Heat of Formation of Be2O(g) by Mass Spectrometry

Autor:	L. P. Theard, Donald L. Hildenbrand
Rok vydání:	1964
Předmět:	Suboxide Beryllium oxide Analytical chemistry General Physics and Astronomy chemistry.chemical_element Tungsten Mass spectrometry Standard enthalpy of formation Ion chemistry.chemical_compound Fragmentation (mass spectrometry) chemistry Ionization Physical and Theoretical Chemistry
Zdroj:	The Journal of Chemical Physics. 41:3416-3420
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1725742
Popis:	Mass spectrometric Knudsen effusion experiments have provided evidence for the existence of the suboxide species Be2O(g) in the equilibrium vapor above crystalline beryllium oxide at temperatures around 2300°K. Be2O+ ions appear to be formed both by simple ionization of Be2O(g) and by fragmentation of a larger molecule. The relative importance of the two processes has been shown to be temperature dependent. An average value of —8±10 kcal/mole was obtained for ΔHf°298[Be2O(g)] from third‐law calculations for three equilibria.Mass spectral data are given for the equilibrium vapor above beryllium oxide at 2380°K in the presence of tungsten.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d0f209a67afd73e2dd4cd6e8f16fe214 https://doi.org/10.1063/1.1725742 Zobrazit plný text záznamu