Catalytic degradation of waste rubbers and plastics over metal-modified HY zeolites to produce aromatic hydrocarbons

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dc.contributor.authorWang J
dc.contributor.authorJiang J
dc.contributor.authorSun Y
dc.contributor.authorWang X
dc.contributor.authorLi M
dc.contributor.authorRuan R
dc.contributor.authorRagauskas AJ
dc.contributor.authorOk YS
dc.contributor.authorTsang DCW
dc.contributor.authorPang, Shusheng
dc.date.accessioned2021-06-02T21:00:34Z
dc.date.available2021-06-02T21:00:34Z
dc.date.issued2021en
dc.date.updated2021-05-10T22:40:32Z
dc.description.abstractCatalytic conversion of waste rubbers and plastics into aromatic hydrocarbons is a promising approach to waste management and energy recovery. In the present study, acidic HY zeolites were supported by cobalt, iron, and zirconium, and the catalysts were characterized by powder X-ray diffraction, nitrogen adsorption-desorption, ammonia temperature programmed desorption, X-ray photoelectron spectroscopy, and pyridine-Fourier transform infrared spectroscopy. The catalytic degradation of waste polybutadiene rubbers (BR) was conducted to investigate the degradation mechanism and evaluate the catalytic activity of supported zeolites. Experimental results indicated that HY loaded by zirconium and iron led to a higher content of Lewis acid sites as opposed to cobalt supported one. Compared with the non-catalytic pyrolysis of BR, the zirconium supported HY (Zr/HY) led to a 10-fold increase in aromatic hydrocarbons production with a distinctively high selectivity of 97.9%. A series of waste polymers including waste tires (WT), polyethylene (PE), polycarbonate (PC), and BR, were subjected to catalytic pyrolysis to explore the effects of polymer type on aromatic hydrocarbons generation, and BR was the most effective substrate, with yield enhancement reaching 2.4 over Zr/HY. Catalytic co-pyrolysis of waste rubbers and plastics was conducted to probe the effect of polymer structure on aromatic hydrocarbons formation, where a significant synergistic effect was observed in the PE co-fed with PC run.en
dc.identifier.citationWang J, Jiang J, Sun Y, Wang X, Li M, Pang S, Ruan R, Ragauskas AJ, Ok YS, Tsang DCW (2021). Catalytic degradation of waste rubbers and plastics over metal-modified HY zeolites to produce aromatic hydrocarbons. Journal of Cleaner Production. 127469-127469.en
dc.identifier.doihttp://doi.org/10.1016/j.jclepro.2021.127469
dc.identifier.issn0959-6526
dc.identifier.urihttps://hdl.handle.net/10092/101968
dc.languageen
dc.language.isoen
dc.publisherElsevier BVen
dc.rightsAll rights reserved unless otherwise stateden
dc.rights.urihttp://hdl.handle.net/10092/17651en
dc.subjectcatalytic pyrolysisen
dc.subjectsustainable waste managementen
dc.subjectpolybutadiene rubberen
dc.subjectplastic recycling/valorizationen
dc.subjectaromatic hydrocarbonsen
dc.subject.anzsrcFields of Research::40 - Engineering::4004 - Chemical engineering::400402 - Chemical and thermal processes in energy and combustionen
dc.subject.anzsrcFields of Research::40 - Engineering::4011 - Environmental engineering::401106 - Waste management, reduction, reuse and recyclingen
dc.titleCatalytic degradation of waste rubbers and plastics over metal-modified HY zeolites to produce aromatic hydrocarbonsen
dc.typeJournal Articleen
uc.collegeFaculty of Engineering
uc.departmentChemical and Process Engineering
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