Formation of Methoxybenzenes from Cellulose in the Presence of Tetramethylammonium Hydroxide by Pyrolysis

Choi, Sung‐Seen; Kim, Min‐Chul; Kim, Yun-Ki

doi:10.5012/bkcs.2013.34.2.649

Cited by 8 publications

(4 citation statements)

References 41 publications

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“…The latter include a methoxybenzene substituted by two methyl groups or an ethyl group 22 which originates from lignin or polysaccharides such as cellulose, depending on its substitution pattern (Seitz & Ram ; Choi et al . ). Despite these similarities, differences are observed, including the much weaker abundance of octadecanol 24 in the sediment pyrolysate.…”

Section: Discussionmentioning

confidence: 97%

Chemical preservation of tail feathers fromAnchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)

Cincotta

Colaux

et al. 2020

Palaeontology

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A panel of geochemical techniques is used here to investigate the taphonomy of fossil feathers preserved in association with the skeleton of the Jurassic theropod Anchiornis huxleyi. Extant feathers were analysed in parallel to test whether the soft tissues morphologically preserved in the fossil also exhibit a high degree of chemical preservation. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) indicate that clays and iron oxide pseudomorphs occur in the surrounding sediment and also reveal the preservation of melanosome‐like microbodies in the fossil. Carbon gradient along a depth profile and co‐occurrence of carbon and sulphur are shown in the fossil by elastic backscattering (EBS) and particle‐induced x‐ray emission (PIXE), which are promising techniques for the elemental analysis of fossil soft tissues. The molecular composition of modern and fossil soft tissues was assessed from micro‐attenuated total reflectance fourier transform infrared spectroscopy (micro‐ATR FTIR), solid‐state 13C nuclear magnetic resonance (CP‐MAS 13C NMR) and pyrolysis gas chromatography mass spectrometry in the presence of TMAH (TMAH‐Py‐GC‐MS). Results indicate that the proteinaceous material that comprises the modern feathers is not present in the fossil feathers. The fossil feathers and the embedding sediment exhibit a highly aliphatic character. However, substantial differences exist between these samples, revealing that the organic matter of the fossil feathers is, at least partially, derived from original constituents of the feathers. Our results suggest that, despite the morphological preservation of Anchiornis feathers, original proteins, that is keratin, were probably not preserved in the 160‐myr‐old feathers.

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Section: Discussionmentioning

confidence: 97%

Chemical preservation of tail feathers fromAnchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)

Cincotta

Colaux

et al. 2020

Palaeontology

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“…Furfural is one of key pyrolysis products formed from plant-related particles (PRPs) such as wood, bark, and leaves [ [51] , [52] , [53] ]. Wood particle was selected from the road dust collected at the bus stop, and it was pyrolyzed.…”

Section: Resultsmentioning

confidence: 99%

Comparison of polymeric components and tire wear particle contents in particulate matter collected at bus stop and college campus

Chae

Choi

2023

Heliyon

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“…The kinds of principal pyrolysis products of the two leaf samples were nearly the same, but the relative abundances were different from each other. One of the key pyrolysis products of PRCs is furfural produced from cellulose [ 45 , 46 ]. Furfural was abundantly observed in all the PRC samples.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Polymeric Components in Particulate Matter Using Pyrolysis-Gas Chromatography/Mass Spectrometry

Chae

Choi

2022

Polymers

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Particulate matters (PMs) such as PM10 and PM2.5 were collected at a bus stop and were analyzed using pyrolysis-gas chromatography/mass spectrometry to identify organic polymeric materials in them. The major pyrolysis products of the PM samples were isoprene, toluene, styrene, dipentene, and 1-alkenes. The pyrolysis products generated from the PM samples were identified using reference polymeric samples such as common rubbers (natural rubber, butadiene rubber, and styrene-butadiene rubber), common plastics (polyethylene, polypropylene, polystyrene, and poly(ethylene terephthalate)), plant-related components (bark, wood, and leaf), and bitumen. The major sources of the principal polymeric materials in the PM samples were found to be the abrasion of the tire tread and asphalt pavement, plant-related components, and lint from polyester fabric. The particles produced by the abrasion of the tire tread and asphalt pavement on the road were non-exhaustive sources, while the plant-related components and lint from polyester fabric were inflowed from the outside.

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Formation of Methoxybenzenes from Cellulose in the Presence of Tetramethylammonium Hydroxide by Pyrolysis

Cited by 8 publications

References 41 publications

Chemical preservation of tail feathers fromAnchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)

Chemical preservation of tail feathers fromAnchiornis huxleyi, a theropod dinosaur from the Tiaojishan Formation (Upper Jurassic, China)

Comparison of polymeric components and tire wear particle contents in particulate matter collected at bus stop and college campus

Analysis of Polymeric Components in Particulate Matter Using Pyrolysis-Gas Chromatography/Mass Spectrometry

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