Application of high-resolution gas chromatography-mass spectrometry to the analysis of the pyrolysis products of isoprene

Oro, Juan R. de Xammar; Han, Jian; Zlatkis, A.

doi:10.1021/ac60245a035

Cited by 34 publications

(11 citation statements)

References 12 publications

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“…This has prompted a considerable number of researchers to carry out investigations into the pyrolysis of isoprene and its dimers. Oro, Han, and Zlatkis, for instance, pyrolyzed isoprene at temperatures of between 300 and 1000 °C. The influence of temperature on the composition of the reaction products is considerable.…”

Section: Introductionmentioning

confidence: 99%

Gas from the Pyrolysis of Scrap Tires in a Fluidized Bed Reactor

1996

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A fluidized sand bed reactor was used to study the production of gases from scrap tires at four nominal temperatures (ranging from 600 to 900 °C). Yields of 17 pyrolysis products (methane, ethane, ethylene, propane, propylene, acetylene, butane, butylene, 1,3-butadiene, pentane, benzene, toluene, xylenes + styrene, hydrogen, carbon monoxide, carbon dioxide, and hydrogen sulfide) were analyzed as a function of the operating conditions. The results are compared with the data obtained by pyrolysis of tires in a Pyroprobe 1000, where secondary tar cracking is small. Correlations between the products analyzed with those of methane are discussed.

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Section: Introductionmentioning

confidence: 99%

Gas from the Pyrolysis of Scrap Tires in a Fluidized Bed Reactor

1996

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“…Pyrolysis studies of isoprene which was carried out for temperature ranging from 673 to 1273 K resulted in the formation of 49 aromatic products with several PAHs. 20 Pyrolysis of isoprene at 973 K resulted in the formation of benzene, toluene and xylene as major products and accounted for 52% of the observed products. 21 Flash pyrolysis of isoprene resulted in the formation of linear molecules and benzene was observed after 1250 K. 22 On careful observation, a similar behaviour can also be observed in the pyrolysis of 3-carene.…”

Section: Experimental Observationmentioning

confidence: 99%

“…Pyrolysis studies on isoprene, C 5 H 8 , were carried out to understand the formation of Polycyclic Aromatic Hydrocarbons (PAH). 20,21 Recent isoprene pyrolysis studies showed that its decomposition could lead to the formation of C 1 to C 6 product molecules. 22 This manuscript reports the first detailed study on thermal decomposition of 3-carene, a complex bicyclic hydrocarbon.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of 3-carene: Experiment, Theory and Modeling

et al. 2015

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Thermal decomposition studies of 3-carene, a bio-fuel, have been carried out behind the reflected shock wave in a single pulse shock tube for temperature ranging from 920 K to 1220 K. The observed products in thermal decomposition of 3-carene are acetylene, allene, butadiene, isoprene, cyclopentadiene, hexatriene, benzene, toluene and p-xylene. The overall rate constant for 3-carene decomposition was found to be k/s −1 = 10 (9.95 ± 0.54) exp(−40.88 ± 2.71 kcal mol −1 /RT). Ab-initio theoretical calculations were carried out to find the minimum energy pathway that could explain the formation of the observed products in the thermal decomposition experiments. These calculations were carried out at B3LYP/6-311+G(d,p) and G3 level of theories. A kinetic mechanism explaining the observed products in the thermal decomposition experiments has been derived. It is concluded that the linear hydrocarbons are the primary products in the pyrolysis of 3-carene.

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“…Isolation by partition chromatography was used by the following: Davis (157,158) in the determination of amyl-p-dimethylaminobenzoate and other sunscreens in suntan preparations, Estep, et al (187) in the determination of alkylnaphthalene in coal tar neutral oil, Ibrahim and Cavagnol (SOI) who determined the insecticide, fenthion, Hancock et al ( 262) who determined diethylphthalate in perfumes, lacquers, paints, and varnishes, and Weber (645) in the separation and determination of salicylic acid and benzoic acid. Polycyclic aromatic hydrocarbons in foodstuffs were determined by Howard and coworkers (295,296), those in auto exhaust were determined by Hangebrauck, et al (263) and Oro, et al (475) identified polycyclic aromatic hydrocarbons in the pyrolysis products of isoprene after chromatographic separation. Campbell and Ide (107) give data for the determination of aromatic hydrocarbons collected from air on silica gel and discuss the particulate background problem.…”

Section: Organic Analysismentioning

confidence: 99%