Effect of Sb2O3 in brominated heating impact polystyrene (HIPS-Br) on thermal degradation and debromination by iron oxide carbon composite catalyst (Fe-C)

Thallada Bhaskar, Toshiki Matsui, Azhar Uddin, Jun Kaneko, Akinori Muto, Yusaku Sakata

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The iron oxide carbon composite catalyst (Fe-C) was prepared and used for catalytic debromination process during pyrolysis of heating impact polystyrene (HIPS-Br) with various brominated flame retardants at 430°C into fuel oil. The effect of antimony oxide (Sb2O3: synergist) in HIPS-Br containing decabromo diphenyl oxide (DDO) and decabromo diphenyl ethane (DDE) as flame retardant was investigated. The thermal degradation of HIPS-Br produced various brominated hydrocarbons and also hydrobromic acid (HBr) in addition to various hydrocarbons. The synergist (Sb2O3) reacted with the hydrogen bromide evolved during the pyrolysis process and formed the SbBr3 in the liquid products. The presence of bromine content (organic and inorganic) in liquid products is not desirable to use as a fuel oil. The use of iron oxide carbon composite catalyst (Fe-C) during pyrolysis debrominated (ca. 99%) the bromine compounds from liquid products. The presence of Sb2O3 (5 wt.%) decreased both the hydrogen bromide and brominated hydrocarbons by forming SbBr3 and produced high quantity of lower hydrocarbons (C7-C11). Thermogravimetric analysis (TGA) revealed that the presence of Sb2O3 in HIPS-Br decreased the degradation temperature. Powder X-ray diffraction results showed the presence of Fe3O4 phase in fresh Fe-C. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) shows the presence of Sb and Br in used Fe-C catalyst in the degradation process.

Original languageEnglish
Pages (from-to)229-241
Number of pages13
JournalApplied Catalysis B: Environmental
Volume43
Issue number3
DOIs
Publication statusPublished - Jul 10 2003
Externally publishedYes

Fingerprint

Hydrobromic Acid
Polystyrenes
Brominated Hydrocarbons
Iron oxides
iron oxide
Pyrolysis
Carbon
catalyst
Hydrocarbons
Fuel Oils
Flame Retardants
hydrocarbon
pyrolysis
heating
Heating
degradation
Catalysts
carbon
Composite materials
Fuel oils

Keywords

  • Fuel oil
  • HIPS-Br
  • Iron oxide catalyst
  • Pyrolysis
  • SbO-synergist

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Environmental Chemistry

Cite this

Effect of Sb2O3 in brominated heating impact polystyrene (HIPS-Br) on thermal degradation and debromination by iron oxide carbon composite catalyst (Fe-C). / Bhaskar, Thallada; Matsui, Toshiki; Uddin, Azhar; Kaneko, Jun; Muto, Akinori; Sakata, Yusaku.

In: Applied Catalysis B: Environmental, Vol. 43, No. 3, 10.07.2003, p. 229-241.

Research output: Contribution to journalArticle

@article{2ba315acc3aa4b70a0826ff9b7e2e49f,
title = "Effect of Sb2O3 in brominated heating impact polystyrene (HIPS-Br) on thermal degradation and debromination by iron oxide carbon composite catalyst (Fe-C)",
abstract = "The iron oxide carbon composite catalyst (Fe-C) was prepared and used for catalytic debromination process during pyrolysis of heating impact polystyrene (HIPS-Br) with various brominated flame retardants at 430°C into fuel oil. The effect of antimony oxide (Sb2O3: synergist) in HIPS-Br containing decabromo diphenyl oxide (DDO) and decabromo diphenyl ethane (DDE) as flame retardant was investigated. The thermal degradation of HIPS-Br produced various brominated hydrocarbons and also hydrobromic acid (HBr) in addition to various hydrocarbons. The synergist (Sb2O3) reacted with the hydrogen bromide evolved during the pyrolysis process and formed the SbBr3 in the liquid products. The presence of bromine content (organic and inorganic) in liquid products is not desirable to use as a fuel oil. The use of iron oxide carbon composite catalyst (Fe-C) during pyrolysis debrominated (ca. 99{\%}) the bromine compounds from liquid products. The presence of Sb2O3 (5 wt.{\%}) decreased both the hydrogen bromide and brominated hydrocarbons by forming SbBr3 and produced high quantity of lower hydrocarbons (C7-C11). Thermogravimetric analysis (TGA) revealed that the presence of Sb2O3 in HIPS-Br decreased the degradation temperature. Powder X-ray diffraction results showed the presence of Fe3O4 phase in fresh Fe-C. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) shows the presence of Sb and Br in used Fe-C catalyst in the degradation process.",
keywords = "Fuel oil, HIPS-Br, Iron oxide catalyst, Pyrolysis, SbO-synergist",
author = "Thallada Bhaskar and Toshiki Matsui and Azhar Uddin and Jun Kaneko and Akinori Muto and Yusaku Sakata",
year = "2003",
month = "7",
day = "10",
doi = "10.1016/S0926-3373(02)00306-5",
language = "English",
volume = "43",
pages = "229--241",
journal = "Applied Catalysis B: Environmental",
issn = "0926-3373",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Effect of Sb2O3 in brominated heating impact polystyrene (HIPS-Br) on thermal degradation and debromination by iron oxide carbon composite catalyst (Fe-C)

