Preparation method and catalytic application of Silicalite-1 single crystal-coated nanopalladium-loaded core-shell catalyst

摘要: The invention discloses a preparation method and catalytic application of Silicalite-1 single crystal-coated nanopalladium-loaded core-shell catalyst, belongs to the field novel materials. comprises following steps: under hydroxyl action between 3-aminopropyl triethoxysilane surfaces molecular sieve nanocrystals, modifying amino groups onto nanocrystals; then, through coordination complexation actions Pd modified on outer Silicalite-1, uniformly fixedly loading surface nanocrystal form palladium-loaded nanocrystals Pd/Silicalite-1; finally, adding Pd/Silicalite-1 into synthesis solution crystals, synthesizing Pd@Silicalie-1 catalyst via induced growth. By method, is simple high in efficiency, defects that conventional poor monodispersity, required be roasted for multiple times takes long time crystallizing or posttreating sample are overcome. Compared with traditional homogeneous has characteristics excellent shape selectivity, metal loss resistance, temperature aggregation resistance like, so wide prospect.