Computers & Chemical Engineering, Год журнала: 2024, Номер 189, С. 108800 - 108800
Опубликована: Июль 10, 2024
Язык: Английский
Chemical Reviews, Год журнала: 2024, Номер 124(16), С. 9457 - 9579
Опубликована: Авг. 16, 2024
The large production volumes of commodity polyolefins (specifically, polyethylene, polypropylene, polystyrene, and poly(vinyl chloride)), in conjunction with their low unit values multitude short-term uses, have resulted a significant pressing waste management challenge. Only small fraction these is currently mechanically recycled, the rest being incinerated, accumulating landfills, or leaking into natural environment. Since are energy-rich materials, there considerable interest recouping some chemical value while simultaneously motivating more responsible end-of-life management. An emerging strategy catalytic depolymerization, which portion C-C bonds polyolefin backbone broken assistance catalyst and, cases, additional molecule reagents. When products molecules materials higher own right, as feedstocks, process called upcycling. This review summarizes recent progress for four major upcycling strategies: hydrogenolysis, (hydro)cracking, tandem processes involving metathesis, selective oxidation. Key considerations include macromolecular reaction mechanisms relative to mechanisms, design transformations, effect conditions on product selectivity. Metrics describing critically evaluated, an outlook future advances described.
Язык: Английский
Процитировано
35
Energy & Fuels, Год журнала: 2024, Номер 38(3), С. 1676 - 1691
Опубликована: Янв. 22, 2024
Mechanical recycling of plastic waste is not sustainable and inefficient in terms the resources needed to accomplish process, quality materials obtained from this technique substandard. Chemical polymers appears be preferable because technology allows for production new materials. This review compiles most recent research which selected transition metals are used as catalysts hydrogenolytic depolymerization polyolefins a polymer upcycling process. Hydrogenolysis an emerging chemical method that uses transition-metal complexes presence hydrogen cleave C–C bonds substances into shorter hydrocarbons. Transition such Ruthenium (Ru), Platinum (Pt), Nickel (Ni), Cobalt (Co), Zirconium (Zr), Tantalum (Ta), Rhodium (Rh) have been utilized recently type reaction. hydrogenolysis can produce valuable hydrocarbon products, gas/liquid fuels lubricating oils, under relatively milder operational conditions with less environmental impact. The focused on supported metal organometal catalytic system their mechanism polyolefin pathways detailed investigation impact reaction parameters high gasoline, diesel, light lubricants.
Язык: Английский
Процитировано
25
Chemical Engineering Journal, Год журнала: 2024, Номер 487, С. 150468 - 150468
Опубликована: Март 15, 2024
Язык: Английский
Процитировано
18
Energy Conversion and Management, Год журнала: 2025, Номер 326, С. 119511 - 119511
Опубликована: Янв. 16, 2025
Язык: Английский
Процитировано
7
Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 338, С. 123071 - 123071
Опубликована: Июль 6, 2023
Язык: Английский
Процитировано
24
Advanced Energy Materials, Год журнала: 2024, Номер 14(15)
Опубликована: Фев. 13, 2024
Abstract Hydrogen is one of the most important energy alternatives to conventional fossil‐based fuel. Solar based photocatalytic hydrogen evolution (PHE) a salient approach produce fuel but its efficiency generally limited by sluggish and energy‐unfavorable oxidation reaction. Meanwhile, waste treatment has become worldwide problem clean highly demanded avoid vast greenhouse emission currently. Inspiringly, PHE can be effectively coupled with favorable photooxidation many wastes, which kills two birds stone. In this review, recent progress in presented, where typical solid, liquid, gas wastes have been briefly discussed. Focusing on understanding complicated reaction mechanism revelation products, cutting‐edge techniques for photophysics surface chemistry characterization analyzed, are imperative facilitate following investigation. Finally, developing trend existing issues current research also discussed detail so that holistic blueprint portrayed accelerate their application realistic world.
Язык: Английский
Процитировано
18
ChemSusChem, Год журнала: 2024, Номер unknown
Опубликована: Май 17, 2024
Abstract Polystyrene is a staple plastic in the packaging and insulation market. Despite its good recyclability, willingness of PS recycling remains low, largely due to high cost limited profitability. This review examines research progresses, gaps, challenges areas that affect costs, including but not logistics, design, policymaking. We critically evaluate recent developments upcycling strategies, we particularly focus on tandem hydrogen‐atom transfer (HAT) strategies. conclude future studies should only reaction chemistry mechanisms also economic viability processes. The goal this stimulate development innovative strategies with low costs output values. hope technological momentum towards sustainable circular economy.
Язык: Английский
Процитировано
13
Green Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
A novel waste plastic pyrolysis oil hydrocracking process uniquely integrating simulation with advanced deep learning models for multi-objective optimization.
Язык: Английский
Процитировано
2
Energy Reports, Год журнала: 2025, Номер 13, С. 1590 - 1607
Опубликована: Янв. 21, 2025
Язык: Английский
Процитировано
1
Chemical Engineering Journal, Год журнала: 2024, Номер 486, С. 150332 - 150332
Опубликована: Март 11, 2024
Язык: Английский
Процитировано
8