NDLI: Aluminum distribution in high-silica mordenite

Content Provider	Springer Nature Link
Author	Lu, Baowang Kanai, Takahide Oumi, Yasuri Sa, Tsuneji
Copyright Year	2006
Abstract	The Al distribution in high-silica mordenite (MOR) zeolites with various Si/Al ratios was investigated by FT-IR spectroscopy in the presence of CD$_{3}$CN probe molecules and benzene adsorption. Two adsorption bands assigned to CN stretching vibration were observed at 2280–2295 and ≈2315 cm$^{−1}$, which are due to interaction of CN with acidic hydroxyl groups in the main channels and the side pockets of H-MOR zeolite, respectively. The relative intensity of the peak at 2315 cm$^{−1}$ increased with an increase in the Si/Al ratio, indicating that the proportion of Al atoms in the main channels relatively decreased with the Si/Al ratio. This was confirmed from the linear relationship between the number of benzene molecules adsorbed in a unit cell and the number of Al atoms in the main channels. In addition, this was also suggested from the computer simulation result that Al atoms are preferentially sitting in the T$_{3}$ site.
Starting Page	89
Ending Page	96
Page Count	8
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	14
Issue Number	1
e-ISSN	15734854
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2006-12-02
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mordenite Main channel Side pocket Al distribution Acetonitrile Physical Chemistry Characterization and Evaluation of Materials Catalysis
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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