In this paper, the precise construction on the structure of silicalite-1 microcapsules （S1） was specifically described. The interior carbon modifications and the outside mesoporous functionalizations were successful...In this paper, the precise construction on the structure of silicalite-1 microcapsules （S1） was specifically described. The interior carbon modifications and the outside mesoporous functionalizations were successfully conducted and each sample was characterized in detail, It was found that the carbon networks could be formed inside the zeolite microcapsules via the pretreatment of sugar injections. The uniformity of the distinct microcapsule could be regulated by adjusting the sugar concentrations. With the encapsulated Pt species inside the MSSs, the nano-particles could be dispersed well within the carbon network. On the other hand, during the fabrication of the mesoporous materials outside the microcapsules, the template and the acidity of the system could play an important role in determining the morphology of S1. Besides, the PDDA modification on the shell of SI could help the combination of the meso-layer and the shell of S1 at nano-scale. The thickness of the outside mesopore could be modulated through the controlling of the silica content.展开更多
基金supported by National Key Basic Research Program of China(Nos.2013CB934101 and 2009CB623500)Science and Technology Commission of Shanghai Municipality(No.11JC1400400)+1 种基金National Plan for Science and Technology(No.14-PET827-02)Shanghai Postdoctoral Scientific Program(No.13R21422000)
文摘In this paper, the precise construction on the structure of silicalite-1 microcapsules （S1） was specifically described. The interior carbon modifications and the outside mesoporous functionalizations were successfully conducted and each sample was characterized in detail, It was found that the carbon networks could be formed inside the zeolite microcapsules via the pretreatment of sugar injections. The uniformity of the distinct microcapsule could be regulated by adjusting the sugar concentrations. With the encapsulated Pt species inside the MSSs, the nano-particles could be dispersed well within the carbon network. On the other hand, during the fabrication of the mesoporous materials outside the microcapsules, the template and the acidity of the system could play an important role in determining the morphology of S1. Besides, the PDDA modification on the shell of SI could help the combination of the meso-layer and the shell of S1 at nano-scale. The thickness of the outside mesopore could be modulated through the controlling of the silica content.
