Spectroscopy, far infrared

Infrared spectra, of fats and oils, 10 823 Infrared spectral region, 19 564 Infrared spectroscopy, 14 224-243 23 136-143. See also Chromatography-infrared spectroscopy Far- infrared spectroscopy ir-selective surfaces Ir (infrared) spectroscopy Near- infrared spectroscopy Thermal analysis-infrared spectroscopy applications of, 14 239-240 23 140-141 in composition measurements, 20 682 in fiber optic fabrication, 11 138 industrial applications of, 14 240 instrumentation in, 14 225-228 23 137-138... [Pg.473]

Terahertz spectroscopy Far-infrared spectroscopy 3D imaging X Polymorphism Coating integrity and thickness API distribution possible... [Pg.363]

The nature of acid sites was at the center of several studies. Barthomeuf discussed spectroscopic methods applied to study hydroxyl groups, Bronsted and Lewis acidities and basicities, and the effects of extraframework oxides on acidity or basicity. These are IR, which is the most important here, NMR, XPS, UV- and visible, Raman and Mdssbauer spectroscopies. Far infrared technique may reveal cation locations. The shift of the band associated with the NH of pyrrole depends on the charge of 0, which in turn determines the basicity. Some progress has been made in the last few years in the identification of different OH groups. An interesting observation was that sU adsorbed benzene molecules are disturbed by the 0-s, even at high benzene coverages. [Pg.605]

Big Chemical Encyclopedia