Abstract
| - Mesoporous molecular sieves SBA-15, and MAS-7 and MTS-9 synthesized from zeoliteprimary structure units, are characterized by high-resolution transmission electron microscopy (HRTEM). Direct observation of the micropores within these mesoporous materialsvia HRTEM is presented. And nanorange ordered microporosity is found for the first timewithin the pore walls of MAS-7 and MTS-9, which might be the key to the high hydrothermalstability of the mesoporous materials.
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