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Full Description
Systematic coverage of thermal, electrocatalytic, and photocatalytic PET recycling pathways
Mechanical recycling of PET often yields lower-quality materials, driving demand for chemical approaches that recover monomers or upcycle waste into high-value products. Chemical Recycling of Polyethylene Terephthalate: Methods and Principles provides a systematic treatment of depolymerization strategies, from established thermal catalytic reforming to emerging electrocatalytic and photocatalytic methods. Each chapter compares traditional and advanced processes, detailing mechanisms, catalyst innovations, and process efficiencies.
The book covers seven thermal catalytic pathways—glycolysis, methanolysis, hydrolysis, ammonolysis, aminolysis, acidolysis, and hydrogenolysis—before examining photo-driven and photoelectrochemical systems that harness solar energy for PET upcycling. Coverage extends to photothermal catalysis, enzyme-assisted processes, and integration with green energy systems. A concluding analysis addresses market trends, regulatory drivers, and future research directions for scaling chemical recycling.
Readers will also find:
Detailed process comparisons and practical recommendations for selecting catalysts and optimizing depolymerization efficiency across multiple recycling pathways
Coverage of upcycling PET waste into high-value chemicals and fuels using advanced catalytic and photochemical conversion strategies
Analysis of solar-driven and electrochemical recycling systems integrating renewable energy with polymer waste valorization techniques
Discussion of multi-waste management concepts that combine PET chemical recycling with broader solid waste treatment approaches
Forward-looking assessment of regulatory drivers, market trends, and research directions shaping the future of PET chemical recycling
Designed for polymer chemists, environmental chemists, and plastics technologists, this reference delivers the mechanistic detail and process-level comparisons needed to evaluate, select, and advance chemical recycling strategies. Researchers and industry professionals working on sustainable polymer management will find actionable guidance on catalyst design, system integration, and upcycling pathways.
Contents
Preface vii
1 Introduction 1
2 Thermal Catalytic Reforming 11
2.1 Alcoholysis 11
2.1.1 Glycolysis 12
2.1.2 Methanolysis 24
2.2 Hydrolysis 33
2.2.1 Based on Neutral System 34
2.2.2 Based on Acid System 44
2.2.3 Based on Alkaline System 50
2.3 Ammonolysis and Aminolysis 59
2.4 Acidolysis 63
2.5 Hydrogenolysis 67
2.6 Conclusion 70
3 Electrocatalytic Reforming 83
3.1 Electrocatalytic Reforming Path of PET 84
3.2 Advanced Coupled System 94
3.2.1 Coupling with HER 94
3.2.2 Coupling with NO3RR 101
3.2.3 Coupling with CO2RR 106
3.3 Conclusion 110
4 Photocatalytic Reforming 117
4.1 Carbon Nitride-based Photocatalyst 117
4.2 Metal Oxide-based Photocatalyst 130
4.3 Metal Sulfide-based Photocatalyst 134
4.4 Other Advanced Photocatalysts 136
4.5 Conclusion 138
5 Advanced Photo-driven/Assisted Reforming System 143
5.1 Photothermal Reforming 143
5.1.1 Dominated by Photocatalysis 144
5.1.2 Dominated by Thermal Catalysis 149
5.1.3 Synergy of Photocatalysis and Thermal Catalysis 153
5.2 Photo-electrocatalytic Reforming 155
5.2.1 PEC System Constructed by Photoanode 156
5.2.2 PEC System Constructed by Photocathode 159
5.3 Conclusion 162
6 Mechanochemical Recycling 167
6.1 Principle of Mechanochemistry 167
6.2 Ball Milling 173
6.3 Solid-state Shear Milling 181
6.4 Mechanochemical Extrusion 183
6.5 Mechano-catalysis Recycling 185
References 188
About the Authors 193
Index 195
