1. Home
    2. Journals
    3. Bulletin of Materials Science
    4. Volume 36
    5. Issue 2

    • Pyrolysis of petroleum asphaltenes from different geological origins and use of methylnaphthalenes and methylphenanthrenes as maturity indicators for asphaltenes

      Manoj Kumar Sarmah Arun Borthakur Aradhana Dutta

      Volume 36 Issue 2 April 2013 pp 311-317

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/036/02/0311-0317

    • Keywords

       

      Maturity; methylnaphthalenes; methylphenanthrenes; asphaltenes; pyrolysate; kerogen.

    • Abstract

       

      Asphaltenes separated from two different crude oils from upper Assam, India, having different geological origins, viz. DK(eocene) and JN (oligocene–miocene) were pyrolysed at 600 °C and the products were analysed by gas chromatography–mass spectrometry (GC/MS) especially for the generated alkylnaphthalenes and alkylphenanthrenes. Both the asphaltenes produce aliphatic as well as aromatic compound classes. Alkylnaphthalenes and alkylphenanthrenes were identified by using reference chromatograms and literature data and the distributions used to assess thermalmaturity of the asphaltenes. The ratios of 𝛽-substituted to 𝛼-substituted isomers of both alkylnaphthalenes and alkylphenanthrenes revealed higher maturity of the JN asphaltenes than the DK asphaltenes. For both the asphaltenes, the abundance of 1-methylphenanthrene dominates over that of 9-methylphenanthrene showing the terrestrial nature of the organic matter.

    • Author Affiliations

       

      Manoj Kumar Sarmah1 Arun Borthakur2 Aradhana Dutta3

      1. Oil India Limited, P.O. Duliajan, Dist. Dibrugarh 786 602, India
      2. North East Institute of Science and Technology, P.O. Jorhat 786 001, India
      3. Dibrugarh University, P.O. Dibrugarh 786 002, India

    • Dates

       
      Published
      April 2013
      Manuscript received
      10 February 2009
      Manuscript revised
      7 September 2012

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.

Contact | Site index