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Suppression of addition reactions of asphaltene model compound during hydrogenation with sulfided iron catalyst

  • Author / Creator
    Karbalaee Habib,Farhood
  • A model compound is used to probe the chemical and physical behaviors of asphaltene. Hydrogenation reactions were conducted in a batch microreactor at 430℃, 13.9 MPa H2 for 30 min using a solution of 1,3,6,8-tetrahexylpyrene in tetralin. Sulfided iron was prepared on α-alumina, γ-alumina and glass beads as support materials. The hypothesis of this study was that addition reactions can be suppressed under hydrogenation conditions by using sulfided iron as a low active catalyst by saturating olefin intermediates. The products were analyzed by high performance liquid chromatography, gas chromatography and matrix assisted laser desorption ionization mass spectrometry to investigate conversion and product distribution for different catalysts. The results show that catalyst can give significant suppression of addition reactions from 63 mol % for non-catalytic to 13 mol % for sulfided Fe/α-Al2O3 and shift the selectivity toward cracking, without giving a high level of hydrogenation of the aromatics.

  • Subjects / Keywords
  • Graduation date
    2013-11
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3BR8MQ5V
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Department of Chemical and Materials Engineering
  • Specialization
    • Chemical Engineering
  • Supervisor / co-supervisor and their department(s)
    • Gray, Murray (Chemical and Material Engineering)
    • Semagina, Natalia (Chemical and Material Engineering)
  • Examining committee members and their departments
    • Chung, Hyun-Joong (Chemical and Material Engineering)
    • Semagina, Natalia (Chemical and Material Engineering)
    • Gray, Murray (Chemical and Material Engineering)
    • Prasad, Vinay (Chemical and Material Engineering)