
Solids, Journal Year: 2025, Volume and Issue: 6(1), P. 10 - 10
Published: March 6, 2025
With the rapid increase in polyethylene terephthalate (PET) usage recent years, recycling has become indispensable mitigating environmental damage and safeguarding natural resources. In this context, study presents a methodology for valorizing PET waste through phase transfer catalytic hydrolysis conducted at low temperature (80 °C) atmospheric pressure, with goal of recovering terephthalic acid (TPA) monomer. The recovered TPA monomer was subsequently utilized as precursor synthesis metal–organic frameworks (MOFs). Tributylhexadecyl phosphonium bromide (3Bu6DPB) selected catalyst due to its efficiency sustainability. process parameters, including concentration NaOH, wt.% PET, solution, were varied optimize reaction. Taguchi design an L9 (3^3) orthogonal array employed analyze influence these factors on depolymerization time. analysis variance (ANOVA) results revealed that NaOH most significant factor, contributing 93.3% efficiency, followed by (6.5%). findings also demonstrated had greatest impact (Δ = 4.27, rank 1), while smallest effect 0.16, 3). optimal conditions achieved 75 min 20 g/100 mL 12 5 PET. further organic ligand synthesize Fe(III)-TPA MOFs under mild °C 24 h). X-ray diffraction (XRD) simultaneous formation MOF-235(Fe) MIL-101(Fe), two multifunctional materials diverse properties applications. This highlights efficient approach producing low-cost promoting urban recycling, integrated strategy resource valorization.
Language: Английский