Depolymerization by transition metal complexes: strategic approaches to convert polymeric waste to feedstocks DOI
Suman Dolai, Chinmoy K. Behera, Sanjib K. Patra

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Conversion of plastic waste into feedstocks by transition metal catalysts: Strategies for converting polymeric through catalytic depolymerization complexes and organometallic compounds are highlighted.

Language: Английский

Advances and Challenges for Catalytic Recycling and Upgrading of Real-World Mixed Plastic Waste DOI
Yawen Shi, Xinyong Diao, Na Ji

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 15(2), P. 841 - 868

Published: Dec. 27, 2024

Catalytic conversion of waste plastic has attracted widespread attention due to pressing environmental issues and energy crisis. Although some methods have been successful in converting single-component waste, unfortunately, the real-world typically made up a mixture various plastics, which poses significant difficulties challenges for catalyst selection product distribution catalytic mixed plastic. Recently, number new technologies developed address plastic, aiming overcome limitations current drive progress this field. This review summarizes recycling upgrading into monomers or value-added chemicals by thermocatalysis, photocatalysis/photothermal catalysis, tandem chemical-biocatalysis. The construction efficient catalysts, understanding reaction pathways, design systems, practical applicability each method are highlighted discussed detail. Our goal is elucidate mechanisms principles process design, providing guidance development, integration optimization that enhance efficiency processing capabilities waste. Furthermore, economic feasibility impact treatment were comprehensively evaluated summarizing techno-economic analysis life cycle assessment studies. Lastly, remaining technological future directions industrial-scale generate products described.

Language: Английский

Citations

4
Robust, Reprocessable and Scalable Ethylene Acrylic Acid Copolymer (EAA) Derived Vitrimer Based on Dual Cross-linked Networks DOI
Shiyu Wang,

Shiji Gao,

Xuanwei Zhang

et al.

Journal of Polymers and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Language: Английский

Citations

0
Anionic Surfactants from Reactive Separation of Hydrocarbons Derived from Polyethylene Upcycling DOI Creative Commons
Yu-Hsuan Lee,

Alexandra Heuston,

Enze Jin

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Chemical upcycling of polyethylene (PE) to long-chain alkylaromatics through tandem hydrocracking/aromatization has potential provide value-added chemicals. However, the liquid product is a complex mixture alkanes, alkylbenzenes, and polyaromatics, limiting its direct usability. The most valuable component alkylbenzenes because their as precursors anionic surfactants. In this study, one-pot reactive separation described. Sulfonating from PE with silica sulfuric acid followed by neutralization sodium hydroxide yields alkylbenzenesulfonates (up 93 mol % selectivity), along separate phase lubricant-range hydrocarbons coproduct. Compared petroleum-based dodecylbenzenesulfonates, reported PE-derived surfactant molecules show competitive physicochemical properties, including surface tension interfacial tension. According life cycle assessment, described reaction strategy demonstrates 20% lower greenhouse gas emissions, when considering uses for coproducts upcycling, compared conventional linear (LAS) manufacturing directly petrochemical feedstocks.

Language: Английский

Citations

0
Sustainable Diesel from Rapeseed Oil Esters by Sequential Semi‐Hydrogenation, Double Bond Isomerization, and Metathesis DOI Creative Commons
Mykhailo Kondratiuk, M. Spiekermann, Thomas Seidensticker

et al.

Chemistry - A European Journal, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Rapeseed oil methyl esters (RME) have been converted to biofuel with a boiling point curve that fulfills the EN 590 specifications for modern diesel engines using robust, three-step process. In first step, polyunsaturated of RME were semi-hydrogenated in presence 20 ppm solvent-stabilized Pd0 colloid. The resulting mono-unsaturated fatty further into defined mixture double-bond isomers by passing them over inexpensive, Brønsted-acidic Amberlyst 15 resin at high space-time yields (1.3 kg⋅L-1⋅h-1). was then blend terminally unsaturated olefins and monoesters, <4.9 % diesters <21 saturated cross-metathesis technical-grade ethylene. this 50 cyclic alkyl amino carbene (CAAC) Ru catalyst M1001 used achieve record-setting conversions (91 %) selectivities (94 %). All three steps conducted neat feedstock mild temperatures (60-100 °C). This demonstrates sustainable fuel use contemporary is accessible from ethylene via short set industrially viable reaction steps.

Language: Английский

Citations

0
Toward a Circular Economy of Heteroatom Containing Plastics: A Focus on Heterogeneous Catalysis in Recycling DOI
Gabriel Perli, Ion Olazabal,

Louise Breloy

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Plastics play a vital role in modern society, but their accumulation landfills and the environment presents significant risks to ecosystems human health. In addition, discarding of plastic waste constitutes loss valuable material. While usual mechanical recycling method often results reduced material quality, chemical offers exciting opportunities valorize into compounds interest. Its versatility leans on broad horizon reactions applicable, such as hydrogenolysis, hydrolysis, alcoholysis, or aminolysis. The development heterogeneous supported organocatalysts has enormous potential enhance economic industrial viability these technologies, reducing cost process mitigating its global environmental impact. This review summarizes challenges chemically heteroatom-containing plastics through catalysis, covering widely used polyesters (notably PET PLA), BPA-polycarbonate (BPA-PC), polyurethane (PU), polyamide (PA), polyether. It examines limitations various solid catalysts, including clays, zeolites, metal–organic frameworks well immobilized enzymes (heterogeneous biocatalysts), for that facilitate recovery high-value products. By reintroducing products economy precursors, this approach supports more sustainable lifecycle plastics, aligning with principles circular economy.

Language: Английский

Citations

0
Boosting Degradation of Polyethylene at Room Temperature DOI
Yiyi Zhao, Peng Liu, Xinyu Meng

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Language: Английский

Citations

0
The role of the Pt-group dehydrogenation catalyst in alkane metathesis for polyolefin deconstruction DOI

Selena Moore,

Andrew V. Tran,

Andreas Palmateer

et al.

Journal of Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 116070 - 116070

Published: March 1, 2025

Language: Английский

Citations

0
Upgrading polyolefin plastics: experiences from petroleum refining and distinct characteristics DOI
Rongxin Zhang, Guangchao Deng, Zhuoyang Jiang

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Language: Английский

Citations

0
Zeolites in the epoch of catalytic recycling plastic waste: Toward circular economy and sustainability DOI
Qing Liu, Jin Shang, Zhendong Liu

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 71, P. 54 - 69

Published: April 1, 2025

Language: Английский

Citations

0
Co-recycling of plastics and other waste materials DOI

Mingyu Chu,

Wei-Lin Tu, Qiao Zhang

et al.

Published: April 28, 2025

Language: Английский

Citations

0