Materials Circular Economy, Journal Year: 2025, Volume and Issue: 7(1)
Published: April 12, 2025
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152727 - 152727
Published: June 1, 2024
Language: Английский
Citations
25
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(3), P. 1676 - 1691
Published: Jan. 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.
Language: Английский
Citations
22
Science, Journal Year: 2024, Volume and Issue: 385(6715), P. 1322 - 1327
Published: Aug. 29, 2024
The selective conversion of polyethylene (PE), polypropylene (PP), and mixtures these two polymers to form products with high volume demand is urgently needed because current methods suffer from low selectivity, produce large quantities greenhouse gases, or rely on expensive, single-use catalysts. isomerizing ethenolysis unsaturated polyolefins could be an energetically environmentally viable route propylene isobutylene; however, noble-metal homogeneous catalysts polyolefin are currently required the process has been limited PE. We show that simple combination tungsten oxide silica sodium gamma-alumina transforms PE, PP, a mixture two, including postconsumer forms materials, isobutylene in greater than 90% yield at 320°C without need for dehydrogenation starting polyolefins.
Language: Английский
Citations
18
Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 222, P. 110712 - 110712
Published: Feb. 22, 2024
Language: Английский
Citations
14
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
Science Advances, Journal Year: 2024, Volume and Issue: 10(15)
Published: April 12, 2024
Zeolite-catalyzed polyethylene (PE) aromatization achieves reduction of the aromatic yield via hydrogenation and hydrogenolysis reactions. The hydrogen required for CO 2 can be provided by H radicals formed during aromatization. In this study, we efficiently convert PE into aromatics using a zeolite–metal oxide catalyst (HZSM-5 + CuZnZrO x ) at 380°C under hydrogen- solvent-free reaction conditions. Hydrogen, derived from over HZSM-5, diffuses through Brønsted acidic sites zeolite to adjacent , where it is captured in situ produce bicarbonate further hydrogenated CO. This favors while inhibiting secondary An 62.5 wt % achieved, which 60% consisted benzene, toluene, xylene (BTX). conversion reaches values as high 0.55 mmol g −1 . aromatization–hydrogen capture pathway provides feasible scheme comprehensive utilization waste plastics
Language: Английский
Citations
12
Chemical Science, Journal Year: 2024, Volume and Issue: 15(23), P. 8606 - 8624
Published: Jan. 1, 2024
Electrochemistry shows promising new avenues in the recycling of polymeric materials. This work reviews electrochemical depolymerization, post-polymerization functionalization, and paired catalysis, highlighting future challenges opportunities.
Language: Английский
Citations
10
Iranian Polymer Journal, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 8, 2025
Language: Английский
Citations
1
Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125129 - 125129
Published: Feb. 1, 2025
Language: Английский
Citations
1
National Science Review, Journal Year: 2023, Volume and Issue: 10(9)
Published: Aug. 9, 2023
Language: Английский
Citations
20