Simultaneous recovery of H2-rich syngas and removal of HCN during pyrolytic recycling of polyurethane by Ni/Mg/Al catalysts

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Polyurethanes (PUs) such as flexible (cushioning material and sponge) and rigid (different insulators) forms and elastomers (flexible tube and smartphone case) were thermally decomposed at 500 °C. The useless decomposition products were converted into H2-rich syngas and the toxic HCN in it was removed by Ni/Mg/Al catalysts at 800 °C under 50 vol% steam/He flow. The resultant total gas production was 1411–1623 mL/g (H2: 794–967 mL/g), which was almost 30 times larger than that obtained from simple pyrolysis of PUs where no H2 was produced. Meanwhile, there was a drastic reduction of HCN concentration in the product gas from a maximum at 2.8 to 0.2–0.6 vol%. The excellent performance on the removal of HCN and the enhanced H2-rich syngas production is due to the synergy between Ni, Mg, and Al in the catalysts. This approach has great promise for treating a variety of PU wastes that cannot be recycled effectively otherwise.

本文言語English
ページ(範囲)408-415
ページ数8
ジャーナルChemical Engineering Journal
361
DOI
出版ステータスPublished - 2019 4 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 環境化学
  • 化学工学(全般)
  • 産業および生産工学

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