The effect of different pyrolysis temperatures on organic microfossils, vitrain and amber—A comparative study between laser assisted- and Curie Point-pyrolysis–gas chromatography/mass spectrometry

Sandouk-Lincke, Nadia Anna al; Schwarzbauer, Jan; Hartkopf‐Fröder, Christoph; Volk, Herbert; Fuentes, David; Young, Martin D.; Littke, Ralf

doi:10.1016/j.jaap.2014.03.004

Cited by 24 publications

(27 citation statements)

References 42 publications

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“…and Prati et al . for examining organic fossil and paint cross sections respectively . Thomsen et al .…”

Section: Pyrolysis Reactors: Identifying the Most Suitable Technologymentioning

confidence: 99%

“…140 A Nd:YAG laser source was used by al Sandouk-Lincke et al and Prati et al for examining organic fossil and paint cross sections respectively. 141,142 Thomsen et al performed pressurized laser pyrolysis of coal using blue-green emission from argon ion laser. 143 Thus, by dint of visual observation and selective heating it is possible to obtain in situ molecular compositions, unlike with bulk pyrolysis methods.…”

Section: Laser Pyrolyzersmentioning

confidence: 99%

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Cellulose fast pyrolysis for platform chemicals: assessment of potential targets and suitable reactor technology

Parihar

Bhattacharya

2019

Biofuels Bioprod Bioref

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The cellulosic component of lignocellulosic biomass can be converted to commercially valuable platform chemicals through pyrolysis provided it is effectively controlled and optimized. This review first discusses the underpinning kinetics and mechanism of cellulose pyrolysis to identify target platform chemicals. Platform chemicals like 5‐hydroxymethyl furfural, 5‐chloromethyl furfural, and levoglucosenone, which are potentially amenable to the pyrolytic conversion of cellulose, are then elucidated. There are laboratory and large‐scale reactor technologies available for converting biomass to bio‐oil but they have not been comprehensively investigated for producing platform chemicals through pyrolysis. This review critically evaluates different reactor types available for developing the catalytic pyrolysis process for converting cellulosic component of biomass to platform chemicals. The fluidized bed reactor stands out as the most suitable reactor technology for the catalytic pyrolysis of cellulose to platform chemicals owing to attributes like short residence time, high heating rate, uniform mixing, efficient heat transfer, and scalability of operations. This article provides perspective on the implementation of this technology for the pyrolysis of the cellulosic component of biomass to platform chemicals. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…and Prati et al . for examining organic fossil and paint cross sections respectively . Thomsen et al .…”

Section: Pyrolysis Reactors: Identifying the Most Suitable Technologymentioning

confidence: 99%

Section: Laser Pyrolyzersmentioning

confidence: 99%

Cellulose fast pyrolysis for platform chemicals: assessment of potential targets and suitable reactor technology

Parihar

Bhattacharya

2019

Biofuels Bioprod Bioref

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“…Homologous series of n-alkenes and n-alkanes are frequently seen from the pyrolysis of organic matter [33,24,2], deriving from the pyrolysis breakdown of larger biopolymers. Their dominance in a pyrogram has previously been associated with humic acids [24], although it has also been suggested that this dominance is a result of an inherent analytical bias in favour of non-polar compounds [33].…”

Section: N-alkenes and N-alkanesmentioning

confidence: 99%

“…alkane chain length) have been shown to have a relationship with pyrolysis temperature [2]. Although laser pyrolysis temperatures will be uniformly high, they are not controlled as exactly as in other pyrolysis techniques, which means the precise range of pyrolysis temperatures applied here cannot be quantified.…”

Section: Future Research Directionsmentioning

confidence: 99%

“…Outside of geology, LaPy-GC-MS has also found use in forensic studies such as analysis of paint flakes [3,39]. A recent study comparing La-Py-GC-MS to Curie point pyrolysis GC-MS (CP-Py-GC-MS) concluded that there were several advantages pertaining to the use of laser pyrolysis, including the provision for smaller sample sizes and good spatial analytical control [2], but that the higher (estimated as >1000 • C) and unquantified temperature applied in laser pyrolysis will affect compound distributions. They therefore concluded that the nature of the organic matter was important in assessing the suitability of pyrolysis techniques, with more mature organic matter better suited to laser work [2].…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of organic inclusions in stalagmites using laser-ablation-micropyrolysis gas chromatography–mass spectrometry

