TY - JOUR
T1 - Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic
AU - Oshima, Kazumasa
AU - Fujii, Hiromasa
AU - Morita, Kazumasa
AU - Hosaka, Masaki
AU - Muroi, Takashiro
AU - Satokawa, Shigeo
N1 - Funding Information:
This research was supported by the Japan Society for the Promotion of Science (JSPS, 19K20484) and the Cooperative Research Program of Institute for Catalysis, Hokkaido University (Grant no. 19B1012).
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/7/29
Y1 - 2020/7/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85090205242&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85090205242&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.0c02152
DO - 10.1021/acs.iecr.0c02152
M3 - Article
AN - SCOPUS:85090205242
SN - 0888-5885
VL - 59
SP - 13460
EP - 13466
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 30
ER -