National Technical Reports Library - NTRL

National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.




Details
Actions:

Vaporization of Compounds and Alloys at High Temperatures. Part XXIII. Thermochemical Study of the Germanium Oxides Using a Mass Spectrometer. The Dissociation Energy of the Molecule Geo.


AD607511

Publication Date 1964
Personal Author Drowart, J.; Degreve, F.; Verhaegen, G.; Colin, R.
Page Count 2
Abstract A 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: (I) GeO2(hex) - GeO(g) + I/2O2; (II) n GeO(am) - (GeO)n(g) (n=1, 2, 3); (III) n/2 GeO2(hex) + n/2 Ge(c) - (GeO)n(g) (n = 1, 2, 3). The enthalpies of vaporization at 298K are: (I) = 121.2=1.6 kcal/mole; (II, n = 1) = 53.4=1.0 kcal/mole; (III, n = 1) = 58.2=1.0 kcal/mole. The polymerization energies at 298K are: (GeO-GeO) = 44.7=3.0 kcal/mole; (GeO-GeO-GeO)= 88.5=5.0 kcal/mole. Total pressures given in the literatuure were reinterpreted taking the presence of the polymers into account. The heat of formation of the metastable compound GeO(am) obtained is -59.6 = 0.7 kcal/mole. The dissociation energy of the gaseous molecule GeO is 157.4=1.5 kcal/mole. (Author)
Keywords
  • THERMOCHEMISTRY
  • GERMANIUM COMPOUNDS
  • OXIDES
  • MONOXIDES
  • DIOXIDES
  • MASS SPECTROSCOPY
  • DISSOCIATION
  • VAPORIZATION
  • VAPOR PRESSURE
  • ENTHALPY
  • DISPROPORTIONATION
  • STABILITY
  • POLYMERIZATION
  • HEAT OF FORMATION
  • HEAT OF SUBLIMATION
  • BELGIUM
Corporate Authors Brussels Univ (Belgium)
Document Type Technical Report
NTIS Issue Number 196501
Contract Number
  • AF61 052 225
Vaporization of Compounds and Alloys at High Temperatures. Part XXIII. Thermochemical Study of the Germanium Oxides Using a Mass Spectrometer. The Dissociation Energy of the Molecule Geo.
Vaporization of Compounds and Alloys at High Temperatures. Part XXIII. Thermochemical Study of the Germanium Oxides Using a Mass Spectrometer. The Dissociation Energy of the Molecule Geo.
AD607511

  • THERMOCHEMISTRY
  • GERMANIUM COMPOUNDS
  • OXIDES
  • MONOXIDES
  • DIOXIDES
  • MASS SPECTROSCOPY
  • DISSOCIATION
  • VAPORIZATION
  • VAPOR PRESSURE
  • ENTHALPY
  • DISPROPORTIONATION
  • STABILITY
  • POLYMERIZATION
  • HEAT OF FORMATION
  • HEAT OF SUBLIMATION
  • BELGIUM
  • AF61 052 225
Loading