Efficient and selective degradation of polyethylenes into liquid fuels and waxes under mild conditions

Jia, Xiangqing; Qin, Chuan; Friedberger, Tobias; Guan, Zhibin; Huang, Zheng

doi:10.1126/sciadv.1501591

Cited by 351 publications

(303 citation statements)

References 38 publications

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“…However, the product distribution of thermal cracking is dependent on feed, temperature and residence time. Though various reports appeared in the literature that dealt with the linear alpha olefin production from thermal wax and polyethylene cracking, a systematic study involving feed and temperature dependent LAO product distribution is not reported. 7−10 The traditional approach to obtain the “optimal parameters” for the required LAO synthesis in batch or continuous process involves the reactions at different temperatures with various feed stocks in the quantities of ∼100 g scale and the separation of the fractions for speciation analysis through GC‐MS.…”

Section: Introductionsupporting

confidence: 84%

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Ramachandrarao¹,

Naresh²,

Panday

et al. 2019

ChemistrySelect

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The feed and temperature dependent Linear Alpha olefins (LAOs) product distribution in fast pyrolysis of wax and polyethylene plastic waste was investigated by using pyrolysis‐GC‐MS (Py‐GC‐MS) technique. The optimal pyrolysis temperature to obtain the C6 to C14 LAOs was found to be largely dependent on feed carbon length. The shorter the feed, higher the temperature required and vice versa. The wax with carbon numbers C35 to C60 is an ideal feed stock for LAO production with minimal side products

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Section: Introductionsupporting

confidence: 84%

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Ramachandrarao¹,

Naresh²,

Panday

et al. 2019

ChemistrySelect

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“…6 Recently, a cocatalytic system based on a tandem dehydrogenation-metathesis sequence was applied to polyethylene (PE). 7 The depolymerization relies on the selectively of one catalyst to dehydrogenate PE, forming internal double bonds, and an olefin metathesis catalyst to cleave the polymer into smaller segments at the double bonds.…”

Section: Spi Codes 2 and 4: Hdpe And Ldpementioning

confidence: 99%

Catalyst: Design Challenges for the Future of Plastics Recycling

Garcı́a

2016

Chem

118

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“…[136] In addition to acidic properties, noble metals (e. g., Pt, Ir, Ru, Rh) supported on metal oxides have been found to improve nalkane hydrogenolysis. [137,[234][235][236][237][238][239] In particular, the conversion of polyolefins over SrTiO 3 perovskite nanocubes to support welldispersed Pt nanoparticles yields high-quality liquid products (lubricants and waxes) with a narrow distribution of carbon chains under 170 psi H 2 and 300°C. [137] The success of the catalyst was attributed to the electronic and geometric properties of Pt/SrTiO 3 , where there was a lattice-match between FCC Pt and the SrTiO 3 {100} facets, which resulted in significant metal-support interactions and prevented sintering.…”

Section: Metal Oxidesmentioning

confidence: 99%

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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Efficient and selective degradation of polyethylenes into liquid fuels and waxes under mild conditions

Abstract: A catalytic alkane metathesis provides a mild and selective degradation of polyethylene wastes into valuable fuels and waxes.

Cited by 351 publications

References 38 publications

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Catalyst: Design Challenges for the Future of Plastics Recycling

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

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