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

Descriptions

Other title
Subject/Keyword
Iron sulfide catalyst
Addition reaction supression
Asphaltene model compound
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Karbalaee Habib,Farhood
Supervisor and department
Semagina, Natalia (Chemical and Material Engineering)
Gray, Murray (Chemical and Material Engineering)
Examining committee member and department
Prasad, Vinay (Chemical and Material Engineering)
Semagina, Natalia (Chemical and Material Engineering)
Chung, Hyun-Joong (Chemical and Material Engineering)
Gray, Murray (Chemical and Material Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-09-11T14:05:30Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
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.
Language
English
DOI
doi:10.7939/R3BR8MQ5V
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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