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Effect of glycol on the formation of active species and sulfidation mechanism of CoMoP/Al2O3 hydrotreating catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
46722 46446 2011 9 PDF Available
Title
Effect of glycol on the formation of active species and sulfidation mechanism of CoMoP/Al2O3 hydrotreating catalysts
Abstract

The present work is focused on the role of an organic promoter (triethyleneglycol – TEG) on the activity of hydrotreating catalysts. By impregnating such compound on oxidic industrial catalyst, an enhancement of the catalytic activity in the HDS conversion of 4,6-DMDBT as well as SRGO HDS was obtained. Using several physico-chemical techniques and in situ characterization (Raman, XAS), it was found that TEG affected the coordination of Co and Mo in the oxidic species. During the activation procedure, the presence of TEG slows down the sulfidation and allows the genesis of more active “CoMoS” species.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights• Effect of triethyleneglycol (TEG) impregnated on oxidic catalysts on the HDS performance. • TEG enhanced the formation of heteropolyanion entities by redissolution/redispersion of the active species. • Effect of retardation of the additive on the sulfidation followed by Raman and XAS spectroscopy.

Keywords
Hydrotreating catalyst; Sulphidation; Additive; TEG; Raman spectroscopy; QEXAFS; 27Al NMR
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Effect of glycol on the formation of active species and sulfidation mechanism of CoMoP/Al2O3 hydrotreating catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 107, Issues 1–2, 31 August 2011, Pages 59–67
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