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Co–Ru/SiC impregnated with ethanol as an effective catalyst for the Fischer–Tropsch synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
41023 45875 2012 10 PDF Available
Title
Co–Ru/SiC impregnated with ethanol as an effective catalyst for the Fischer–Tropsch synthesis
Abstract

Silicon carbide containing cobalt (30 wt.%) doped with 0.1 wt.% of ruthenium catalysts prepared by incipient wetness impregnation of cobalt nitrate with either ethanol or water were tested in the Fischer–Tropsch synthesis (FTS) in a fixed-bed configuration. The catalyst prepared with ethanol exhibits a higher FTS performance compared to the one prepared with water and especially at high reaction temperature, i.e. 230 °C. The FTS performance of the cobalt-based catalyst impregnated with ethanol further increases, under high temperature and high space velocity, to reach a steady state reaction rate of 0.54 gCH2 gcatalyst−1 h−10.54 gCH2 gcatalyst−1 h−1, and a relatively high C5+ selectivity of about 90%. In addition, the catalyst also exhibits a relatively high stability as a function of time on stream. 59Co zero field NMR analysis has indicates that the proportion of cobalt atoms engaged in the small hcp cobalt particles (<8 nm) was higher for the ethanol impregnated catalyst and also to the more homogeneous dispersion of the ruthenium atoms within the cobalt network forming an alloy.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (159 K)Download as PowerPoint slideHighlights► Influence of ethanol as an impregnation solvent for cobalt catalyst. ► Ethanol-based catalyst exhibits high activity under severe reaction conditions. ► Characterization of the Co phases by 59Co NMR. ► Higher activity is attributed to the presence of small hcp Co particles.

Keywords
Silicon carbide; Cobalt; Ruthenium; Fischer–Tropsch synthesis; Ethanol; 59Co NMR; Stacking faults
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Co–Ru/SiC impregnated with ethanol as an effective catalyst for the Fischer–Tropsch synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 419–420, 29 March 2012, Pages 31–40
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
Online Support
Any Questions? feel free to contact us