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Upgrading of bio-liquids on different mesoporous silica-supported CoMo catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
47523 46474 2009 14 PDF Available
Title
Upgrading of bio-liquids on different mesoporous silica-supported CoMo catalysts
Abstract

Bio-liquids upgrading via catalytic hydrotreating represents an alternative route to produce liquid hydrocarbon fuels. In this paper, the upgrading of an olive oil production-derived by-product has been conducted in a down-flow fixed-bed reactor at 250 °C, 3 MPa with sulfided CoMo catalysts. The catalysts were prepared by successive impregnation (with Mo being introduced first) and supported on different mesoporous silicates (DMS-1, SBA-15, SBA-16, HMS) with the aim to study the effect of support morphology on the catalytic response of sulfided CoMo catalysts. The supports and/or calcined catalysts were characterized by N2 adsorption–desorption isotherms, XRD, TPR and TPD-NH3 techniques. In addition, spent catalysts were studied by XPS, HRTEM and TPO/TG techniques. All sulfide CoMo catalysts were stable for 5 h of time-on-stream (TOS) reaction and recorded higher activity than a commercial sulfide NiMo/Al2O3 catalyst. The catalysts supported on the SBA-15, SBA-16 and DMS-1 materials were much more effective for oxygen removal than the HMS-supported one. The enhancement of activity was explained in terms of higher active phase exposure and increased acidity. It was found that support morphology affected the distribution of useful products. Considering the balance of desirable and undesirable products, the CoMo/SBA-16 catalyst had an optimal performance.

Keywords
Supported CoMo catalyst; Hydrodeoxygenation; Bio-liquids; Mesoporous silicates
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Upgrading of bio-liquids on different mesoporous silica-supported CoMo catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 92, Issues 1–2, 19 October 2009, Pages 154–167
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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