A　series　of　PtSn/hierarchical　ZSM-5　catalysts　were　developed　for　propane　dehydrogenation,　in　which　the　PtSn　bimetallic　particles　are　confined　in　the　mesopores　of　hierarchical　ZSM-5　zeolite.　The　synthesis　of　PtSn/hierarchical　ZSM-5　catalysts　was　achieved　via　the　loading　of　Pt　and　Sn　species　onto　the　hierarchical　ZSM-5　catalysts　that　are　obtained　through　a　desilication　of　conventional　ZSM-5.　The　PtSn/hierarchical　ZSM-5　catalysts　were　fully　characterized　by　XRD,　N2　adsorption,　STEM,　XPS,　and　CO-IR　techniques,　which　reveals　that　highly　dispersed　PtSn　bimetallic　nanoparticles　are　enclosed　into　mesopores　of　hierarchical　ZSM-5.　The　catalytic　performance　of　PtSn/hierarchical　ZSM-5　is　greatly　affected　by　the　concentrations　of　alkali　solution　in　the　desilication　process　and　Sn/Pt　ratios　in　PtSn　bimetallic　particles.　The　PtSn1.00/ZSM-5(0.8)　catalyst　shows　the　highest　efficiency　in　propane　dehydrogenation,　which　gives　an　initial　conversion　of　46%　and　selectivity　of　98%　at　570　°C.　The　high　efficiency　in　these　PtSn/hierarchical　ZSM-5　catalysts　for　propane　dehydrogenation　is　mainly　ascribed　to　the　confinement　of　PtSn　particles　in　the　mesopores　of　hierarchical　ZSM-5　zeolite.　©　2021　Chemical　Industry　and　Engineering　Society　of　China