Exploring cation siting in zeolite ZSM-5 by infrared spectroscopy, EXAFS and computer simulations

✍ Scribed by H. Esemann; H. Förster; E. Geidel; K. Krause

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 570 KB
• Volume: 6
• Category: Article
• ISSN: 0927-6513
• DOI: 10.1016/0927-6513(96)00041-7

✦ Synopsis

A new approach for retrieving information on cation siting in silicon-rich zeolites like ZSM-5 is presented. It is based on combined investigations using the cation sensitive methods, far-IR spectroscopy and EXAFS together with computer simulations. This combination proved to be successful for alkali and even for alkaline earth ions. It was possible to obtain cation locations for Cs ÷ as well as for Ba 2÷ ions in ZSM-5. In this context the series of farinfrared spectra of alkali exchanged ZSM-5 is shown for the first time,