Blyth

Fuentes

George

et al. 2015

Journal of Analytical and Applied Pyrolysis

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a b s t r a c tLaser-micropyrolysis gas chromatography-mass spectrometry (La-Py-GC-MS) allows the analysis of small targeted areas of organic material. In this proof of concept study a novel application of the technique is demonstrated. Three types of organic matter preserved in speleothems were analysed: dissolved organic matter within the calcite crystal matrix; detrital organic inclusions; and lithified guano derived from birds and bats. The results indicate that there is significant heterogeneity within each sample type, with guano samples having the highest variability. However, there are also distinctive La-Py-GC-MS products that allow separation of the sample types geochemically. These include the chain length distribution within the longer chain n-alkanes (>C 20 ), with the guano sample having a dominance of chain lengths below C 27 , whilst the other two sample types are dominated by n-alkanes of C 27 and above. The detrital inclusion sample has a higher relative abundance of pyrrole and methylpyrroles. A homologous series of longer chain alkylbenzenes is seen only in the guano samples.Our preliminary data indicate that fingerprints of La-Py-GC-MS analyses may be useful to provide information on organic matter preserved in speleothems, but more work is required to extend the technique to lower organic content samples, and to fully test the application in a larger dataset of preserved organic matter types.

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Organic geochemical and compound specific stable carbon isotope analyses of n-alkanes and saturated carboxylic acids extracted from late Paleozoic coals

Weniger,

Schwarzbauer

2024

Int J Earth Sci (Geol Rundsch)

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Isotopic studies of coal organic matter are often conducted to gain information about past ecosystems and plant communities e.g. under changing climate conditions. While many studies focused on isotope analysis of bulk coal organic matter or extractable aliphatic hydrocarbons, the polar fraction and compounds that are bound to kerogen and not freely extractable have received less attention. The aim of this study was to provide a systematic comparison and evaluation of information gained from different molecular compounds (n-alkanes, n-carboxylic acids) extracted from Paleozoic coals before and after alkaline hydrolysis. Stable carbon isotope analysis of these compounds were used to evaluate a possible application of extractable and ‘bound’ lipids for paleoenvironmental analyses. Coal samples of different stratigraphic age, low thermal maturity (VRr < 1.02%, mostly VRr < 0.8%) and from different paleogeographic locations were selected to investigate organic matter deposited under different paleoenvironmental and paleoclimatic conditions. Molecular distributions show prominent carbon preference suggesting preservation of biologic signatures in coal organic matter. Permian Gondwana coals show similar n-alkane and n-carboxylic acid distribution which may be related to Glossopteris flora. Molecular distributions of Carboniferous coal from Europe are more variable with unimodal or bimodal patterns and maxima in the short- or long-chain range, reflecting higher diversity of paleovegetation and different contribution from algae or bacteria in limnic and paralic environments. The isotope signals of free as well as bound fatty acids show closer response for different depositional environments, whereas signals of paraffins and bulk organic matter are less variable. However, averaged fatty acid isotope signals in coals from different paleovegetational realms, e.g. Euramerica and Gondwana differed only marginally. Graphical abstract

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The effect of different pyrolysis temperatures on organic microfossils, vitrain and amber—A comparative study between laser assisted- and Curie Point-pyrolysis–gas chromatography/mass spectrometry

Cited by 24 publications

References 42 publications

Cellulose fast pyrolysis for platform chemicals: assessment of potential targets and suitable reactor technology

Cellulose fast pyrolysis for platform chemicals: assessment of potential targets and suitable reactor technology

Characterisation of organic inclusions in stalagmites using laser-ablation-micropyrolysis gas chromatography–mass spectrometry

Organic geochemical and compound specific stable carbon isotope analyses of n-alkanes and saturated carboxylic acids extracted from late Paleozoic coals

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