Physical characterization of pyrolyzed tobacco and tobacco components

Baliga, Vicki L; Sharma, Ramesh K.; Miser, Donald E.; McGrath, Thomas E.; Hajaligol, Mohammad R.

doi:10.1016/s0165-2370(02)00114-6

Cited by 46 publications

(37 citation statements)

References 25 publications

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“…One of the main components of biomass, lignin, is an amorphous, three dimensional branched polyphenolic polymer, being synthesized via dehydrogenative polymerization of the three key cinnamyl alcohol-based monomers: p -coumaryl alcohol, coniferyl alcohol and sinapyl alcohol [1,4,5]. The pyrolysis of lignin coupled with various analytical and spectroscopic methods have been used over decades to get insight into the mechanism of its thermal decomposition [2,6–9].…”

Section: Introductionmentioning

confidence: 99%

Radicals and molecular products from the gas-phase pyrolysis of lignin model compounds. Cinnamyl alcohol

Khachatryan

et al. 2016

Journal of Analytical and Applied Pyrolysis

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The experimental results on detection and identification of intermediate radicals and molecular products from gas-phase pyrolysis of cinnamyl alcohol (CnA), the simplest non-phenolic lignin model compound, over the temperature range of 400–800 °C are reported. The low temperature matrix isolation – electron paramagnetic resonance (LTMI-EPR) experiments along with the theoretical calculations, provided evidences on the generation of the intermediate carbon and oxygen centered as well as oxygen-linked, conjugated radicals. A mechanistic analysis is performed based on density functional theory to explain formation of the major products from CnA pyrolysis; cinnamaldehyde, indene, styrene, benzaldehyde, 1-propynyl benzene, and 2-propenyl benzene. The evaluated bond dissociation patterns and unimolecular decomposition pathways involve dehydrogenation, dehydration, 1,3-sigmatropic H-migration, 1,2-hydrogen shift, C—O and C—C bond cleavage processes.

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Section: Introductionmentioning

confidence: 99%

Radicals and molecular products from the gas-phase pyrolysis of lignin model compounds. Cinnamyl alcohol

Khachatryan

et al. 2016

Journal of Analytical and Applied Pyrolysis

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“…There were two peaks in the DTG curve at this stage; the temperature for the first peak was 189ºC, while the maximum weight loss rate occurred at the second peak at 323ºC. According to Baliga et al (2003), pectin showed initial melting as early as 150ºC and a total melt by 250ºC. Meanwhile, hemicellulose started to decompose at a temperature near 450 K (Navarro et al 2009).…”

Section: Fig 1 Tg and Dtg Curves Of Tobacco Stemmentioning

confidence: 98%

Pyrolysis Characteristic of Tobacco Stem Studied by Py-GC/MS, TG-FTIR, and TG-MS

Liu¹,

Li²,

Wu³

et al. 2012

BioResources

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Pyrolysis characteristics and mechanism of tobacco stem were studied by pyrolysis coupled with gas chromatography/mass spectrometry (Py-GC/MS), thermogravimetric analyzer coupled with Fourier transform infrared spectrometry, and mass spectrometry (TG-FTIR and TG-MS) techniques. The composition of evolved volatiles from fast pyrolysis of tobacco stem was determined by Py-GC/MS analysis, and the evolution patterns of the major products were investigated by TG-FTIR and TG-MS. Py-GC/MS data indicated that furfural and phenol were the major products in low temperature pyrolysis, and these were generated from depolymerization of cellulose. Indene and naphthalene were the major products in high temperature pyrolysis. TG-FTIR and TG-MS results showed that CO, CO 2 , phenols, aldehydes, and ketones were released between 167ºC and 500ºC; at temperatures >500ºC, CO and CO 2 were the main gaseous products.

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“…It can be attributed to both significant weight loss (increase in concentration) owing to heating (Baliga et al 2004) and creation of new strongly magnetic minerals during burning. The magnetic enhancement of cigarette ashes (A1-A5) in respect to un-burnt tobacco samples (U1-U5) is also confirmed by the present magnetic measurements.…”

Section: Magnetic Measurementsmentioning

confidence: 99%

Magnetic particulate matters in the ashes of few commonly used Indian cigarettes

Bhattacharjee

Mandal

Roy

et al. 2014

Environ Monit Assess

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Physical aspects of tobacco samples, used in some commonly available Indian brands of cigarettes, with emphasis on their magnetic characterization before and after they get burnt into ashes, are described. The present work highlights the ultrafine nature of the cigarette ashes and provides a compositional insight of their constituent particulate matters as revealed by the XRD and SEM studies. Based on the EDX spectra, elemental distributions of different tobacco samples, before and after they get burnt, are presented. In this work, magnetic measurements of the un-burnt tobacco samples are reported. An attempt is made to shed light on the origin of magnetism observed in these samples.

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Physical characterization of pyrolyzed tobacco and tobacco components

Cited by 46 publications

References 25 publications

Radicals and molecular products from the gas-phase pyrolysis of lignin model compounds. Cinnamyl alcohol

Radicals and molecular products from the gas-phase pyrolysis of lignin model compounds. Cinnamyl alcohol

Pyrolysis Characteristic of Tobacco Stem Studied by Py-GC/MS, TG-FTIR, and TG-MS

Magnetic particulate matters in the ashes of few commonly used Indian cigarettes

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