Oligomerization of PbO-Vapor

Knacke, O.; Richthofen, Alexander von

doi:10.1524/zpch.1994.187.part_2.257

Cited by 11 publications

(11 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• Use of electrochemical effusion cells to modify the composition of the gas phase at constant temperature [198][199][200][201] and to establish relations between the galvanic current, the rate of effusion, and the MS ion intensity of different constituents of the vapor [198][199][200].…”

Section: High-temperature Mass Spectrometric Determinations Of Ionizamentioning

confidence: 99%

High-temperature mass spectrometry: Instrumental techniques, ionization cross-sections, pressure measurements, and thermodynamic data (IUPAC Technical Report)

Drowart

Chatillon

Hastie

et al. 2005

Pure and Applied Chemistry

234

184

View full text Add to dashboard Cite

An assessment of high-temperature mass spectrometry and of sources of inaccuracy is made. Experimental, calculated, and estimated cross-sections for ionization of atoms and inorganic molecules typically present in high-temperature vapors are summarized. Experimental cross-sections determined for some 56 atoms are generally close to theoretically calculated values, especially when excitation–autoionization is taken into account. Absolute or relative cross-sections for formation of parent ions were measured for ca. 100 molecules. These include homonuclear diatomic and polyatomic molecules, oxides, chalcogenides, halides, and hydroxides. Additivity of atomic cross-sections supplemented by empirical corrections provides fair estimates of molecular cross-sections. Causes of uncertainty are differences in interatomic distances and in shapes of potential energy curves (surfaces) of neutral molecules and of molecular ions and tendency toward dissociative ionization in certain types of molecules. Various mass spectrometric procedures are described that render the accuracy of measured thermodynamic properties of materials largely independent of ionization cross-sections. This accuracy is comparable with that of other techniques applicable under the conditions of interest, but often only the mass spectrometric procedure is appropriate at high temperatures.

show abstract

Section: High-temperature Mass Spectrometric Determinations Of Ionizamentioning

confidence: 99%

High-temperature mass spectrometry: Instrumental techniques, ionization cross-sections, pressure measurements, and thermodynamic data (IUPAC Technical Report)

Drowart

Chatillon

Hastie

et al. 2005

Pure and Applied Chemistry

234

184

View full text Add to dashboard Cite

show abstract

“…[3][4][5] The enthalpies of oligomerisation for the lead oxides from the literature and our calculated values are compared in Table 11.…”

Section: Density Functional Theory Computationsmentioning

confidence: 99%

“…Several studies of the vaporisation of the pure oxides of PbO, [3][4][5] As 2 O 3 6,7 and Sb 2 O 3 8,9 using mass spectrometric methods have been reported by several authors. In the gas phase over solid lead monoxide at a temperature of approximately 1000 K, PbO, Pb 2 O 2 and Pb 4 O 4 were found to be the main compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Very low concentrations of Pb 3 O 3 , Pb 5 O 5 and Pb 6 O 6 were also detected. [3][4][5] Mass spectrometric studies of the vaporisation of As 2 O 3 have shown that the gas phase of the As-O system is highly complex. 6 Besides gaseous As 4 O 6 and AsO species, which were previously known to exist in the gas phase, other stable species including As 4 O 5 , As 4 O 4 , As 4 O 3 , As 3 O 4 , As 2 O 3 and AsO 2 were detected in the gas phase.…”

Section: Introductionmentioning

confidence: 99%

“…14 The equilibrium in the gas phase was investigated in the Knudsen cell over Sb 2 O 3 and PbO oxides too. [3][4][5]8,9,15 Using the partial pressures, we determined the equilibrium constants of the formation of the arsenic-lead and antimonylead ternary oxides, which will be given later in this paper.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A mass spectrometric and quantum chemical study of the vaporisation of lead monoxide in a flow of gaseous arsenic and antimony trioxides

Milke

Binnewies

2014

Dalton Trans.

View full text Add to dashboard Cite

Mass spectrometric studies of the vapours over solid lead oxide in a flow of gaseous arsenic and antimony trioxides were conducted. The following ions of the ternary oxides were detected: species also existed in the gas phase. Thermodynamic data for the ternary oxides were obtained experimentally by means of a mass spectrometric Knudsen-cell method and were confirmed by quantum chemical calculations.

show abstract

Mass Spectrometric Investigation of the Evaporation Properties of Lead Oxide

Popović

Lesar

Guček

et al. 1997

Rapid Commun. Mass Spectrom.

View full text Add to dashboard Cite

Partial pressures of molecular species over solid PbO were measured in the temperature interval between 890 K and 1100 K using Knudsen-cell mass spectrometry. The assignment of ions is discussed in detail. Structural and vibrational parameters of the gas phase for (Pb n O n ) (n = 1,2,3,4) were calculated by the ab initio molecular orbital method at different approximation levels. Third law enthalpies of dissociation of Pb 2 O 2 and Pb 4 O 4 to monomeric PbO were obtained as (250.6 ± 6) kJ/mol and (835.0 ± 15) kJ/mol, respectively. The possibility of direct measurement of the dissociation pressure of PbO by a mass spectrometer is demonstrated.

show abstract

Oligomerization of PbO-Vapor

Cited by 11 publications

References 11 publications

High-temperature mass spectrometry: Instrumental techniques, ionization cross-sections, pressure measurements, and thermodynamic data (IUPAC Technical Report)

High-temperature mass spectrometry: Instrumental techniques, ionization cross-sections, pressure measurements, and thermodynamic data (IUPAC Technical Report)

A mass spectrometric and quantum chemical study of the vaporisation of lead monoxide in a flow of gaseous arsenic and antimony trioxides

Mass Spectrometric Investigation of the Evaporation Properties of Lead Oxide

Contact Info

Product

Resources

About