IR Spectra of Minerals and Related Compounds, and Reference Samples’ Data

CO2 methanation reaction pathways over unpromoted and NaNO3-promoted Ru/Al2O3 catalysts

“…It was previously reported that molten alkali metal ions can dissolve CO 2 under similar conditions. 32–35 For all four samples, CO 2 reaction orders were larger at higher H 2 partial pressures. This can be attributed to competitive adsorption between H 2 and CO 2 , with the increase in the H 2 partial pressure leading to a higher surface coverage of H* species, which causes a decrease in the surface coverage of CO 2 -related reaction intermediates, leading to increased CO 2 reaction orders.…”

Characterization of surface physico-chemistry and morphology of plasma-sized carbon fiber

“…The broad band centred around 1600 cm -1 corresponds to carbonyl (C=O) and carbon double bond (C=C), originated from surface oxidation at the ambient atmosphere. The other broad and less intense bands centred around 2350 cm -1 and 3400 cm -1 correspond to adsorbed CO2 and humidity [44]. Therefore, the improvement of the signal, as well as the easier assignment of the main bands in the case of the desized CF with no characteristic peaks of any pollutant or sizing agent indicates that the desizing process allows to efficiently remove the polymeric thin film deposited on commercial available CF.…”

Changes in surface properties of PI/WO2 сoatings after vacuum ultraviolet irradiation

“…6 shows the IR spectra of the starting WO 2 filler and the VUV treated WO 2 filler. The IR spectrum of the initial WO 2 filler contains an intense band in the region ν = 500-720 cm − 1 , which is attributed to the structural vibrations of W -O bonds [47,48]. The weak band at 788 cm − 1 is attributed to the W-O -W bridge oscillations of WO 2 [47,48].…”

“…The IR spectrum of the initial WO 2 filler contains an intense band in the region ν = 500-720 cm − 1 , which is attributed to the structural vibrations of W -O bonds [47,48]. The weak band at 788 cm − 1 is attributed to the W-O -W bridge oscillations of WO 2 [47,48]. The absorption bands at 871 and 947 cm − 1 are assigned to modes of bridging O -W-O vibrations, and those at 1465 cm − 1 are assigned to the vibrational modes of Lewis centers.…”