Catalytic degradation of high density polyethylene over nanocrystalline HZSM-5 zeolite

Mastral, J.F.; Berrueco, C.; Gea, M.; Ceamanos, J.

doi:10.1016/j.polymdegradstab.2006.06.009

Cited by 135 publications

(88 citation statements)

References 30 publications

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“…Regarding aromatics, the HZSM-5 catalyst showed the highest activity, because the concentration of aromatic hydrocarbons reached 34.1% using HZSM-5. This result was confirmed by earlier work, when the high activity of HZSM-5 catalyst to the aromatization reactions was concluded [4,10,11,16]. It is also clear, that activated carbon could not increase the aromatic content in pyrolysis oil.…”

Section: Pyrolysis Oilsupporting

confidence: 85%

“…using HZSM-5 they were nearly 60% and 25%, respectively. It 05001-p. 5 was confirmed by earlier work, because it was demonstrated that owing to the small pore size, the HZSM-5 catalyst results especially hydrocarbons in naphtha boiling point range (Bp below 180°C) [10,11,16]. Activated carbon had only a slight effect on the boiling point range, because the temperatures belong to specific distillation volumes, was only slightly lower than that without catalyst.…”

Section: Pyrolysis Oilsupporting

confidence: 59%

“…Aliphatic hydrocarbons (both saturated and unsaturated) are the main products using lower pyrolysis temperatures (<600°C) [4][5][6][7][8][9]. The product yields and composition are affected also by the application of catalysts, which could increase the yield of volatiles (both gases and pyrolysis oils) [10][11][12][13][14]. It was demonstrated, that the structure of zeolites had a key role in relation to the product properties.…”

Section: Introductionmentioning

confidence: 99%

“…E.g. mainly alkanes are produced over yzeolite, while unsaturated hydrocarbons and aromatics are the main fractions using ZSM-5 [4,10,11,16].…”

Section: Introductionmentioning

confidence: 99%

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Fuels by Waste Plastics Using Activated Carbon, MCM-41, HZSM-5 and Their Mixture

Miskolczi

Williams

2016

MATEC Web of Conferences

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Abstract. Waste material was pyrolyzed in a horizontal tubular reactor at 530-540°C using different catalysts, such as activated carbon, MCM-41, HZSM-5 and their mixtures. Products were investigated by gas-chromatography, EDXRFS and standardized methods. Catalysts significantly affected the yields of volatiles; e.g. HZSM-5 catalyst increased especially the yield of gaseous hydrocarbons, while MCM-41 catalyst was responsible for increasing the pyrolysis oil yield. Synergistic effects were found using mixtures of different catalysts. Furthermore the catalysts modified the main carbon frame of the products. Pyrolysis oil obtained over HZSM-5 catalyst contained large amounts of aromatics, while MCM-41 catalyst mainly isomerized the carbon frame. Regarding contaminants it was concluded, that the sulphur content could be significantly decreased by activated carbon, however it had only a slight effect to the other properties of the products.

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Section: Pyrolysis Oilsupporting

confidence: 85%

Section: Pyrolysis Oilsupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

“…E.g. mainly alkanes are produced over yzeolite, while unsaturated hydrocarbons and aromatics are the main fractions using ZSM-5 [4,10,11,16].…”

Section: Introductionmentioning

confidence: 99%

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Fuels by Waste Plastics Using Activated Carbon, MCM-41, HZSM-5 and Their Mixture

Miskolczi

Williams

2016

MATEC Web of Conferences

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“…(Ali et al, 2002). Mastral et al (2006) studied the catalytic degradation of high density polyethylene in a laboratory fluidized bed reactor at mild temperatures, between 350°C and 550°C. The catalyst used was nanocrystalline HZSM-5 zeolite.…”

Section: Introductionmentioning

confidence: 99%

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

Kumar

Singh

2011

Braz. J. Chem. Eng.

249

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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Catalytic Depolymerization of Plastic Waste

Espinosa‐Jalapa,

Kumar

2024

Catalysis for a Sustainable Environment

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Catalytic degradation of high density polyethylene over nanocrystalline HZSM-5 zeolite

Cited by 135 publications

References 30 publications

Fuels by Waste Plastics Using Activated Carbon, MCM-41, HZSM-5 and Their Mixture

Fuels by Waste Plastics Using Activated Carbon, MCM-41, HZSM-5 and Their Mixture

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

Catalytic Depolymerization of Plastic Waste

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