Vapor pressure measurements of PbBr2 by the Knudsen effusion method and identification of its vapor species

Atsushi Iizuka, Etsuro Shibata, Makiko Sato, Takashi Nakamura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The vapor pressure of PbBr2 solid was measured by the Knudsen effusion method assuming that the vapor species consisted only of monomers. The vapor pressure of PbBr2 fitted the following linear equation over the temperature range 532.3-633.9 K:ln(p(Pa))=-(16,653±431)T (K)+(26.47±0.74). The standard sublimation enthalpy of PbBr2 was estimated to be 138.5 ± 3.6 kJ mol-1, and the standard sublimation entropy was estimated to be 220.1 ± 6.2 J mol-1 K-1. Identification of the predominant vapor species of PbBr2 was conducted using mass spectrometry. From the analysis, the main vapor species of PbBr2 solid is the PbBr2 monomer.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalThermochimica Acta
Volume622
DOIs
Publication statusPublished - 2015 Dec 20

Keywords

  • Knudsen effusion method
  • Lead bromide
  • Vapor pressure
  • Vapor species

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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