The chemical and physical features of zeolite-zeolite (MFI-FAU) composite catalysts are examined and characterized by using powder X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectrometry (EDX), N2 adsorption-desorption measurements (BET, BJH, t-plot measurements) and Fourier transform infrared (FTIR) spectroscopy equipped with attenuated total reflectance
The depth-profile infrared measurements were made using both attenuated total reflectance
and diffuse reflectance accessories.
 Nonstandard abbreviations: FT-IR, Fourier transform infrared; ATR, attenuated total reflectance
; and LDA, linear discriminant analysis.
Spectra can be obtained as either a pressed or cast film, or by attenuated total reflectance
. Other instrumental techniques would require the decomposition of the polymer and identification of its fragments.
A surface infrared semi-destructive technique that is devoid of these limitations is Attenuated Total Reflectance
- Fourier Infrared Spectroscopy (ATR-FTIR).
At the University of Wales' Institute of Biological Sciences, researchers used horizontal attenuated total reflectance
FT-IR spectroscopy to detect the bacterial contamination of meat products in real time ...
* Fourier transform infrared attenuated total reflectance
(FTIR-ATR) -- for liquid, paste and thin film analysis,
He designed and applied the first external infrared attenuated total reflectance
(ATR) attachments for evaluating the surface effects of environmental exposure on polymeric and other materials.
Nicolet Avatar 330 FTIR (Thermo Nicolet Electron Corporation, USA) with attenuated total reflectance
(ATR) accessory was used to record the IR spectra of polymers.
Thermo Fisher Scientific Inc., Waltham, Mass., has launched a new imaging attenuated total reflectance
(ATR) accessory, offering enhanced spatial resolution and high-speed data-acquisition capabilities for FT-IR chemical imaging applications.
Fourier transform infrared attenuated total reflectance
spectra of the wine and wine distillates were analyzed using data analysis techniques: principal component analysis and partial least square analysis.