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Sulfur Resistance of Pt-W Catalysts
Joint Authors
Coloma-Pascual, Fernando
Vera, Carlos R.
Maccarrone, M. Juliana
Quiroga, Mónica E.
Rivas, Ivana L.
Mazzieri, Vanina A.
Badano, Juan M.
Betti, Carolina P.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-27
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The sulfur resistance of low-loaded monometallic Pt catalysts and bimetallic Pt-W catalysts during the partial selective hydrogenation of styrene, a model compound of Pygas streams, was studied.
The effect of metal impregnation sequence on the activity and selectivity was also evaluated.
Catalysts were characterized by ICP, TPR, XRD, and XPS techniques.
Catalytic tests with sulfur-free and sulfur-doped feeds were performed.
All catalysts showed high selectivities (>98%) to ethylbenzene.
Activity differences between the catalysts were mainly attributed to electronic effects due to the presence of different electron-rich species of Pt0 and electron-deficient species of Ptδ+.
Pt0 promotes the cleavage of H2 while Ptδ+ the adsorption of styrene.
The catalyst successively impregnated with W and Pt (WPt/Al) was more active and sulfur resistant than the catalyst prepared with an inverse impregnation order (PtW/Al).
The higher poison resistance of WPt/Al was attributed to both steric and electronic effects.
American Psychological Association (APA)
Betti, Carolina P.& Badano, Juan M.& Rivas, Ivana L.& Mazzieri, Vanina A.& Maccarrone, M. Juliana& Coloma-Pascual, Fernando…[et al.]. 2012. Sulfur Resistance of Pt-W Catalysts. Journal of Chemistry،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-476651
Modern Language Association (MLA)
Betti, Carolina P.…[et al.]. Sulfur Resistance of Pt-W Catalysts. Journal of Chemistry No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-476651
American Medical Association (AMA)
Betti, Carolina P.& Badano, Juan M.& Rivas, Ivana L.& Mazzieri, Vanina A.& Maccarrone, M. Juliana& Coloma-Pascual, Fernando…[et al.]. Sulfur Resistance of Pt-W Catalysts. Journal of Chemistry. 2012. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-476651
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-476651