Raman spectra are reported of chromium(VI) oxide species in Cr/Al 2O 3 catalysts, and of aqueous solutions of chromium oxide used for the preparation of these catalysts. The Raman spectra reveal that after impregnation and drying at room temperature under vacuum, the chromium oxide is present ...
The IR and Raman spectra of chromium (III) oxide have been studied.? The impact of adding lysozyme on the stability of chromium (III) oxide (Cr2O3) suspension has been evaluated. Hazard Toxic by ingestion and inhalation. Flammability and Explosibility ...
It has been reported that doping of iron phosphate glasses with boric oxide, B2O3, can enhance their thermal stability and crystallization resistance [12], [13]. Moreover, B2O3 also improves the chemical durability of some phosphate glasses [14]. Therefore, iron borophosphate glasses are potenti...
The FTIR spectra (Fig.3a) show distinct absorption bands between 400 and 4000 cm−1. The peaks at 3400 cm−1and 3120.3 cm−1could be attributed to the stretching frequency of hydroxyl and N − H groups. The absorption bands at 2987 cm−1and 2003 cm−1can be ascribed to ...
Chromium oxide gel material was synthesised and appeared to be amorphous in X-ray diffraction study. The changes in the structure of the synthetic chromium... Y Jing,H Cheng,WN Martens,... - 《Journal of Raman Spectroscopy》 被引量: 32发表: 2011年 Equilibrium between Dissolved Chromium and ...
The multiple advantages of FTIR spectroscopy result in considerable improvement in surface analysis using specular reflection. This method is applied in the present study of partially-oriented chromium oxide surfaces prepared by the plasma-spray technique. The results indicate that IR reflection spectroscopy...
Chromium (Cr) is the second most common metal contaminant in ground water, soil, and sediments due to its wide industrial application, hence posing a serious environmental concern. Among various valence states, Cr(III) and Cr(VI) are the most stable forms. Cr(VI) is the most persistent in...
chromium oxide fluoridesquantum-chemical calculationsRaman spectroscopyxenon chemistryX-ray crystallographyMolten mixtures of XeF6 and CrVIOF4 react by means of F2 elimination to form [XeF5][Xe2F11][CrVOF5]?2?CrVIOF4, [XeF5]2[CrIVF6]?2?CrVIOF4, [Xe2F11]2[CrIVF6], and [XeF5]2[CrV2O2...
Optoelectronic performance of indium tin oxide thin films structured by sub-picosecond direct laser interference patterning Article Open access 16 June 2023 An In-situ and Direct Confirmation of Super-Planckian Thermal Radiation Emitted From a Metallic Photonic-Crystal at Optical Wavelengths Article Op...
It was obvious that the oxide Cr2O3, as a nucleating agent, stabilizes in the crystalline phase. Since the atoms in the lattice were in equilibrium, resulting in a long-range order in the crystalline phase, the Gibbs free energy reached the minimum. Therefore, the element Cr stabilized the...