Catalyst Control of Alkylbenzene Molecular Architecture in Tandem Catalytic Hydrogenolysis-Aromatization of Polyethylene

Дата публикации: 08-10-2026 00:00:00

Abstract Upcycling of polyethylene (PE) can transform waste material into chemically valuable building blocks such as linear alkylbenzenes, with potential use in anionic surfactants. Alkylbenzenes can be formed by tandem hydrogenolysis-aromatization of PE, catalyzed by Pt nanoparticles supported on an acidic oxide. In the complex mixture of hydrocarbon products, the difficulty in identifying precise structures makes it hard to predict how the choice of catalyst and variations in PE feedstock will influence molecular architectures. Here, we report a detailed characterization of the alkylbenzenes, with insight into the catalytic mechanism that controls their formation. Acid-catalyzed skeletal isomerization is the key factor that determines branching, initiates cyclization, and dictates aromatic substitution patterns. Highly acidic Pt/F-Al2O3 catalyst yields predominantly 3,4-dialkyl-substituted toluenes, in which the lightly branched alkyl substituents have a very small number of...

Схожие новости

#	Наименование новости	Тональность	Информативность	Дата публикации
1	Intermolecular water attack to alkenylgold carbenes derived from 3-propargylindoles	0	8.42	02-09-2026
2	Silver-catalyzed anionic [3 + 2] cycloaddition of benzyl isocyanides with polyfluoroalkylchromones and pyrones: direct synthesis of 2-arylpyrroles	0	13.32	23-09-2026
3	A study towards the undirected fluorination and chlorination of cubane 1,4-diester	0	9.06	09-09-2026
4	A Theoretical and Experimental Investigation of the Reduction of Dinuclear Persulfide-Bridged Ruthenium Complexes	0	7.66	10-09-2026
5	Turning one of the world's most difficult plastics into premium lubricant	0	7.2	05-08-2026
6	Rearranged polymer chains create degradable materials with potential for stronger, tougher packaging	0	7.24	08-09-2026
7	A new kind of polymer with two faces and a twist control electron spin	0	10.41	20-08-2026
8	Novel plastic turns into a gas when heated—then reforms once cooled	0	8.1	18-08-2026
9	Utilizing time-domain thermoreflectance (TDTR) and developing transient thermoreflectance (TTR) to investigate doping-induced changes in the thermal transport of chemically-doped semiconducting polymer systems	0	10.82	08-10-2026
10	Macropa derivatives for radiopharmaceutical and rare-earth element separation	0	14.14	10-09-2026

Классификация: Наука. Схожих патентов: 0. Схожих новостей: 10. Тональность: 0. Информативность: 6.62. Источник: www.escholarship.org.