Restructuring　of　a　heterogeneous　catalyst　under　reaction　conditions　is　a　common　phenomenon.　Severe　restructuring　of　a　catalyst　can　result　in　deactivation　in　many　catalytic　systems-for　example,　the　catalytic　dehydrogenation　of　propane　to　propylene.　Herein,　we　report　the　utilization　of　catalyst　restructuring　to　improve　activity　and　stability　for　the　propane　dehydrogenation　reaction.　A　bime-tallic　platinum　and　zinc　(Pt1Znm)　catalyst　protected　by　an　in　situ　re-structured　silicalite-1　zeolite　is　prepared.　The　catalyst　yields　outstanding　activity　(initial　conversion　of　-69.2%,　initial　selectivity　of　-91.1%)　with　high　stability　at　580　degrees　C,　which　is　better　than　several　commercial　catalysts.　Characterization　shows　the　singly　dispersed　bimetallic　sites　of　Pt1Znm　serve　as　the　catalytic　sites　during　the　reaction.　Moreover,　the　less-stable　silicalite-1　zeolite　undergoes　re-structuring　during　the　dehydrogenation　reaction,　forming　a　crucial　protective　layer　on　the　Pt1Znm　bimetallic　nanocatalysts.