Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 106, Issue 1-3, Pages 122-128Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2007.02.035
Keywords
zeolites; FTIR spectroscopy; silanols; ZSM-5 zeolites; OH groups
Ask authors/readers for more resources
The infrared spectral region corresponding to the vibrations of the silanols of ZSM-5 zeolites has been carefully examined. Four different kinds of silanols were identified: two inner species, located in the channels, and two species corresponding to external sites, at the boundaries of the crystallites. The behavior of these species with thermal treatment and pyridine adsorption was investigated. On the zeolites as received, the outer species are exclusively geminal silanols, a new identified OH group, which convert to free silanols with thermal treatment. One of the species shows also Bronsted acid properties. (c) 2007 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available