Effect of oxychlorination treatment on the regeneration of Pt–Sn/Al2O3 catalyst for propane dehydrogenation

Effect of oxychlorination treatment on the regeneration of Pt–Sn/Al2O3 catalyst for propane... Propane dehydrogenation and regeneration of Pt–Sn/θ-Al2O3 catalysts was evaluated with oxychlorination treatment. It was observed that the catalytic activity was not fully recovered after coke burning followed by hydrogen reduction process because of the unsatisfying recovery of Pt sintering. In this study, oxychlorination treatment was additionally employed between coke burning and hydrogen reduction. Oxychlorination used diluted HCl at the range of 625–7000 ppm. The best recovery of catalytic activity was achieved at the HCl concentration of 5000 ppm. The effective redispersion of Pt was also examined by CO chemisorption, XRD, XPS, CHSN analysis, and STEM. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Effect of oxychlorination treatment on the regeneration of Pt–Sn/Al2O3 catalyst for propane dehydrogenation

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2300-2
Publisher site
See Article on Publisher Site

Abstract

Propane dehydrogenation and regeneration of Pt–Sn/θ-Al2O3 catalysts was evaluated with oxychlorination treatment. It was observed that the catalytic activity was not fully recovered after coke burning followed by hydrogen reduction process because of the unsatisfying recovery of Pt sintering. In this study, oxychlorination treatment was additionally employed between coke burning and hydrogen reduction. Oxychlorination used diluted HCl at the range of 625–7000 ppm. The best recovery of catalytic activity was achieved at the HCl concentration of 5000 ppm. The effective redispersion of Pt was also examined by CO chemisorption, XRD, XPS, CHSN analysis, and STEM.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 17, 2015

References

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