2025-11-14 科学技術振興機構,東京都立大学
図 1 ペットボトルのケミカルリサイクル（a）回収したペットボトルをチップ状に砕いた物（リサイクル工場での使用品）。（b）反応前の様子（145 度、メタノール、鉄触媒）。
＜関連情報＞
- https://www.jst.go.jp/pr/announce/20251114/index.html
- https://www.jst.go.jp/pr/announce/20251114/pdf/20251114.pdf
- https://pubs.acs.org/doi/10.1021/acssusresmgt.5c00447
FeCl 3 -アミン触媒システムを用いたアルコールとのエステル交換反応によるPET廃棄物ボトル、繊維廃棄物の定量的化学変換 Quantitative Chemical Conversion of PET Waste Bottles, Textile Wastes by Exclusive Transesterification with Alcohols by FeCl3–Amine Catalyst Systems
Youshu Jiang,Kanticha Jaiyen,Mohamed Mehawed Abdellatif,and Kotohiro Nomura
ACS Sustainable Resource Management Published:November 12, 2025
DOI:https://doi.org/10.1021/acssusresmgt.5c00447
Abstract
Quantitative chemical recycling of PET waste bottles and textile waste has been attained by transesterification with alcohol using a FeCl3–benzimidazole catalyst system affording corresponding terephthalic acid diesters [dimethyl terephthalate (DMT), diethyl terephthalate (DET), bis(hydroxyethyl)terephthalate (BHET) etc.] exclusively even under scale-up conditions. The addition of a small amount (1.0–3.0 equiv) of benzimidazole (or pyridine) enhanced the activity without diminishing the exclusive selectivity.
