Thermal reactions between alkanes and H2S or thiols at high pressure

► Confined pyrolysis in gold cells of n-octane/H2S mixture is investigated at high pressure. ► The main products are thiophene, alkylthiophenes, octanethiols and alkyl-thiacycloalkanes. ► Reactivity of thiol is also studied at 350°C in pyrolysis of n-octane/thiol mixtures. ► The formation pathways o...

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Bibliographic Details
Published in:Journal of analytical and applied pyrolysis 2013-09, Vol.103, p.307-319
Main Authors: Nguyen, V.P., Burklé-Vitzthum, V., Marquaire, P.M., Michels, R.
Format: Article
Language:English
Subjects:
Alkanes
Chemical and Process Engineering
Earth Sciences
Engineering Sciences
Environmental Sciences
Geochemistry
Global Changes
gold
H2S
High pressure
hydrogen sulfide
n-Octane
Organic sulfur compounds
Pyrolysis
Sciences of the Universe
Thiols
thiophene
Thiophenes
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Summary:► Confined pyrolysis in gold cells of n-octane/H2S mixture is investigated at high pressure. ► The main products are thiophene, alkylthiophenes, octanethiols and alkyl-thiacycloalkanes. ► Reactivity of thiol is also studied at 350°C in pyrolysis of n-octane/thiol mixtures. ► The formation pathways of the main products, which are similar for both reactant mixtures, are proposed. Confined pyrolysis in gold cells of n-octane/H2S mixtures was carried out between 310°C and 350°C under 700bar for durations of 3–13 days. The main products were thiophene, alkylthiophenes, octanethiols and alkyl-thiacycloalkanes and their quantities were measured. Some experiments were also carried out at 350°C on n-octane/thiol mixtures and the results were compared to those obtained with H2S. The formation pathways of the main products, which are similar for both reactant mixtures, are proposed.
ISSN:0165-2370
1873-250X
DOI:10.1016/j.jaap.2012.11.018