AU - Bhaskar, Thallada

AU - Matsui, Toshiki

AU - Uddin, Azhar

AU - Kaneko, Jun

AU - Muto, Akinori

AU - Sakata, Yusaku

PY - 2003/7/10

Y1 - 2003/7/10

N2 - The iron oxide carbon composite catalyst (Fe-C) was prepared and used for catalytic debromination process during pyrolysis of heating impact polystyrene (HIPS-Br) with various brominated flame retardants at 430°C into fuel oil. The effect of antimony oxide (Sb2O3: synergist) in HIPS-Br containing decabromo diphenyl oxide (DDO) and decabromo diphenyl ethane (DDE) as flame retardant was investigated. The thermal degradation of HIPS-Br produced various brominated hydrocarbons and also hydrobromic acid (HBr) in addition to various hydrocarbons. The synergist (Sb2O3) reacted with the hydrogen bromide evolved during the pyrolysis process and formed the SbBr3 in the liquid products. The presence of bromine content (organic and inorganic) in liquid products is not desirable to use as a fuel oil. The use of iron oxide carbon composite catalyst (Fe-C) during pyrolysis debrominated (ca. 99%) the bromine compounds from liquid products. The presence of Sb2O3 (5 wt.%) decreased both the hydrogen bromide and brominated hydrocarbons by forming SbBr3 and produced high quantity of lower hydrocarbons (C7-C11). Thermogravimetric analysis (TGA) revealed that the presence of Sb2O3 in HIPS-Br decreased the degradation temperature. Powder X-ray diffraction results showed the presence of Fe3O4 phase in fresh Fe-C. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) shows the presence of Sb and Br in used Fe-C catalyst in the degradation process.

AB - The iron oxide carbon composite catalyst (Fe-C) was prepared and used for catalytic debromination process during pyrolysis of heating impact polystyrene (HIPS-Br) with various brominated flame retardants at 430°C into fuel oil. The effect of antimony oxide (Sb2O3: synergist) in HIPS-Br containing decabromo diphenyl oxide (DDO) and decabromo diphenyl ethane (DDE) as flame retardant was investigated. The thermal degradation of HIPS-Br produced various brominated hydrocarbons and also hydrobromic acid (HBr) in addition to various hydrocarbons. The synergist (Sb2O3) reacted with the hydrogen bromide evolved during the pyrolysis process and formed the SbBr3 in the liquid products. The presence of bromine content (organic and inorganic) in liquid products is not desirable to use as a fuel oil. The use of iron oxide carbon composite catalyst (Fe-C) during pyrolysis debrominated (ca. 99%) the bromine compounds from liquid products. The presence of Sb2O3 (5 wt.%) decreased both the hydrogen bromide and brominated hydrocarbons by forming SbBr3 and produced high quantity of lower hydrocarbons (C7-C11). Thermogravimetric analysis (TGA) revealed that the presence of Sb2O3 in HIPS-Br decreased the degradation temperature. Powder X-ray diffraction results showed the presence of Fe3O4 phase in fresh Fe-C. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) shows the presence of Sb and Br in used Fe-C catalyst in the degradation process.

KW - Fuel oil

KW - HIPS-Br

KW - Iron oxide catalyst

KW - Pyrolysis

KW - SbO-synergist

UR - http://www.scopus.com/inward/record.url?scp=0037860957&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037860957&partnerID=8YFLogxK

U2 - 10.1016/S0926-3373(02)00306-5

DO - 10.1016/S0926-3373(02)00306-5

M3 - Article

VL - 43

SP - 229

EP - 241

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

IS - 3

ER -