Preparation and application of metal loaded ZSM-5 and y-zeolite catalysts for thermo-catalytic pyrolysis of real end of life vehicle plastics waste

Miskolczi, Norbert; Juzsakova, Tatjana; Sója, János

doi:10.1016/j.joei.2017.10.017

Cited by 87 publications

(60 citation statements)

References 28 publications

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“…The bands related to internal linkages in SiO 4 or AlO 4 − of zeolite lattices are observed at 1,230, 1,100, and 796 cm −1 for modified and unmodified samples 24,31,32 . Typical changes observed in the FTIR spectra of copper‐modified samples are that the intensive adsorption bands at 1,100 cm −1 for nano‐ZSM‐5 shifted to a lower wave number and its intensity was found to have decreased with increasing concentration of metal nitrate solution 33 . The intensity of the band at 550 cm −1 , which is attributed to structure sensitive vibration of double rings of ZSM‐5, was found to have decreased with copper loading indicating a decrease of crystallinity 34 …”

Section: Resultsmentioning

confidence: 93%

Effect of copper on textural and acidic properties of hierarchical nanocrystalline ZSM‐5

P¹,

Kumari²,

Aneesh³

2020

Asia-Pacific J Chem Eng

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In this work, hierarchically porous nanocrystalline ZSM-5 was synthesized hydrothermally. Different concentrations of copper were incorporated into the matrix by ion exchange method. The synthesized samples were characterized by means of X-ray diffraction (XRD), Fourier-transform infrared (FTIR), energydispersive X-ray spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), ultraviolet (UV), 27 Al magic angle spinning nuclear magnetic resonance spectroscopy, and nitrogen sorption analysis. The acid sites on the surface of Cu-ZSM-5 have been systematically investigated using temperature-programmed desorption of ammonia (NH 3-TPD) and pyridine sorption followed by FTIR. The diffraction pattern obtained from XRD studies confirmed the typical Mobil Five. NH 3-TPD reveals the enhancement of acidity achieved by copper. The FTIR spectra of pyridine desorbed samples show that the intensity of bands corresponding to Lewis acidity increases by modification. The ZSM-5 zeolite samples exhibit spherical-shaped MFI crystal structure. The UV spectrum indicates that copper has been doped in the form of cations or in the form of oxides. XPS analysis confirms that the copper exists as Cu(I) and Cu(II). The nitrogen sorption isotherms reveal that the modified samples are mesoporous in nature. The pore volume and diameter were found to be enhanced by the modification. The better textural properties and acidic properties of the Cu-ZSM-5 can make it suitable for catalyzing organic reactions. K E Y W O R D S acidic and textural properties, copper, hierarchical nanocrystalline ZSM-5, ion exchange

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Section: Resultsmentioning

confidence: 93%

Effect of copper on textural and acidic properties of hierarchical nanocrystalline ZSM‐5

P¹,

Kumari²,

Aneesh³

2020

Asia-Pacific J Chem Eng

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“…[193] Because of this, nickel and other transition metals have been heavily studied as dopant or heteroatom replacements within zeolitic catalysts. [104,113,[197][198][199][200] These metal dopants will result in different metal-support interactions dependent on their dispersion, which can result in variations in product yields. [198] The addition of these heteroatoms was found to decrease activation energies of decomposition while increasing cracking and improving yield towards hydrogen gas and aromatic hydrocarbons in the product oil.…”

Section: Doped Zeolitesmentioning

confidence: 99%

“…[198] The addition of these heteroatoms was found to decrease activation energies of decomposition while increasing cracking and improving yield towards hydrogen gas and aromatic hydrocarbons in the product oil. [104,113,197] For example, the wet impregnation of HZSM-5 and MCM-41 with Fe or Ni resulted in improved cracking performance for the conversion of Br-HIPS as compared to their parent catalyst. [104] It was determined that Fe 2 O 3 and NiO particles were dispersed throughout the pores of HZSM-5 and MCM-41, however it is important to note that the pore diameters increased in HZSM-5 with the addition of the metals.…”

