Catalytic Conversion of Chitin Biomass into Key Platform Chemicals DOI
X. Ji, Yi-Chang Lu, Xi Chen

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

This feature article highlights recent progress in shell waste biorefinery, focusing on chitin extraction, upgrading to key chemicals and future research trends.

Language: Английский

Catalytic Upcycling of Polyolefins DOI Creative Commons
Jia‐Kai Sun,

Jinhu Dong,

Lijun Gao

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(16), P. 9457 - 9579

Published: Aug. 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.

Language: Английский

Citations

26
Selective Upcycling of Polyolefins into High-Value Nitrogenated Chemicals DOI

Binzhi Zhao,

Zhibin Hu,

Yichen Sun

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 6, 2024

The selective upcycling of polyolefins to create products increased value has emerged as an innovative approach carbon resource stewardship, drawing significant scientific and industrial interest. Although recent advancements in recycling technology have facilitated the direct conversion hydrocarbons or oxygenated compounds, synthesis nitrogenated compounds from such waste not yet been disclosed. Herein, we demonstrate a novel for by efficiently transforming range postconsumer plastic into nitriles amides. This process leverages catalytic properties manganese dioxide combination with inexpensive nitrogen source, urea, make it both practical economically viable. Our only opens new avenues creation chemicals polyolefin but also underscores critical importance valorizing resources originally derived fossil fuels. study provides strategy sustainable polyolefins.

Language: Английский

Citations

13
Catalytic chemical recycling and upcycling of polyolefin plastics DOI Creative Commons

Yingzi Tan,

Yidan Cheng, Jiaming Xu

et al.

Giant, Journal Year: 2024, Volume and Issue: 19, P. 100307 - 100307

Published: June 14, 2024

Polyolefins are the most produced and widely used polymeric materials. However, chemically inert nature of polyolefins has led to severe environmental pollution, posing a threat human sustenance development. Managing recycling polyolefin plastic waste is crucial for transition from linear sustainable circular economy. Catalytic chemical includes traditional techniques like pyrolysis photolysis, innovative methods that introduce cleavable bonds into chain closed-loop recycling. post-functionalization post-consumer materials another strategy tackle waste, aiming upgrade materials' utility contribute sustainability. Overall, developing catalytic deconstructing upcycling plastics essential encourage better reclamation practices reduce impact waste.

Language: Английский

Citations

9
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
Recent advances in pyrolysis upcycling of waste plastics into hydrocarbon fuels on biochar-based catalysts DOI
Taiyang Liu, Wenxuan Wang, Di Yu

et al.

Applied Energy, Journal Year: 2025, Volume and Issue: 391, P. 125805 - 125805

Published: April 12, 2025

Language: Английский

Citations

0
Laser‐Induced Plasma Effects on Bond Breaking in High‐Density Polyethylene Pyrolysis DOI Creative Commons
Rao Adeel Un Nabi, Hassan Abbas Khawaja,

Y. Liu

et al.

Advanced Materials Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract The conventional use of Laser‐Induced Breakdown Spectroscopy (LIBS) for elemental analysis in high‐density polyethylene (HDPE) limits the exploration bond behavior Physics and Chemistry. A suitable combination process parameters, exceeding dissociation threshold, enables LIBS to break HDPE bonds, facilitating laser‐induced pyrolysis. However, understanding post‐breakage, yield formation pathways, role plasma ionization across laser harmonics is crucial. An experiment conducted using three (1064, 532, 266 nm) at 20 Hz with pulse energies ranging from 3 100 mJ. intense Hα peak 656.3 nm suggests breaking due extensive C‐H hydrogen production. Interestingly, lower photon 1.17 2.3 eV 1064 532 broke attributed effects. Numerical models are used calculate temperatures electron density, classifying types. Plasma parameters such as cooling time, rate, energy expansion velocity analyzed. Results show that all contributed breaking: induced field‐induced plasma, favored intermediate multiphoton dominated by photon‐induced plasma. These findings help optimize

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
Fast Catalytic Pyrolysis of Waste Tire for Enhanced Monocyclic Aromatic Hydrocarbons Using Ni Modified Zsm-5 Zeolite Catalyst DOI

Boyu Qu,

Ye Shui Zhang, Hangseok Choi

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Coupling Conversion of CO2 and High‐carbon Alkane to CO and Gasoline DOI Open Access

Shenghui Tao,

Shimin Liu, Liping Zhang

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Catalytic conversion of CO 2 to valuable products is a promising way reduce anthropogenic emission. Herein, strategy for coupling and high‐carbon alkane gasoline developed, which feasible choice the combination recycling petroleum refining. The reaches 2.6% under mild condition (270 °C), selectivity in cracking exceeds 70 wt%. Additionally, introduction improves aromatic hydrocarbons increases octane number gasoline. Mechanism studies indicate that synergistic effect between Brønsted acid centers Ni sites on Beta zeolite supported (20 wt%) catalyst (20Ni/β) plays key role reduction. Notably, 13 isotopic experiments show hydrogen produced during aromatization can be captured by , inhibiting undesired transfer pathways enhanced yield aromatics, while converted into CO.

Language: Английский

Citations

0
Microwave-assisted pyrolysis of low-density polyethylene (LDPE)to value-added products over HY, HZSM-5 and Hβ catalyst DOI

RohitR. Mishra,

Paresh H. Rana, Parimal A. Parikh

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: unknown, P. 110829 - 110829

Published: Oct. 1, 2024

Language: Английский

Citations

0