Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
DECANE REFORMING REACTION OVER Pt, Ir AND Pt-Ni BIMETALLIC CATALYSTS SUPPORTED ON Y-ZEOLITE
Korean Journal of Chemical Engineering, July 1996, 13(4), 351-355(5), 10.1007/BF02705961
Download PDF
Abstract
Pt, Ir, Pt-Ir and Pt-Ni bimetallic catalysts supported on NaY-and HY-zeolite were examined as a catalyst for producing gasoline from n-decane via simultaneous reforming and cracking. The catalysts were prepared by calcining and reducing metal-ion-exchanged Y-zeolite with O2 and H2 at 300℃, respectively. Thus prepared catalysts were characterized by hydrogen chemisorption and temperature programmed desorption of ammonia. Pt-Ni/NaY and Pt-Ir/NaY bimetallic catalysts offered the improved activity maintenance compared to Pt/Nay monometallic catalyst. The catalysts supported on HY-zeolite showed higher selectivity toward C5-C7 and C8-C10 than those of the catalysts supported on NaY-zeolite, which is a desired characteristic for increasing octane value of gasoline these days. However, deactivation with reaction time was much more pronounced on HY-zeolit-supported catalyst. When the catalyst was presulfided with H2S, the stability with time on stream was enhanced and the selectivity was quite different from that of the catalyst before presulfiding. The acidity of Y-zeolite and presulfiding of catalyst greatly influenced the activity, selectivity and stability of Pt, Ir, Pt-Ir and Pt-Ir and Pt-Ir and bimetallic catalysts supported on Y-zeolite in n-decane reforming reaction.
References
Biloen P, Helle JN, Verbeek H, Dautgenberg FM, Sachtler WMH, J. Catal., 63, 112 (1980)
Jacobs PA, Tielen M, Linart JP, Nijs H, Uytterhoeven JB, J. Chem. Soc.-Faraday Trans., 73, 1745 (1977)
Jossens LW, Petersen EE, J. Catal., 76, 265 (1982)
Sachtler WMH, J. Mol. Catal., 25, 1 (1984)
Shum VK, Butt JB, Sachtler WMH, J. Catal., 96, 371 (1985)
Yang OB, Ryoo R, Woo SI, J. Catal., 137, 357 (1992)
Yang OB, Woo SI, "Characterization and Catalytic Properties of Pt-Ir Small Bimetallic Cluster in NaY," Studies in Surface Science and Catalysis, Vol. 75, (New Frontiers in Catalysis: Proceedings of 10th International Congress on Catalysis, ed. L. Guczi et al., Elsevier, Amsterdam), 671 (1993)
Yang OB, Woo SI, Hwang IC, Catal. Lett., 19, 239 (1993)
Yang OB, Woo SI, React. Kinet. Catal. Lett., 52(2), 269 (1994)
Jacobs PA, Tielen M, Linart JP, Nijs H, Uytterhoeven JB, J. Chem. Soc.-Faraday Trans., 73, 1745 (1977)
Jossens LW, Petersen EE, J. Catal., 76, 265 (1982)
Sachtler WMH, J. Mol. Catal., 25, 1 (1984)
Shum VK, Butt JB, Sachtler WMH, J. Catal., 96, 371 (1985)
Yang OB, Ryoo R, Woo SI, J. Catal., 137, 357 (1992)
Yang OB, Woo SI, "Characterization and Catalytic Properties of Pt-Ir Small Bimetallic Cluster in NaY," Studies in Surface Science and Catalysis, Vol. 75, (New Frontiers in Catalysis: Proceedings of 10th International Congress on Catalysis, ed. L. Guczi et al., Elsevier, Amsterdam), 671 (1993)
Yang OB, Woo SI, Hwang IC, Catal. Lett., 19, 239 (1993)
Yang OB, Woo SI, React. Kinet. Catal. Lett., 52(2), 269 (1994)
