Aqueous-phase catalytic hydrogenation and hydrogenolysis reactions of sulfur- and nitrogen-containing compounds in oil fractions
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Journal
Article
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Author
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Daniel
E. Páez
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Author
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Antida
Andriollo
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Publication
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Catalysis
Today
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Abstract
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Reviews
research related to the hydrogenation and hydrogenolysis of
nitrogen-containing and sulfur-containing heterocyclic aromatic organic
compounds found in most oil fractions used to formulate fuels.
Researchers investigated thiophenes, benzothiophenes and quinoline as main components of heteroatom like S and N in fuels. Studies involved the use of organometallic species or compounds of ruthenium, rhodium and tungsten that are able to convert N and S aromatics in a two-phase immiscible medium, as it is the case for water or methanol and naphtha coming from Fluid Catalytic Cracking processes (FCC). Ruthenium species and compounds promoted hydrogenation of heteroaromatic rings in naphtha while rhodium complexes promoted hydrogenolysis. A tungsten hydrosoluble complex exhibited both hydrogenation and hydrogenolysis in an aqueous/organic medium, depending upon reaction conditions. |
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