Comparative IR and H-MAS NMR study of adsorption of CDCN on zeolite H-β: Evidence of the presence of two families of bridged Bronsted sites
Physical Chemistry Chemical Physics, ISSN: 1463-9076, Vol: 1, Issue: 10, Page: 2627-2629
1999
- 72Citations
- 35Captures
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Article Description
The IR and H-MAS NMR spectroscopy of zeolite H-β in interaction with CDCN is described. Two families of strong Si(OH)Al Bronsted sites have been clearly distinguished: a first family, characterized by an NMR signal at 4.4 ppm and an IR peak at 3614 cm (isolated bridged hydroxys) and a second family, characterized by a broad band in the 3-7 ppm NMR range and in the 3600-3200 cm IR range, due to bridged hydroxys which are perturbed by H-bond interactions with the zeolitic framework. This last family of hydroxys form weaker adducts with acetonitrile.
Bibliographic Details
Royal Society of Chemistry (RSC)
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