Investigation of the internal pore structures of Beta/MCM-41 and ZSM-5/MCM-41 composites by ~(129)Xe NMR

摘要

The application of ~(129)Xe NMR to investigating the internal pore structures of Beta/MCM-41 and ZSM-5/MCM-41 composites shows that the mesopore wall of the Beta/MCM-41 composite is constructed by a lot of secondary building units characteristic of zeolite Beta, while the ZSM-5/MCM-41 composite contains interconnected mesopore and micropore. This has demonstrated that ~(129)Xe NMR spectroscopy is a powerful tool to study the internal structures of porous materials.