Study of the reactions between tetrabromobisphenol A and PbO and Fe 2O3 in inert and oxidizing atmospheres by various thermal methods

Sylwia Oleszek, Mariusz Grzegorz Grabda, Etsuro Shibata, Takashi Nakamura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

DSC, TG, and TG.MS techniques were used to investigate the reactivity of PbO and Fe2O3 with HBr from thermal degradation of tetrabromobisphenol A under inert and oxidizing atmospheres. The HBr acted as an excellent brominating agent for PbO and separated Pb as a volatile bromide (79 and 90% in He and He + 5 vol% O2, respectively) from the solid up to 580 °C. For Fe2O3, the amount of vaporized bromide was only 20 and 13% under inert and oxidizing atmospheres, respectively. In inert atmosphere the formed char acted as a reducing agent for converting the remaining oxides into metallic forms. For TBBPA + PbO, about 3% of metallic Pb remained in the residue as most of the oxide vaporized below 970 °C. The unreacted Fe2O3 underwent progressive reduction into metallic Fe (75%), which remained in the residue. In oxidizing atmosphere, the unreacted PbO vaporized completely, while the Fe2O3 remained unchanged in the residue. The organic char decomposed and vaporized as carbon mono- and di-oxides. Simultaneous TG-MS measurements indicated that the presence of PbO and Fe2O3 strongly accelerated TBBPA degradation and enhanced char formation.

Original languageEnglish
Pages (from-to)218-225
Number of pages8
JournalThermochimica Acta
Volume566
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Fingerprint

inert atmosphere
Oxides
atmospheres
oxides
Bromides
bromides
thermal degradation
Reducing Agents
Reducing agents
Pyrolysis
Carbon
reactivity
degradation
Degradation
Hot Temperature
tetrabromobisphenol A
carbon

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Study of the reactions between tetrabromobisphenol A and PbO and Fe 2O3 in inert and oxidizing atmospheres by various thermal methods. / Oleszek, Sylwia; Grabda, Mariusz Grzegorz; Shibata, Etsuro; Nakamura, Takashi.

In: Thermochimica Acta, Vol. 566, 01.01.2013, p. 218-225.

Research output: Contribution to journalArticle

Oleszek, Sylwia ; Grabda, Mariusz Grzegorz ; Shibata, Etsuro ; Nakamura, Takashi. / Study of the reactions between tetrabromobisphenol A and PbO and Fe 2O3 in inert and oxidizing atmospheres by various thermal methods. In: Thermochimica Acta. 2013 ; Vol. 566. pp. 218-225.
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