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Carbon support treatment effect on Ru/C catalyst performance for benzene partial hydrogenation

Paper ID Volume ID Publish Year Pages File Format Full-Text
41073 45876 2011 7 PDF Available
Title
Carbon support treatment effect on Ru/C catalyst performance for benzene partial hydrogenation
Abstract

Ru/C catalysts were prepared from commercial activated carbon submitted to different treatments. The catalysts were prepared by incipient wetness impregnation, through an aqueous solution of the precursor RuCl3·xH2O. After impregnation, some catalysts were submitted to direct reduction treatment under H2 flow at the temperature of 150 °C, in order to evaluate the effects of activation. The supports were characterized by N2 adsorption, Boehm and potentiometric titration. The X-ray photoelectron spectroscopy was used to study the supports and catalysts surfaces, while scanning electron microscopy allowed us to determine the chemical composition and observe the catalysts morphology. Ru/C catalysts performance was evaluated within the hydrogenation reaction of benzene in liquid phase, using a Parr reactor. The reaction was conducted under total pressure of 5.0 MPa of H2, at a temperature of 100 °C with water in the reaction medium. The obtained results indicate that the Ru/C system catalytic performance is influenced for determined functional groups present on the activated carbon surface. The carbonyl groups decrease the activity and selectivity of the reactions, while an increase of the carboxylic groups leads to more active catalysts and the highest yield of cyclohexene.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (173 K)Download as PowerPoint slideHighlights► Commercial activated carbon submitted to different treatments. ► Catalytic performance of the system Ru/C is influenced for functional groups. ► Carbonyl groups decrease the activity and selectivity of the reaction. ► Carboxylic groups leads active catalysts and the highest yield of cyclohexene.

Keywords
Hydrogenation; Benzene; Ruthenium; Activated carbon; Cyclohexene
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Carbon support treatment effect on Ru/C catalyst performance for benzene partial hydrogenation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 409–410, 15 December 2011, Pages 174–180
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