MFI沸石超微粒子之製作

• Main Author: 陳鏡全
• Other Authors: 蔣孝澈
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/58788150392328956005

碩士 === 國立中央大學 === 化學工程研究所 === 89 === The objective of this study is to prepare nano zeolite particles, and then, use surfactant to aggregate these nano particles. We wish to produce the aggregation of nanoparticles, with intercrystalline mesoporousity. We follow approach of Kirshhock et al. to prepare precursor of MFI-nano zeolitic particles. We have used the method of addition of surfactant into the zeolitic solution to aggregate nano particles. Particles show meso -pores between them. We discover that, when we use only one heating step to make particles, we find nano zeolite particles and subcolloidal particles coexisting. So,we have changed our process to double heating process. If we use this process, we find subcolloidal particles almost become nano particles. When we use double heating process to prepare nano zeolitic particles, we need higher steaming temperature and longer steam time. We can see the XRD diffraction peaks and value of microporous adsorption also in-creases. We have used SEM and TEM to observe the nano zeolitic particles. We believe that, this process can be used to make the assembly of MFI nano zeolitic structure,with intercrystalline mesoporousity.