Journal
APPLIED CATALYSIS A-GENERAL
Volume 353, Issue 1, Pages 46-53Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2008.10.022
Keywords
Hydrodeoxygenation; NiMoP/Al2O3; Benzofuran; 2,3-Dihydrobenzofuran; 2-Ethylphenol; H2S
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The transformation of benzofuran, 2,3-dihydrobenzofuran and 2-ethylphenol, as well as the competitive effect between furanic compounds (benzofuran and 2,3-dihydrobenzofuran) and a phenolic compound (2-propylphenol) over a sulfided NiMoP/Al2O3 Catalyst were studied under a total pressure of 7 MPa at 340 degrees C in a fixed bed reactor. The transformation of each oxygenated compounds was carried out with or without H2S (from dimethyldisulfide). Ethylcyclohexane was already the main deoxygenated product which was obtained by hydrogenation of aromatic ring followed by dehydratation and hydrogenation reactions (HYD pathway). The formation of ethylbenzene by a direct deoxygenation (DDO) pathway was in all cases very limited. Other oxygenated products were obtained by disproportionation and isomerization reactions. A global reaction scheme of the benzofuran transformation over a NiMoP/Al2O3 sulfided catalyst was established. In addition, the inhibiting effect of benzofuran and/or 2,3-dihydrobenzofuran on the transformation of 2-ethylphenol was demonstrated. Moreover, a promoting effect of H2S on the deoxygenating rate of all oxygenated compounds was observed. (C) 2008 Elsevier B.V. All rights reserved.
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