Section: Doped Zeolitesmentioning

confidence: 99%

“…Overall, Fe was found to increase ethylbenzene and styrene concentration within the pyrolysis oil -independent of pore structure -while Ni dopants slightly enhanced the concentration of styrene dimers and substituted derivatives. [104,113,197] Bimetallic porous solid-acid catalysts have also been explored for the conversion of plastic waste. For example, styrene-based plastic conversion over FeÀ Ni bimetallic MCM-41 was found to increase yield of gaseous products while reducing wax formation, as compared to the parent or monometallic catalyst.…”

Section: Doped Zeolitesmentioning

confidence: 99%

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The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

2020

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, respectively. Her graduate research focused on the fundamental understanding of deoxygenation mechanisms for biomass probe molecules on single crystals and thin films. During her graduate career, she received the DOE Science Graduate Student Research (SCGSR) award (2019) and conducted surface science research at Brookhaven National Lab. She now is a postdoctoral researcher at the University of Wisconsin-Madison. Her research focuses on surface spectroscopy and controlled design of heterogeneous catalysts. Melissa C. Cendejas received her B.A. (2016) in Chemistry and English from Williams College. There, she worked on the synthesis of conjugated organic molecules and phosphorusbased surfactants. She then started her PhD in Chemistry at the University of Wisconsin-Madison under the supervision of Prof. Ive Hermans. She studies active site formation on boron-based catalysts. She received the DOE Office of Science Graduate Student Research (SCGSR) award (2020) to perfrom in situ x-ray spectroscopy of catalysts at Stanford Synchrotron Radiation Lightsourse. Prof. Dr. Ive Hermans obtained his Ph.D. from KU Leuven University in Belgium in 2006. In addition to his scientific education, he also holds a postgraduate degree in Business Administration (KU Leuven, 2006). After postdoctoral research on in situ spectroscopy and reaction engineering with Prof. Alfons Baiker, he became assistant professor for heterogeneous catalysis (spring 2008) at ETH Zurich in Switzerland. January 2014, Prof. Hermans moved to the University of Wisconsin-Madison, holding a dual appointment in the Department of Chemistry and the Department of Chemical and Biological Engineering. His group focuses on the mechanistic understanding of catalytic technology using a variety of techniques.

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“…Miskolczi et al [173] proposed a study about the modification of zeolite catalysts by metal loading for using ELV plastic waste pyrolysis. Sato et al [174] proposed an evaluation method to assess benefits with enabling energy consumption and carbon dioxide emission.…”

Section: Recycling Production and Planningmentioning

confidence: 99%

End-of-life vehicle management: a comprehensive review

Karagöz

Aydın

Šimić

2019

J Mater Cycles Waste Manag

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Waste management is gaining very high importance in recent years. As automotive is one of the most critical sectors worldwide, which is rapidly increasing, the management of end-of-life vehicles (ELVs) gains importance day by day. Due to legislation and new regulations, actors like users, producers, and treatment facilities are being conferred new responsibilities in the ELV management process. Besides, the ELV management is of vital importance for environment conservation, circular economy and sustainable development. All of these reasons are making the ELV management such a crucial issue to study. Today, the ELV management is a well-positioned and emergent research area. However, the available review papers are focused only on a small area of the ELV management, such as reverse logistics, recovery infrastructure, disassemblability, etc. Besides, a review of state-of-the-art mathematical models for the ELV management is still missing. This paper aims to provide an extensive content analysis overview of studies on the ELV management. A total of 232 studies published in the period 2000-2019 are collected, categorized, reviewed and analyzed. A critical review of the published literature is provided. Gaps in the literature are identified to clarify and suggest future research directions. This review can provide a source of references, valuable insights, and opportunities for researchers interested in the ELV management and inspire their additional attention.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Preparation and application of metal loaded ZSM-5 and y-zeolite catalysts for thermo-catalytic pyrolysis of real end of life vehicle plastics waste

Cited by 87 publications

References 28 publications

Effect of copper on textural and acidic properties of hierarchical nanocrystalline ZSM‐5

Effect of copper on textural and acidic properties of hierarchical nanocrystalline ZSM‐5

The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

End-of-life vehicle management: a comprehensive review

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