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SBA-15 type materials as support of catalysts based on ruthenium sulfide for sulfur removal

Paper ID Volume ID Publish Year Pages File Format Full-Text
47302 46466 2010 12 PDF Available
Title
SBA-15 type materials as support of catalysts based on ruthenium sulfide for sulfur removal
Abstract

In the hydrodesulfuration (HDS) of dibenzothiophene (DBT) performed on catalysts derived from SBA-15-supported ruthenium sulfide systems, the roles of the support and the sulfiding temperature were studied. In this sense, three ruthenium sulfided catalysts supported on SBA-15 type materials have been prepared. The three employed supports were: a pure mesoporous silica SBA-15 (Si-SBA), that doped with zirconium (Zr-SBA) and that doped with aluminium (Al-SBA). The supports, precursor, sulfided and spent catalysts were characterized by X-ray diffraction (XRD), N2 adsorption–desorption isotherms at −196 °C, NH3-TPD, XPS analysis and H2-TPRS. The catalytic properties of these materials in the hydrodesulfurization (HDS) of dibenzotiophene (DBT) were tested between 260 and 360 °C under a hydrogen pressure of 3.0 MPa. The catalytic activity increased when catalysts were sulfided at 500 °C because of the formation of a greater amount of RuS2 having pyrite structure. Moreover, catalysts supported on Si-SBA and Zr-SBA turned out to be more active than that supported on Al-SBA due to a higher dispersion of the active phase, with conversions close to 100% at a reaction temperature of 360 °C.

Keywords
Mesoporous SBA-15; Ruthenium sulphide; Dibenzothiophene; HDS
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SBA-15 type materials as support of catalysts based on ruthenium sulfide for sulfur removal
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 97, Issues 1–2, 9 June 2010, Pages 257–268
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