Infrared spectroscopy DRIFTS

Vreugdenhil A J and Butler I S 1998 Investigation of MMT adsorption on soils by diffuse reflectance infrared spectroscopy DRIFTS and headspace analysis gas-phase infrared spectroscopy HAGIS Appl. Organomet. Chem. [Pg.1795]

Several properties of the filler are important to the compounder (279). Properties that are frequentiy reported by fumed sihca manufacturers include the acidity of the filler, nitrogen adsorption, oil absorption, and particle size distribution (280,281). The adsorption techniques provide a measure of the surface area of the filler, whereas oil absorption is an indication of the stmcture of the filler (282). Measurement of the sdanol concentration is critical, and some techniques that are commonly used in the industry to estimate this parameter are the methyl red absorption and methanol wettabihty (273,274,277) tests. Other techniques include various spectroscopies, such as diffuse reflectance infrared spectroscopy (drift), inverse gas chromatography (igc), photoacoustic ir, nmr, Raman, and surface forces apparatus (277,283—290). [Pg.49]

Diffuse refleetance infrared spectroscopy (DRIFTS) provides useful information about the degree of ineorporation and nature of the immobilized eomplex in supported reagents. We have studied the supports as well as the supported reagents containing the immobilized eomplexes by this form of infrared spectroscopy where samples in the solid state are examined to determine the nature species under examination. We discuss here the infrared speetral evidenee of two supported materials - Co(III)-CMS3, prepared by the in-situ method and Co(III)-CMS4 whieh has been prepared by the ligand substitution route. [Pg.129]

The details in the CO response continue to be the subject of many discussions and a full explanation will need further studies. These can include spectroscopy studies such as diffuse reflectance transform infrared spectroscopy (DRIFT), which can be performed under realistic conditions [43,44], and theoretical modeling [45]. However it seems likely that not only hydrogen gives rise to charged or polarized complexes on the insulator surface. Equation (2.3) may now be written as... [Pg.34]

F. Diffuse-Reflection (Fourier-Transform) Infrared Spectroscopy (DRIFTS) (18)... [Pg.6]

Infrared spectroscopy Transmission infrared spectroscopy Diffuse reflectance infrared spectroscopy (DRIFTS) Attenuated total reflection (ATR)... [Pg.217]

Newton MA, Dent AJ, Fiddy SG, Jyoti B, Evans J. Combining diffuse reflectance infrared spectroscopy (DRIFTS), dispersive EXAFS, and mass spectrometry with high time resolution potential, limitations, and application to the study of NO interaction with supported Rh catalysts. Catal Today. 2007 126 64. [Pg.327]

Ostmeyer JG, Elder TJ, Winandy JE (1989) Spectroscopic analysis of southern pine treated with chromated copper arsenate II Diffuse-reflectance Founer-transform infrared spectroscopy (DRIFT) J Wood Chem Technol 9 105-122 Owen NL, Thomas DW (1989) Infrared studies of hard and soft woods Appl Spectrosc 43 451-455... [Pg.108]

Generally speaking, the methods used to characterize carbonaceous material surfaces are referred to as wet and dry techniques. The former include potentiometric titrations and zeta potential or electrochemical methods the latter include temperature-programmed desorption (TPD) and spectroscopic methods such as x-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared spectroscopy (DRIFT). [Pg.58]

Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFT)... [Pg.114]

Both chemical and physical processes take place during calcination and activation. Ligand decomposition from the metal complex can be monitored with in situ vibrational spectroscopy, for example, using diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). In the case of a transition metal ion, the metal oxidation state can be tracked as a function of time and temperature using in situ UV-vis spectroscopy. Finally, the formation of metal clusters and nanoparticles can be monitored using XRD, similar to that described for the synthesis of silicalite-1. [Pg.377]

Showed that carbon in the surface or skin [12] consists of carbide (51%) carbon (41%) and carbonate (8%). Infrared depth profiling by diffuse reflectance infrared spectroscopy (DRIFT) provided further important insights [52], It showed that carbon alters the oxygen environment of the aluminum atoms near the fiber surface from octahedral to tetrahedral coordination and promotes the generation of carbonaceous species such as ethers and esters in addition to carbonates and carbides [52] which have also been found with XPS [12],... [Pg.111]

The second group of techniques are the spectroscopic techniques that provide elemental and chemical analysis. These are diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS), XPS, and SIMS. XPS and SIMS probe the first few nanometres of the surface whereas DRIFTS probes an order of magnitude deeper. These techniques are discussed in Section 3.5. [Pg.108]

Suzuki, E. M., and G. WR. "Forensic Science Applications of Diffuse Reflectance Infrared Spectroscopy (DRIFTS) L" Journal cf Forensic Sciences 31 (19%), 931-95Z... [Pg.526]

Diffusive reflectance infrared spectroscopy (DRIFT, presented as the Kubelka-Munk transformation) was used to identify the nature of the carbon and hydrogen species of the polymer-deriv amorphous products. The spectra of the pyrolyz PNMS and PCMS are... [Pg.169]

The characterization of surface oxygen complexes by diffuse reflectance infrared spectroscopy (DRIFT) and temperature programmed desorption (TPD). [Pg.12]

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