Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic

Oshima, Kazumasa; Fujii, Hiromasa; Morita, Kazumasa; Hosaka, Masaki; Muroi, Takashiro; Satokawa, Shigeo

doi:10.1021/acs.iecr.0c02152

Cited by 15 publications

(7 citation statements)

References 45 publications

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“…TR-GC/MS allows to simultaneously combine the in situ and ex situ contact modes. Thus, Park et al 74 Oshima et al 75 achieved phenol recovery from carbon-fiber-reinforced plastic (CFRP) by zeolite catalysts screening using TR-GC/MS (Entry 33). TR-GC/MS allowed catalyst stability test by multiple introduction of CFRP without catalyst exchange and regeneration, revealed the product distribution change during 12 times of CFRP introduction and necessity of catalyst regeneration in the actual application.…”

Section: Py-gc For Feedstock Recycling Of Plasticsmentioning

confidence: 99%

Latest Trends in Pyrolysis Gas Chromatography for Analytical and Applied Pyrolysis of Plastics

Kumagai

2020

ANAL. SCI.

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Pyrolysis is considered a promising method for polymer characterization (in the field of analytical pyrolysis) and for chemical feedstock recovery from plastic wastes (in the field of applied pyrolysis) because it can decompose any polymeric material into smaller molecules by applying heat alone in an inert atmosphere. Pyrolysis-gas chromatography (Py-GC) involves pyrolyzing polymeric materials in a micropyrolyzer and the subsequent direct GC analysis of pyrolyzates. Py-GC has immense potential for application in the fields of both analytical and applied pyrolysis, allowing rapid and accurate analysis of pyrolyzates. This is beneficial for elucidating microstructure and composition of polymers and for rapid screening of pyrolysis conditions for designing feedstock recycling processes. In this review, we examined latest research trends in Py-GC for application in polymer characterization, analysis of plastics in environment, and chemical feedstock recovery from plastics.

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Section: Py-gc For Feedstock Recycling Of Plasticsmentioning

confidence: 99%

Latest Trends in Pyrolysis Gas Chromatography for Analytical and Applied Pyrolysis of Plastics

Kumagai

2020

ANAL. SCI.

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“…As such, material recovered in this way is usually made into powder for filling or as a reinforcing material. (2) Chemical recovery: separate CFs from the matrix resin [2,9,[31][32][33][34][35][36][37][38]. The damage to recovered CFs is minimal, but the cost of chemical agents is high and this technology is still very much in its infancy.…”

Section: Introductionmentioning

confidence: 99%

Studies on Recycling Silane Controllable Recovered Carbon Fiber from Waste CFRP

Chin

Shiue

et al. 2022

Sustainability

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During the production process of commercial carbon fiber reinforced polymers (CFRPs), a silane coupling agent is added to the carbon fiber at the sizing step as a binder to enhance the product’s physical properties. While improving strength, the silane coupling agent results in a silane residue on recovered carbon fibers (rCF) after recycling, which is a disadvantage when using recovered carbon fibers in the manufacture of new materials. In this study, the rCF is recovered from waste carbon fiber reinforced polymers (CFRPs) from the bicycle industry by a microwave pyrolysis method, applying a short reaction time and in an air atmosphere. Moreover, the rCF are investigated for their surface morphologies and the elements present on the surface. The silicon element content changes with pyrolysis temperature were 0.4, 0.9, and 0.2%, respectively, at 450, 550, and 650 °C. Additionally, at 950 °C, silicon content can be reduced to 0.1 ± 0.05%. The uniformity of microwave pyrolysis recycle treatment was compared with traditional furnace techniques used for bulk waste treatment by applying the same temperature regime. This work provides evidence that microwave pyrolysis can be used as an alternative method for the production of rCFs for reuse applications.

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“…4 Moreover, the product selectivity can be further improved by using a catalyst in the thermal cracking process. 5 ZSM-5 is the most widely used catalyst in the catalytic cracking process because of its unique shape-selective catalytic ability and better hydrothermal stability. ZSM-5 is commonly manufactured with pure raw materials, e.g.…”

Section: Introductionmentioning

confidence: 99%

“… 4 Moreover, the product selectivity can be further improved by using a catalyst in the thermal cracking process. 5 …”

Section: Introductionmentioning

confidence: 99%

Preparation of sodium silicate/red mud-based ZSM-5 with glucose as a second template for catalytic cracking of waste plastics into useful chemicals

Ali

et al. 2022

RSC Adv.

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Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic

Cited by 15 publications

References 45 publications

Latest Trends in Pyrolysis Gas Chromatography for Analytical and Applied Pyrolysis of Plastics

Latest Trends in Pyrolysis Gas Chromatography for Analytical and Applied Pyrolysis of Plastics

Studies on Recycling Silane Controllable Recovered Carbon Fiber from Waste CFRP

Preparation of sodium silicate/red mud-based ZSM-5 with glucose as a second template for catalytic cracking of waste plastics into useful chemicals

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