Understanding the important variables to optimize glycolysis of polyethylene terephthalate with lanthanide-containing ionic liquids

Abstract

Lanthanide metal ionic liquids (MILs) are tunable catalysts for the glycolysis of poly(ethylene terephthalate). Enhanced cooperativity with high ionic liquid : metal salt ratios lowers the required metal content to increase catalyst sustainability.

Chemical recycling of polyester textile wastes: shifting towards sustainability

“…These results were attributed to the large polymer surface area, even in the presence of additives and dyes. 198 Liu et al used amino acid ionic liquid catalyst and determined the optimal conditions by response surface methodology (RSM) to obtain 84.5% BHET yields on PET fibres. 199…”

Guanidine functionalized porous SiO2 as heterogeneous catalysts for microwave depolymerization of PET and PLA

“…The method involves reacting PET, excess diol, usually ethylene glycol (EG) and a catalyst, with the product bis(2-hydroxyethyl) terephthalate (BHET) being obtained. Many catalysts are effective for this transformation such as metal oxides, 5,6 nanoparticles, 7–9 metal salts and metal-containing ionic liquids, 5,10,11 and organocatalysts. 12–18…”