Vaporization Of Compounds And Alloys At High Temperatures Part XXIII. Thermochemical Study Of The Germanium Oxides Using A Mass Spectrometer -T he Dissociation Energy Of The Molecule GeO

Download this report (PDF, 0.99 MB, 34 pages)
Report Number: WADD TR 60-782 Part XXIII
Author(s): Drowart, J., Verhaegen, G., Colin, R., Degreve, F.
Corporate Author(s): Universite Libre de Bruxelles, Brussels, Belgium
Laboratory: Air Force Materials Laboratory
Date of Publication: 1964-09
Pages: 34
Contract: AF 61(052)-225
DoD Project: 7350
DoD Task: 735001
Identifier: AD0607511

Abstract:
The mass spectrometric study of the vaporization of the compounds GeO2 (hex) and GeO(am) and of the mixture GeO2(hex) + Ge(c) made it possible to establish their mode of vaporization: GeO2(hex) - GeO(g) + I/2O2(I) n GeO(am) - (GeO)n(g) (n=1, 2, 3)(II) n/2 GeO2(hex) + n/2 Ge(c) - (GeO)n(g) (n = 1, 2, 3)(III) The enthalpies of vaporization are: ΔH°298(I) = 121.2±1.6 kcal/ mole ΔH°298(II, n = 1) = 53.4±1.0 kcal/mole ΔH°298(III, n = 1) = 58.2±1.0 kcal/mole The polymerization energies are: ΔH°298(GeO-GeO) = 44.7±3.0 kcal/mole ΔH°298(GeO-GeO-GeO)= 88.5±5.0 kcal/mole Total pressures given in the literature were reinterpreted taking the presence of the polymers into account. The heat of formation of the metastable compound GeO(am) obtained is ΔH°f(GeO) = -59.6±0.7 kcal/mole. The dissociation energy of the gaseous molecule GeO D:(GeO) = 157.4±1.5 kcal/mole.

Provenance: IIT

Other options for obtaining this report:

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a pdf download of the report, exists at DTIC

Via National Technical Report Library:
The NTRL Order Number for this report is: AD607511
A record for this report, and possibly a pdf download of the report, exists at NTRL

Indications of Public Availability
No digital image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale




Export