2017
DOI: 10.1080/09593330.2017.1281351
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Pyrolysis–catalysis of waste plastic using a nickel–stainless-steel mesh catalyst for high-value carbon products

Abstract: A stainless-steel mesh loaded with nickel catalyst was produced and used for the pyrolysis-catalysis of waste high-density polyethylene with the aim of producing high-value carbon products, including carbon nanotubes (CNTs). The catalysis temperature and plastic-to-catalyst ratio were investigated to determine the influence on the formation of different types of carbon deposited on the nickel-stainless-steel mesh catalyst. Increasing temperature from 700 to 900°C resulted in an increase in the carbon deposited… Show more

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Cited by 32 publications
(26 citation statements)
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“…By comparing the different oxidation characteristics of the FCC catalysts, the results enable the identification of the different phases of carbon/coke present, based on the differing thermal stability of the two types of carbon/coke depositions. Amorphous carbon is oxidized at a lower temperature (<600 o C), compared with the graphitic carbon, since the latter filamentous carbon has higher thermal stability [36][37][38][39][40][41].…”
Section: Characterization Methodsmentioning
confidence: 99%
“…By comparing the different oxidation characteristics of the FCC catalysts, the results enable the identification of the different phases of carbon/coke present, based on the differing thermal stability of the two types of carbon/coke depositions. Amorphous carbon is oxidized at a lower temperature (<600 o C), compared with the graphitic carbon, since the latter filamentous carbon has higher thermal stability [36][37][38][39][40][41].…”
Section: Characterization Methodsmentioning
confidence: 99%
“…Considering the unwanted nature of the generation of these carbon deposits, the economic throughput of the H2 production process from hydrocarbons may be enhanced by means of the production of value-added carbon materials ( Figure 17). For instance, char is reported in the literature as a promising precursor for graphene production [305,306], whereas the coke deposited on the catalyst (catalytic routes) may be in the form of carbon nanotubes [307,308], whose morphology shows multiple favorable applications [309].…”
Section: Figure 17mentioning
confidence: 99%
“…Recovery of the carbon nanotubes from the catalysts via acid dissolution of the catalyst has been used, but reported to damage the structure of the carbon nanotubes [76]. A novel catalyst in the form of nickel impregnated steel mesh was reported to produce high yields of carbon nanotubes and carbon nanofibers which were reported to be easily removed from the mesh substrate by a mechanical process [121].…”
Section: Reactor Design For Carbon Nanotube Production From Waste Plamentioning
confidence: 99%
“…The carbon nanotubes can become encapsulated and intermingled with the catalyst particles, making recovery of the carbon nanotubes difficult. Zhang et al [121] used a two-stage pyrolysiscatalytic reactor with a novel nickel impregnated stainless steel mesh in the catalyst stage to produce carbon nanotubes. The plastic used was high density polyethylene.…”
Section: Influence Of Process Conditions On Carbon Nanotube Productiomentioning
confidence: 99%
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