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Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes

[Image: see text] Thiophenes are the simplest aromatic sulfur-containing compounds and are stable and widespread in fossil fuels. Regulation of sulfur levels in fuels and emissions has become and continues to be ever more stringent as part of governments’ efforts to address negative environmental im...

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Autores principales: George, Graham N., Hackett, Mark J., Sansone, Michael, Gorbaty, Martin L., Kelemen, Simon R., Prince, Roger C., Harris, Hugh H., Pickering, Ingrid J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2014
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4161161/
https://www.ncbi.nlm.nih.gov/pubmed/25116792
http://dx.doi.org/10.1021/jp505766f
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author George, Graham N.
Hackett, Mark J.
Sansone, Michael
Gorbaty, Martin L.
Kelemen, Simon R.
Prince, Roger C.
Harris, Hugh H.
Pickering, Ingrid J.
author_facet George, Graham N.
Hackett, Mark J.
Sansone, Michael
Gorbaty, Martin L.
Kelemen, Simon R.
Prince, Roger C.
Harris, Hugh H.
Pickering, Ingrid J.
author_sort George, Graham N.
collection PubMed
description [Image: see text] Thiophenes are the simplest aromatic sulfur-containing compounds and are stable and widespread in fossil fuels. Regulation of sulfur levels in fuels and emissions has become and continues to be ever more stringent as part of governments’ efforts to address negative environmental impacts of sulfur dioxide. In turn, more effective removal methods are continually being sought. In a chemical sense, thiophenes are somewhat obdurate and hence their removal from fossil fuels poses problems for the industrial chemist. Sulfur K-edge X-ray absorption spectroscopy provides key information on thiophenic components in fuels. Here we present a systematic study of the spectroscopic sensitivity to chemical modifications of the thiophene system. We conclude that while the utility of sulfur K-edge X-ray absorption spectra in understanding the chemical composition of sulfur-containing fossil fuels has already been demonstrated, care must be exercised in interpreting these spectra because the assumption of an invariant spectrum for thiophenic forms may not always be valid.
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spelling pubmed-41611612015-08-12 Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes George, Graham N. Hackett, Mark J. Sansone, Michael Gorbaty, Martin L. Kelemen, Simon R. Prince, Roger C. Harris, Hugh H. Pickering, Ingrid J. J Phys Chem A [Image: see text] Thiophenes are the simplest aromatic sulfur-containing compounds and are stable and widespread in fossil fuels. Regulation of sulfur levels in fuels and emissions has become and continues to be ever more stringent as part of governments’ efforts to address negative environmental impacts of sulfur dioxide. In turn, more effective removal methods are continually being sought. In a chemical sense, thiophenes are somewhat obdurate and hence their removal from fossil fuels poses problems for the industrial chemist. Sulfur K-edge X-ray absorption spectroscopy provides key information on thiophenic components in fuels. Here we present a systematic study of the spectroscopic sensitivity to chemical modifications of the thiophene system. We conclude that while the utility of sulfur K-edge X-ray absorption spectra in understanding the chemical composition of sulfur-containing fossil fuels has already been demonstrated, care must be exercised in interpreting these spectra because the assumption of an invariant spectrum for thiophenic forms may not always be valid. American Chemical Society 2014-08-12 2014-09-11 /pmc/articles/PMC4161161/ /pubmed/25116792 http://dx.doi.org/10.1021/jp505766f Text en Copyright © 2014 American Chemical Society Terms of Use (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html)
spellingShingle George, Graham N.
Hackett, Mark J.
Sansone, Michael
Gorbaty, Martin L.
Kelemen, Simon R.
Prince, Roger C.
Harris, Hugh H.
Pickering, Ingrid J.
Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title_full Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title_fullStr Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title_full_unstemmed Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title_short Long-Range Chemical Sensitivity in the Sulfur K-Edge X-ray Absorption Spectra of Substituted Thiophenes
title_sort long-range chemical sensitivity in the sulfur k-edge x-ray absorption spectra of substituted thiophenes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4161161/
https://www.ncbi.nlm.nih.gov/pubmed/25116792
http://dx.doi.org/10.1021/jp505766f
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