Investigation of catalytic degradation of high-density polyethylene by hydrocarbon group type analysis

Seo, Young‐Hwa; Lee, Kyong-Hwan; Shin, Dae-Hyun

doi:10.1016/s0165-2370(02)00186-9

Cited by 186 publications

(109 citation statements)

References 14 publications

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“…Miskolczi et al (2008) studied the catalytic degradation of waste high density polyethylene with three different catalysts (equilibrium FCC, HZSM-5 and clinoptilolite). Seo et al (2003) studied the catalytic degradation of waste high density polyethylene to hydrocarbons by ZSM-5, zeolite-Y, mordenite and amorphous silica-alumina in a batch reactor and investigated the cracking efficiency of catalysts by analyzing the oily products, including paraffins, olefins, naphthenes and aromatics, with gas chromatography/mass spectrometry (GC/MS).…”

Section: Introductionmentioning

confidence: 99%

Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis

Kumar

Singh

2011

Braz. J. Chem. Eng.

238

117

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-Thermal degradation of waste plastics in an inert atmosphere has been regarded as a productive method, because this process can convert waste plastics into hydrocarbons that can be used either as fuels or as a source of chemicals. In this work, waste high-density polyethylene (HDPE) plastic was chosen as the material for pyrolysis. A simple pyrolysis reactor system has been used to pyrolyse waste HDPE with the objective of optimizing the liquid product yield at a temperature range of 400ºC to 550ºC. Results of pyrolysis experiments showed that, at a temperature of 450ºC and below, the major product of the pyrolysis was oily liquid which became a viscous liquid or waxy solid at temperatures above 475ºC. The yield of the liquid fraction obtained increased with the residence time for waste HDPE. The liquid fractions obtained were analyzed for composition using FTIR and GC-MS. The physical properties of the pyrolytic oil show the presence of a mixture of different fuel fractions such as gasoline, kerosene and diesel in the oil.

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Section: Introductionmentioning

confidence: 99%

Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis

Kumar

Singh

2011

Braz. J. Chem. Eng.

238

117

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“…Several authors have studied the application of these catalysts to the pyrolysis of plastic materials (Vasile et al, 1985 and1988;Beltrame et al, 1989;Audisio et al, 1992;Lin & White, 1995;Ochoa et al, 1996;Serrano et al, 2001;Aguado et al, 2001;Marcilla et al, 2003;Seo et al, 2003;Ribeiro et al, 2006). Therefore, the objective of this work was the evaluation of the performance of commercial FCC catalysts (low, medium and high activities).…”

Section: Introductionmentioning

confidence: 99%

Kaolin and commercial fcc catalysts in the cracking of loads of polypropylene under refinary conditions

Ribeiro

Júnior

Costa

2013

Braz. J. Chem. Eng.

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-The efficiency of Commercial FCC catalysts (low, medium and high activities) was evaluated by the catalytic cracking process of combined feeds of polypropylene (PP) and vaseline, using a microactivity test unit (M.A.T.) for the production of fuel fractions (gasoline, diesel and residue). The PP/vaseline loads, at 2.0% and 4.0% wt, were processed under refinery conditions (load/catalyst ratio and temperature of process). For the PP/vaseline load (4.0% wt), the production of the gasoline fraction was favored by all catalysts, while the diesel fraction was favored by PP/vaseline load (2.0% wt), showing a preferential contact of the zeolite external surface with the end of the polymer chains for the occurrence of the catalytic cracking. All the loads produced a bigger quantity of the gaseous products in the presence of highly active commercial FCC catalyst. The improvement in the activity of the commercial FCC catalyst decreased the production of the liquid fractions and increased the quantity of the solid fractions, independent of the concentration of the loads. These results can be related to the difficulty of the polymer chains to access the catalyst acid sites, occurring preferentially end-chain scission at the external surface of the catalyst.

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“…Thus, TG and micro-reactors have been widely used to pyrolyse plastics with zeolite-based acid catalysts (Marcilla et al, 2001;. Catalytic pyrolysis of polyethylene samples has also been carried out in the laboratory scale reactors, such as batch reactors (Seo et al, 2003, Van Grieken et al, 2001), semi-batch reactors (with evacuation of volatile products) (Akpanudoh et al2005, Cardona andCorma, 2002) and fixed beds .…”

Section: Catalytic Degradationmentioning

confidence: 99%

“…Thermal and catalytic degradation of polyethylene was conducted by Seo et al 2003 at atmospheric pressure in a batch type reactor as is illustrated in Fig. 4.…”

Section: Batch Reactorsmentioning

confidence: 99%

Recent Advances in the Chemical Recycling of Polymers (PP, PS, LDPE, HDPE, PVC, PC, Nylon, PMMA)

Achilias¹,

Andriotis²,

Koutsidis³

et al. 2012

Material Recycling - Trends and Perspectives

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Investigation of catalytic degradation of high-density polyethylene by hydrocarbon group type analysis

Cited by 186 publications

References 14 publications

Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis

Recovery of hydrocarbon liquid from waste high density polyethylene by thermal pyrolysis

Kaolin and commercial fcc catalysts in the cracking of loads of polypropylene under refinary conditions

Recent Advances in the Chemical Recycling of Polymers (PP, PS, LDPE, HDPE, PVC, PC, Nylon, PMMA)

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