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　degrees　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　Bronsted　acid　sites,　facing　with　severe　issues　of　propane　C-C　bond　scission,　strong　propylene　adsorption　and　coke　deposition-caused　deactivation.