Gasoline and diesel-like fuel production by continuous catalytic pyrolysis of waste polyethylene and polypropylene mixtures over USY zeolite

Kassargy, Chantal; Awad, Sary; Burnens, Gaëtan; Kahine, Khalil; Tazerout, Mohand

doi:10.1016/j.fuel.2018.03.113

Cited by 87 publications

(48 citation statements)

References 23 publications

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“…The CP of HDPE and PP over DeBeta also revealed a higher reaction efficiency on cracking and aromatics formation compared to that over AMF because DeBeta had not only high acidity, but also mesopore structure. Therefore, DeBeta having micro/mesopores and high acidity can produce aromatic hydrocarbons more efficiently than AMF via scission, isomerization, cyclisation, hydrogen transfer, and oligomerization [12,25,26]. Figure 6 shows the yields of aromatic hydrocarbons produced from the CP of HDPE and PP over different amounts of DeBeta.…”

Section: Resultsmentioning

confidence: 99%

“…produce aromatic hydrocarbons more efficiently than AMF via scission, isomerization, cyclisation, hydrogen transfer, and oligomerization [12,25,26]. Figure 6 shows the yields of aromatic hydrocarbons produced from the CP of HDPE and PP over different amounts of DeBeta.…”

Section: Resultsmentioning

confidence: 99%

“…In particular, a large amount of toluene was produced from the CP of plastics using DeBeta. Between the two plastics, PP showed a higher efficiency on the production of aromatic hydrocarbons than HDPE, because PP has branched carbon chains that can be decomposed more easily by the catalytic reaction than PEs [12]. (b) Figure 6.…”

Section: Resultsmentioning

confidence: 99%

“…Although a large quantity of hydrocarbons can be produced by the pyrolysis of waste plastics, the product quality of waste plastics pyrolysis differs according to the type of plastic. Among the various types of waste plastic, polyethylene (PE) and polypropylene (PP) are difficult to be converted to proper fuel or chemical feedstock by simple pyrolysis, because most PE and PP pyrolysis products consist of low quality wax with a wide carbon number distribution (≥C30) [12], and need to be upgraded by applying an additional process. Catalytic pyrolysis (CP) of PE and PP can not only allow a decrease in the pyrolysis reaction temperature, but also produce high product quality.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic Pyrolysis of Polyethylene and Polypropylene over Desilicated Beta and Al-MSU-F

Lee

Park

2018

Catalysts

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The catalytic pyrolysis (CP) of different thermoplastics, polyethylene (PE) and polypropylene (PP), over two types of mesoporous catalysts, desilicated Beta (DeBeta) and Al-MSU-F (AMF), was investigated by thermogravimetric analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS). Catalytic TGA of PE and PP showed lower decomposition temperatures than non-catalytic TGA over both catalysts. Between the two catalysts, DeBeta decreased the decomposition temperatures of waste plastics further, because of its higher acidity and more appropriate pore size than AMF. The catalytic Py-GC/MS results showed that DeBeta produced a larger amount of aromatic hydrocarbons than AMF. In addition, CP over AMF produced a large amount of branched hydrocarbons.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic Pyrolysis of Polyethylene and Polypropylene over Desilicated Beta and Al-MSU-F

Lee

Park

2018

Catalysts

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“…A smart approach to the recycling of post-consumer PP items envisages both to transform them into new consumer items and to protect the environment. As recycling methods for PP, the following are known-primary recycling, mechanical (secondary recycling), chemical and pyrolysis methods [17][18][19]. Among these methods, the secondary recycling is preferable for reducing the amount of plastic waste, both from economic and ecological perspectives.…”

Section: Introductionmentioning

confidence: 99%

Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

et al. 2020

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The recycled polypropylene (rPP) materials that meet technical requirements such as reducing the dimensions and improving the tensile, elongation, impact strength, thermal stability, as well as melt processing, are required for the manufacturing industry. In this paper, we studied the mechanical and thermal properties of post-consumer rPP by adding both synthesized thermoplastic elastomers, and glass bubbles (GB) by a melt allowing process. Styrene-butadiene (SBS) and styrene-isoprene (SIS) block-copolymers that had a styrene content of 30 wt% were synthesized by anionic sequential polymerization. The obtained post-consumer rPP composites were characterized by optical microscopy, scanning electron microscopy (SEM), mechanical analyses (tensile, density, hardness, VICAT softening temperature (VST), heat deflection temperature (HDT), dynamic mechanical analysis (DMA), IZOD strength) and thermal analyses (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)). Weight reduction and improvement of the tensile, elongation, impact strength, thermal stability, as well as melt processing of post-consumer recycled polypropylene (rPP) properties compounded with thermoplastic elastomers and glass bubbles, sustain the use of these formulations for engineering applications.

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Polyethylene Upgrading to Liquid Fuels Boosted by Atomic Ce Promoters

Wu,

Wang,

Zhang

et al. 2024

Angewandte Chemie

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Hydrocracking catalysis is a key route to plastic waste upgrading, but the acid site‐driven C‐C cleavage step is relatively sluggish in conventional bifunctional catalysts, dramatically effecting the overall efficiency. We demonstrate here a facile and efficient way to boost the reactivity of acid sites by introducing Ce promoters into Pt/HY catalysts, thus achieving a better metal‐acid balance. Remarkably, 100 % of LDPE can be converted with 80.9 % selectivity of liquid fuels over the obtained Pt/5Ce‐HY catalysts at 300 °C in 2 h. For comparison, Pt/HY only gives 38.8% of LDPE conversion with 21.3% selectivity of liquid fuels. Through multiple experimental studies on the structure‐performance relationship, the Ce species occupied in the supercage are identified as the actual active sites, which possess remarkably‐improved adsorption capability towards short‐chain intermediates.

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Gasoline and diesel-like fuel production by continuous catalytic pyrolysis of waste polyethylene and polypropylene mixtures over USY zeolite

Cited by 87 publications

References 23 publications

Catalytic Pyrolysis of Polyethylene and Polypropylene over Desilicated Beta and Al-MSU-F

Catalytic Pyrolysis of Polyethylene and Polypropylene over Desilicated Beta and Al-MSU-F

Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

Polyethylene Upgrading to Liquid Fuels Boosted by Atomic Ce Promoters

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