2026-01-21 九州大学
高分子酸触媒PAFR IIによるPOMから有用物質へのケミカルアップサイクリング
＜関連情報＞
- https://www.kyushu-u.ac.jp/ja/researches/view/1392
- https://www.kyushu-u.ac.jp/f/64498/26_0121_01.pdf
- https://pubs.rsc.org/en/content/articlelanding/2026/gc/d5gc06065f
ppmレベルの再利用可能なポリマー酸触媒を使用して、廃棄ポリオキシメチレンを付加価値化学物質にアップサイクルする Upcycling waste polyoxymethylene to value-added chemicals using reusable polymeric acid catalysts at ppm levels
Abhijit Sen,Aya Ohno,Andrew Chapman,Yina Xu,Jingxuan Zhang,Nobutaka Maeda,Jordan T. Carlson and Yoichi M. A. Yamada
Green Chemical Published:12 Jan 2026
DOI:https://doi.org/10.1039/D5GC06065F
Abstract
Waste polyoxymethylene (POM) plastic was upcycled using m-phenolsulfonic acid-formaldehyde resin, a polymeric heterogeneous catalyst, to afford multiple value-added chemicals, including solvents, insecticides, herbicides, and pillar[5]arenes using biomass-derived alcohols, amines or water as reactants. The acid catalyst exhibited stable and reliable performance at a 260 mol ppm S loading and remained active after five reuse cycles without any loss of catalytic efficiency. The upcycling process was effective even at a 40-gram scale. Under acid-catalyzed conditions, the POM moiety in carbon-fiber-reinforced polymers (CFRPs; 360 mg–5 g scale) was selectively depolymerized, yielding carbon fibers free of POM residues, as confirmed by solid-state NMR and SEM. This process also mitigates environmental concerns by converting microplastics into value-added chemicals. Additionally, microwave irradiation proved more effective (up to 99% upcycling) than conventional heating methods (73%). Life cycle assessment analysis results indicate that this upcycling process is sustainable and helps reduce environmental pollution.
