Infrared Spectroscopic Characterization of CIT-6 and a Family of *BEA Zeolites. (24th October 2013)

• Record Type: Journal Article
• Authors: Tomlinson, Sean R.; McGown, Tyler; Schlup, John R.; Anthony, Jennifer L.
• Other Names: Wada Akihide Academic Editor.
• Is Part Of: International journal of spectroscopy. Volume 2013(2013)
• Publication Date: 2013-10-24
• Subjects: Spectrum analysis -- Periodicals; Spectrum Analysis; Spectrum analysis; Periodicals; Periodicals; 543.5
• DOI: 10.1155/2013/961404
• Languages: English
• ISSNs: 1687-9449

Abstract

Abstract : Infrared spectroscopy is known to be a useful tool for identifying local structure changes in zeolites. Infrared spectroscopy is often employed to complement X-ray diffraction data. Local structure changes in zeolite CIT-6 and its zeolite beta (*BEA) analogs caused by calcination, altering framework composition, and ion exchange have been identified with mid- and far-infrared spectroscopy. Differences in the local structures of the samples were observed in mid- and far-infrared spectra, including changes in the intratetrahedral asymmetric stretch, the double-ring mode, and the intratetrahedral bending mode regions. The infrared spectra indicate that calcination or acetic acid extraction changed the structure of CIT-6 to that of zeolite beta (*BEA). Zinc ion exchange or the substitution of aluminum into the framework structure of acetic acid extracted samples retained the CIT-6 structure.