Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic

Kazumasa Oshima, Hiromasa Fujii, Kazumasa Morita, Masaki Hosaka, Takashiro Muroi, Shigeo Satokawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

To promote the recycling of carbon-fiber-reinforced plastic (CFRP), catalytic cracking of hazardous gases generated by thermal decomposition from epoxy-based CFRP composites was performed. We aimed for selective phenol recovery and hazardous gas removal using a zeolite catalyst. The BEA-type zeolite with Si/Al = 92.5 showed high conversion and low naphthalene selectivity. Thermal decomposition at 500 °C produced bisphenol from the epoxy resin in the CFRP. Then, bisphenol was decomposed into phenol, cresol, and methylbenzofuran over the zeolite catalyst. However, naphthalene was formed under long contact time conditions. The temperature for catalytic cracking could be decreased to 350 °C, which was lower than that for the CFRP thermal decomposition (around 500 °C). Therefore, the process of selective phenol recovery and hazardous gas removal from CFRP thermal decomposition gas can be driven by the waste heat generated during CFRP thermal decomposition.

Original languageEnglish
Pages (from-to)13460-13466
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume59
Issue number30
DOIs
Publication statusPublished - Jul 29 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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