Understanding the Structure–Activity Relationships in Catalytic Conversion of Polyolefin Plastics by Zeolite-Based Catalysts: A Critical Review

ACS Catalysis, Год журнала: 2022, Номер 12(24), С. 14882 - 14901

Опубликована: Ноя. 23, 2022

Polyolefins, the largest used commodity plastics in world, find extensive application many fields. However, most end up landfills or incineration, leading to severe ecological crises, environmental pollution, and serious resource waste problems. As representatives on chemical upcycling of polyolefin fuels bulk/fine chemicals, catalytic cracking hydrocracking based zeolite metal/zeolite composite catalysts are considered effective paths due their large capacity strong adaptability existing petrochemical equipment. After an overview reaction mechanisms pyrolysis cracking, this review aims comprehensively discuss influence catalyst structure (acidity, pore structure, morphology) activity, selectivity, stability particularly emphasizing importance for matching acidity target product formation. Subsequently, structure–activity relationship between metal site zeolite's acid is also discussed. In end, emerging opportunities challenges proposed promote a more efficient way upcycling.

Язык: Английский

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Photoredox-Catalyzed Plastic Waste Conversion: Nonselective Degradation versus Selective Synthesis

ACS Catalysis, Год журнала: 2023, Номер 13(6), С. 3575 - 3590

Опубликована: Фев. 27, 2023

Plastic waste pollution is becoming one of the most pressing environmental crises due to large-scale production without satisfactory recycling schemes, especially with outbreak COVID-19 pandemic in recent years. Upcycling plastic into valuable chemicals powered by solar energy presents a substantially untapped opportunity turn treasure. In this review, fundamental principles from nonselective degradation selective synthesis are first clarified. Then, we aim outline representative advances photoredox-based catalytic conversion. Particular emphasis placed on valorization regarding versus synthesis. Finally, present challenges and individual insights for further exploration conversion domain. It anticipated that timely critical review would provide an instructive direction foresight plastics value-added chemical feedstocks, thus stimulating development circular sustainable economy coming decades.

Язык: Английский

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Transition metals-catalyzed amination of biomass feedstocks for sustainable construction of N-heterocycles

Coordination Chemistry Reviews, Год журнала: 2023, Номер 502, С. 215622 - 215622

Опубликована: Дек. 26, 2023

Язык: Английский

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Co-upcycling of polyvinyl chloride and polyesters

Nature Sustainability, Год журнала: 2023, Номер 6(12), С. 1685 - 1692

Опубликована: Окт. 9, 2023

Язык: Английский

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Recent advances in plastic recycling and upgrading under mild conditions

Green Chemistry, Год журнала: 2023, Номер 25(18), С. 6949 - 6970

Опубликована: Янв. 1, 2023

This review summarizes the emerging advanced technologies including bio-, photo-, electro-, and low-temperature thermocatalysis for recycling upgrading of waste plastics under mild conditions.

Язык: Английский

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Electrochemical Production of Glycolate Fuelled By Polyethylene Terephthalate Plastics with Improved Techno‐Economics

Small, Год журнала: 2023, Номер 19(39)

Опубликована: Май 25, 2023

Electrochemical valorization of polyethylene terephthalate (PET) waste streams into commodity chemicals offers a potentially sustainable route for creating circular plastic economy. However, PET wastes upcycling valuable C2 product remains huge challenge by the lack an electrocatalyst that can steer oxidation economically and selectively. Here, it is reported catalyst comprising Pt nanoparticles hybridized with γ-NiOOH nanosheets supported on Ni foam (Pt/γ-NiOOH/NF) favors electrochemical transformation real-word hydrolysate glycolate high Faradaic efficiency (> 90%) selectivity across wide reactant (ethylene glycol, EG) concentration ranges under marginal applied voltage 0.55 V, which be paired cathodic hydrogen production. Computational studies combined experimental characterizations elucidate Pt/γ-NiOOH interface substantial charge accumulation gives rise to optimized adsorption energy EG decreased barrier potential determining step. A techno-economic analysis demonstrates that, nearly same amount resource investment, electroreforming strategy towards production raise revenue up 2.2 times relative conventional chemical process. This work may thus serve as framework process net-zero carbon footprint economic viability.

Язык: Английский

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Solar reforming as an emerging technology for circular chemical industries

Nature Reviews Chemistry, Год журнала: 2024, Номер 8(2), С. 87 - 105

Опубликована: Янв. 30, 2024

Язык: Английский

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Machine-learning atomic simulation for heterogeneous catalysis

npj Computational Materials, Год журнала: 2023, Номер 9(1)

Опубликована: Янв. 7, 2023

Abstract Heterogeneous catalysis is at the heart of chemistry. New theoretical methods based on machine learning (ML) techniques that emerged in recent years provide a new avenue to disclose structures and reaction complex catalytic systems. Here we review briefly history atomic simulations then focus trend shifting toward ML potential calculations. The advanced developed by our group are outlined illustrate how networks can be resolved using combination with efficient global optimization methods. future simulation outlooked.

Язык: Английский

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Photocatalysis as an Effective Tool for Upcycling Polymers into Value‐Added Molecules

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(29)

Опубликована: Апрель 13, 2023

Abstract Shaping a sustainable future is closely tied to the development of advanced plastic recycling technologies. As global rates remain low, lion's share post‐consumer plastics either incinerated or disposed in landfills. This unbalanced waste management not only poses severe environmental risks, but also entails an irrevocable loss chemical resources that are embedded synthetic polymers. To give new life, series photocatalytic methods has recently been reported convert polymers directly into value‐added organic molecules. These approaches operate at ambient temperature, show high reactivity/selectivity, and provide alternative reaction pathways as compared thermal depolymerizations. Minireview highlights scientific breakthroughs upcycling through state‐of‐the‐art photocatalysis under environmentally benign conditions.

Язык: Английский

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Solar-driven photocatalysis for recycling and upcycling plastics

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123357 - 123357

Опубликована: Сен. 30, 2023

Язык: Английский

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