Depolymerization of PET Fibers through Chemical Recycling Using a Micro-sized MgO-SiO2 Catalyst for Producing High Purity Hydroxyethyl Terephthalate with High Yield
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Chemical recycling offers a method for closed-loop recycling of polyethylene terephthalate (PET). This study explores the chemical recycling of PET fibers via glycolysis using a micro-sized catalyst. Recycling PET fibers is challenging due to the removal of additives and dyes from textiles. A micro-sized catalyst was chosen for its efficiency in glycolysis and ease of separation, addressing issues with traditional catalysts. The catalyst, synthesized by wet impregnation, showed superior performance with negligible metal contamination. Our findings indicate that the micro-sized catalyst simplifies removal, improves BHET purity, and enhances efficiency, leading to higher yields. This study demonstrates the potential of micro-sized catalysts in PET fiber glycolysis, promoting sustainable recycling and offering an alternative for the industrial upcycling of PET textile wastes.