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

*この研究の対応する著者

研究成果: Article査読

14 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)218-225
ページ数8
ジャーナルThermochimica Acta
566
DOI
出版ステータスPublished - 2013 1 1
外部発表はい

ASJC Scopus subject areas

  • 器械工学
  • 凝縮系物理学
  • 物理化学および理論化学

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