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Influence of the operating conditions and kinetic analysis of the selective hydrogenation of oleic acid on Ru–Sn–B/Al2O3 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
40091 45843 2013 7 PDF Available
Title
Influence of the operating conditions and kinetic analysis of the selective hydrogenation of oleic acid on Ru–Sn–B/Al2O3 catalysts
Abstract

•We studied reaction conditions for oleic acid selective hydrogenation on Ru–Sn–B/Al2O3.•Catalytic properties of Ru are modified by the strong interaction between Sn and B.•Ru–Sn–B/Al2O3 is selective to oleyl alcohol while Ru or Ru–B/Al2O3 catalysts are not.•Temperature/pressure increments increase activity while selectivity goes through a maximum.•A simple first order kinetic model is useful to compare catalyst performance.

The influence of the operating conditions on the selectivity and activity of Ru–Sn–B/Al2O3 catalysts for the hydrogenation of oleic acid to oleyl alcohol was studied. It was found that the Ru–Sn–B/Al2O3 catalyst is selective to oleyl alcohol while Ru or Ru–B/Al2O3 catalysts are not selective to produce oleyl alcohol. The electronic and catalytic properties of Ru are modified by the strong interaction between Sn and B. The incorporation of Sn leads to catalysts capable of producing oleyl alcohol.The experiments of oleic acid hydrogenation showed that an increase in reaction temperature leads to an increase in activity while the selectivity to oleyl alcohol goes through a maximum. This is because the reactions of hydrogenation of CC double bond have lower activation energies than hydrogenolytic reactions. The increase in operating pressure has a positive effect on conversion and a more important effect on selectivity. A very simple first order kinetic model is proposed and reasonably represents the results obtained. This model can be useful to compare catalyst performance more rationally.

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Keywords
Ru–Sn–B/Al2O3; Selective hydrogenation; Oleic acid; Oleyl alcohol
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Influence of the operating conditions and kinetic analysis of the selective hydrogenation of oleic acid on Ru–Sn–B/Al2O3 catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 467, 2 October 2013, Pages 552–558
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us