| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 72826 | Microporous and Mesoporous Materials | 2015 | 6 Pages |
•Silicate-ring structures in diatomite were studied.•Changes of medium-range structure during the crystallization were investigated.•Formation pathway for mordenite was proposed.
Mordenite was synthesized from diatomite in a template-free system. The crystallization behavior and changes of medium-range structure during the crystallization were studied by X-ray diffraction, scanning electron micrograph, vibrational spectroscopy and high-energy X-ray diffraction. It is indicated that major 4-membered rings are formed at a stage later than that of 5-membered ring in the course of crystallization. Diatomite has also been demonstrated to consist of 5-membered rings and various rings lager than 5-membered ring. A formation pathway for mordenite from diatomite could be proposed that 5-membered rings formed initially are undergoing accommodation of 4-membered rings around them to form mordenite.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
