Photoacoustic Enhancement of Surface IR Modes in Zeolite Channels

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Abstract:

The photoacoustic (PA) signal enhancement of an infrared-active mode of the adsorbed pyridine in the channel/cage of zeolites HZSM-5 and HY was studied comparatively with the use of photoacoustic, transmittance, and diffuse reflectance FT-IR spectroscopies. The data indicate that the PA enhancements of an infrared band of the adsorbed pyridine in the channel/cage of HY and HZSM-5 are 2.1 and 3.3, respectively. The importance of interstitial gas expansion in the photoacoustic signal enhancement of the surface infrared mode is discussed.

Keywords: Infrared; Photoacoustics; Zeolites

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702914336499

Affiliations: 1: Department of Chemistry, University of Utah, Salt Lake City, Utah 84112 2: Center for Micro Analysis and Reaction Chemistry, University of Utah, Salt Lake City, Utah 84112

Publication date: June 1, 1991

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