Hydroreforming of the oils from LDPE thermal cracking over Ni–Ru and Ru supported over hierarchical Beta zeolite

Serrano, David; Escola, J.M.; Briones, L.; Medina, Sonia; Martı́nez, Agustı́n

doi:10.1016/j.fuel.2014.12.040

Cited by 49 publications

(30 citation statements)

References 34 publications

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“…For the Ru/MMG catalyst, conversion of gas slightly declined to 43%, then after 6 h stabilized to 40%. These results show that the bimetallic catalyst more active and stable than monometallic one, which might result from the well dispersed nickel is encapsulated by ruthenium to form larger clusters that limits nickel nanoparticle deactivation during the reaction [31,32]. After 7 h the deactivation accruing on bimetallic catalyst, it is because of some nickel nanoparticle outside of clusters that coated with coke which collected over longer reaction time immediately reduced catalyst activity.…”

Section: Bulletin Of Chemical Reaction Engineering and Catalysismentioning

confidence: 97%

Oligomerization of C2-C4 Hydrocarbons in the Presence of Ruthenium-Nickel Supported Catalysts

Toktassyn

Utelbayev

Souza

et al. 2016

Bull. Chem. React. Eng. Catal.

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The oligomerization of C2-C4 light hydrocarbon gasses in the presence of ruthenium and nickel supported catalysts is investigated. Determined selectivity of the catalysts by isooctane. Catalytic properties of the catalysts depend on the supported metals on the carrier. The nature of carrier also affects on reaction selectivity. The ruthenium-nickel supported bimetallic pillared montmorillonite is showed good selectivity to isooctane and value is about 60.8% at conversion 87.0%.

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Section: Bulletin Of Chemical Reaction Engineering and Catalysismentioning

confidence: 97%

Oligomerization of C2-C4 Hydrocarbons in the Presence of Ruthenium-Nickel Supported Catalysts

Toktassyn

Utelbayev

Souza

et al. 2016

Bull. Chem. React. Eng. Catal.

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“…[122] In addition, the mesoporous nature allows the deposition of highly dispersed metals or metal oxides to create of multifunctional catalysts with enhanced activity. [122,123,[210][211][212][213][214][215][216][217] Compared to the microporous zeolite, hierarchical zeolites have improved cracking activity, rendering higher yield of C 2 À C 5 hydrocarbons and delayed deactivation as a result of the secondary porosity. [122] For example, hierarchical ZSM-23 were found to have higher conversion efficiency and lower operating temperature for UHMWPE degradation as compared to unmodified ZSM-23 due to secondary porosity and improved external surface area and acidity.…”

Section: Hierarchical and Core-shell Catalystsmentioning

confidence: 99%

“…[210] There exist numerous synthesis techniques to create hierarchical porous structures and each yield catalytically different materials due to accessibility to active sites and strength of acid sites. [122,123,[210][211][212][213][214][215][216][217] For example, two different hierarchical βzeolite catalysts have been investigated for the cracking of HDPE in a recent study. [123] The two catalysts differed in the mesopore generation synthesis technique where one utilized cetyltrimethylammonium cations (CTAB + ) to reorganize zeolitic nanounits around the CTAB micelles while the other functionalized the nanounits with an organosilane.…”

Section: Hierarchical and Core-shell Catalystsmentioning

confidence: 99%

“…Such catalysts have faster intracrystalline diffusion, lower steric hindrances for the conversion of bulky compounds, and higher resistance to coke deposition compared to typical microporous zeolites [122] . In addition, the mesoporous nature allows the deposition of highly dispersed metals or metal oxides to create of multifunctional catalysts with enhanced activity [122,123,210–217] . Compared to the microporous zeolite, hierarchical zeolites have improved cracking activity, rendering higher yield of C 2 −C 5 hydrocarbons and delayed deactivation as a result of the secondary porosity [122] .…”

Section: Heterogeneous Catalystsmentioning

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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“…As to various examination contemplated Ni substance, Ni 7%/h-Beta comprises a somewhat encouraging impetus for acquiring top notch energizes from LDPE pyrolysis oils. Serrano et al [56] has inferred that the crisp bimetallic Ni-Ru impetuses marginally improved the light diesel to partake in the hydroreforming of the oils originating from LDPE warm splitting. All the different fraction of catalyst gives <20% of heavy diesel fraction without any residue.…”

Section: Catalytic Hydrocrackingmentioning

confidence: 99%

Plastic fuel Extraction from Various Waste Plastics

Pradeep¹,

Gowthaman²

2019

IJEAT

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The rapid growth of the world population which leads to increase demand of plastic in many sectors such as construction, medical, engineering applications, automotive, aerospace and many food industries for packing purpose. These rapid populations of plastic create some serious issues to the environment and living beings. The plastics are non- degradable and emit poisonous gases during burning. In recent years, many researches being conducted to resolve the disposal issues of waste plastics and trying to convert it into useful products. The plastic is a material consists of any wide range of synthetic or semi-synthetic organic compounds, which are long molecules built around chains of carbon and hydrogen atoms. The conversion of waste plastics to hydrocarbon (HC) fuel is an effective idea for disposing of waste plastics. It will be controlled plastic population and fulfill the needs of petroleum fuel in the future. As per the survey, the fossil fuels run out earlier in 2088 due to drastic growth of automobiles and high production cost. The waste plastic contains hydrocarbon with calorific value of 41- 47MJ and it is almost equal to the calorific value of fossil fuels. There are many methods being used to extract liquid HC fuel from waste plastics and it has been reviewed elaborately in this paper. It also reviews composition of various plastics like polyethylene terephthalate, high density polyethylene, low density polyethylene, polyvinyl chloride and polypropylene polystyrene and analyse their properties. In addition, it includes the selection of plastic and catalyst for extraction process, research gap in the existing extraction methods and the effect temperature and process timing on oil yield.

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Hydroreforming of the oils from LDPE thermal cracking over Ni–Ru and Ru supported over hierarchical Beta zeolite

Cited by 49 publications

References 34 publications

Oligomerization of C2-C4 Hydrocarbons in the Presence of Ruthenium-Nickel Supported Catalysts

Oligomerization of C2-C4 Hydrocarbons in the Presence of Ruthenium-Nickel Supported Catalysts

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

Plastic fuel Extraction from Various Waste Plastics

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