Comparison of plastic types for catalytic degradation of waste plastics into liquid product with spent FCC catalyst

Lee, Kyong-Hwan; Noh, Nam-Sun; Shin, Dae-Hyun; Seo, Young‐Hwa

doi:10.1016/s0141-3910(02)00227-6

Cited by 151 publications

(59 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…29,30 It has also been suggested that the derived gases from HDPE pyrolysis are mainly alkenes which are more easily reformed to hydrogen. Additionally, the high content of sulphur (455 ppm) in the MOC and 8.1 wt.% of residual motor oil is also suggested to lower the gas and hydrogen production from the pyrolysis-reforming experiments.…”

Section: Resultsmentioning

confidence: 99%

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Nahil

Miskolczi

et al. 2013

Environ. Sci. Technol.

187

View full text Add to dashboard Cite

Producing both hydrogen and high-value carbon nanotubes (CNTs) derived from waste plastics is reported here using a pyrolysis-reforming technology comprising a two-stage reaction system, in the presence of steam and a Ni-Mn-Al catalyst. The waste plastics consisted of plastics from a motor oil container (MOC), waste commercial high density polyethylene (HDPE) and regranulated HDPE waste containing polyvinyl chloride (PVC). The results show that hydrogen can be produced from the pyrolysis-reforming process, but also carbon nanotubes are formed on the catalyst. However, the content of 0.3 wt.% polyvinyl chloride in the waste HDPE (HDPE/PVC) has been shown to poison the catalyst and significantly reduce the quantity and purity of CNTs. The presence of sulphur has shown less influence on the production of CNTs in terms of quantity and CNT morphologies. Around 94.4 mmol H 2 g -1 plastic was obtained for the pyrolysis-reforming of HDPE waste in the presence of the Ni-Mn-Al catalyst and steam at a reforming temperature of 800 °C. The addition of steam in the process results in an increase of hydrogen production and reduction of carbon yield; in addition, the defects of CNTs e.g. edge dislocations were found to be increased with the introduction of steam (from Raman analysis).

show abstract

Section: Resultsmentioning

confidence: 99%

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Nahil

Miskolczi

et al. 2013

Environ. Sci. Technol.

187

View full text Add to dashboard Cite

show abstract

“…The literature is full of studies that use either a batch or a semi-batch reactor for the catalytic cracking of plastics provided (but not always) with a stirring device [28,38,41,55,70]. The main reason is the ease of their design and operation.…”

Section: Batch/semi-batch Reactorsmentioning

confidence: 99%

Catalytic Upgrading of Plastic Wastes

Aguado

Serrano

Escola

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

View full text Add to dashboard Cite

“…As an example, the experimental data using stirred semi-batch laboratory-scale reactor [7] was obtained from the catalytic degradation of various plastics over spent FCC catalyst at 400…”

Section: Total Mass Balancementioning

confidence: 99%