Size Control of Metal Nanoparticles Encapsulated in Zeolite Single Crystals and Application to Size-selective Hydrogenation
Résumé
We report original synthesis methods for the preparation of yolk-shell materials with a single Au or Pt nanoparticle encapsulated in a single-crystal zeolite shell. The preparation of metal NPs@silicalite-1 involves (i) impregnation of bulk nanocrystals with a metal precursor (ii) formation of the hollow structure by a dissolution-recrystallization process and (iii) eventual reduction under hydrogen.