass　yield　and　great　regeneration　stability　in　the　recycling　PDH　reactions　at　590　°C.　The　isolated　Co2+　cations　are　anchored　in　the　micropores　of　Si-BEA　zeolites　through　interacting　with　the　silanol　groups　generated　by　dealumination　treatment,　and　serve　as　the　catalytically　active　sites　to　selectively　activate　the　C–H　bonds　of　propane　rather　than　dissociate　the　C–C　bonds.　Furthermore,　Co@Si-BEA　catalyst　adsorbs　propylene　in　a　favorable　configuration,　leading　to　desired　adsorption　features　with　respect　to　less　amount　and　weaker　strength　in　comparison　with　that　on　non-dealuminated　Co@BEA　catalyst.　Therefore,　the　facile　propylene　desorption　can　be　achieved　on　Co@Si-BEA　catalyst,　which　is　responsible　for　its　high　propylene　selectivity,　activity,　and　long-term　stability　in　PDH　reaction.　By　contrast,　Co@BEA　catalyst　with　higher　density　of　surface　Brønsted　acid　sites,　facing　with　severe　issues　of　propane　C–C　bond　scission,　strong　propylene　adsorption　and　coke　deposition-caused　deactivation.　©　2022　Elsevier　B.V.