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Permanent link (DOI): https://doi.org/10.7939/R36W96J17

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Bimetallic catalysts for low-pressure ring opening Open Access

Descriptions

Other title
Subject/Keyword
bimetallic catalysts
ring opening
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Shen, Jing
Supervisor and department
Semagina, Natalia (Chemical Engineering)
Examining committee member and department
Prasad, Vinay (Chemical Engineering)
Semagina, Natalia (Chemical Engineering)
Stryker, Jeffrey (Chemistry)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2012-05-31T15:34:29Z
Graduation date
2011-06
Degree
Master of Science
Degree level
Master's
Abstract
Selective ring opening of naphthenic molecules is a preferred reaction to increase cetane number of fuels, and it should result in products with no loss in molecular weight and longer alkyl side chains. Benzocyclopentane (indan) ring opening was studied under hydrogen atmospheric pressure at 609 K with a variety of poly-(vinylpyrrolidone)-stabilized Pd, Ir, and Ru mono- and bimetallic nanocatalysts. The bimetallic catalysts were synthesized either via simultaneous reduction or via hydrogen-sacrificial technology, providing presumably alloy or core-shell structures, respectively. Pd catalysts displayed the lowest activity; Ru showed the highest formation of o-xylene. Monometallic Ir (sphere 1.6 nm) and bimetallic Pd-Ir catalyst (2.7 nm) with presumable core-shell structure showed superior activity and selectivity to desired 2-ethyltoluene and n-propylbenzene, as well as lower cracking as compared to industrial Pt-Ir catalyst.
Language
English
DOI
doi:10.7939/R36W96J17
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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