A Multiple Reflection Attachment for Infrared High Sensitivity Reflection Spectroscopy

Attenuated partial internal reflection infrared spectroscopy.

A new method for the spectroscopic study of absorbing films is proposed. In contrast to the well-established methods that take advantage of the attenuation of total internal reflection (ATR) to obtain spectra, we intentionally arrange the optics to permit partial internal reflection from the sampling prism face. Attenuated partial internal reflection (APR) spectroscopy is introduced through the...

Integrating Spheres for Mid- and Near-infrared Reflection Spectroscopy

Monitoring Mineral Surface Phenomena by Infrared Reflection Spectroscopy

Determination of the mineral surface composition and structure at molecular and atomic levels and understanding adsorption mechanisms and kinetics are crucial to perform efficient separation processes for mineral beneficiation. This understanding is a fundamental requirement to make possible the prediction and control of the macroscopic surface properties that govern the efficiency of separatio...

Silica-Supported Palladium Particles with Infrared Reflection-Absorption Spectroscopy

The coadsorption of nitric oxide and carbon monoxide on Pd( loo), Pd( 11 l ) , and a model silica-supported palladium catalyst has been investigated with infrared reflection-absorption spectroscopy (IRAS) in the temperature range 100-500 K. The palladium surfaces were in equilibrium with a 1 X l P Torr equimolar mixture of CO and NO during the FT-IRAS studies. The structure and coverage of the ...

Infrared reflection absorption spectroscopy study of smectite clay monolayers

Infrared reflection absorption spectroscopy (IRRAS), also called infrared external reflection spectroscopy, is used for studying ultrathin hybrid clay films prepared by the Langmuir–Blodgett (LB) method. Infrared spectra of the hybrid films have been obtained at the air–water and air–solid (gold) interface. The presence of a smectite monolayer is observed when cationic surfactants are spread ov...