Mass spectrometric studies of the thermochemistry of gaseous TiO and TiO2

✍ Scribed by D.L. Hildenbrand

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 404 KB
• Volume: 44
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80510-6

✦ Synopsis

Several gaseous reaction equilibria Involving TiO and T102 were studied by mass spcctrometry and the results were used to derive the dissociation energies of the two titanium oxides. Isomolecular exchange reactions of.TiO with AI0 and BaO gave highly concordant results Icading to @(TiO) = 662.7 f 6.3 kJ/mol(6.87 +-0.07 eV), which combines with other recent work to establish firmly @(TiO). For TiOl, the heat of atomization, Dt(TiOz), was derived as 127i.9 * 11.7 kJlmot (13.18 + 0.12 eV). From electron impact threshold measurements, the ionization potentials of TiO and TiOl were found to be 6.70 and 9.54 eV, respcctivcly, both f 0.10 cV. The thermochemical data for TiO and TiO+aie in accord with the reIativeIy smalI cross section observed for the process Ti + 0 + TiO*+ e at thermal energies.