Journal
CATALYSIS COMMUNICATIONS
Volume 10, Issue 14, Pages 1925-1930Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2009.07.008
Keywords
Pt-Sn-based catalyst; SAPO-34 support; Selective propane dehydrogenation; Propylene
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Funding
- Natural Scientific Foundation of China [20606020, 20736004, 20736007]
- Higher Education Commission, Islamabad, Pakistan [2007PK0013]
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The Pt-Sn-based catalyst was intensified using SAPO-34 as support for direct propane clehydrogenation to propylene. The catalyst was prepared by sequential impregnation method and characterized by XRF, BET, XRD, NH3-IR, NH3-TPD, H-2-TPR, HR-TEM and O-2-pulse coke analysis. NH3-TPD, IR spectra and XRD results suggested that the doping of metals on SAPO-34 did not affect its acidic strength and structural topology of support, respectively. Propylene selectivity of 94% and total olefins selectivity greater than 97% was achieved using Pt-Sn/SAPO-34. The results were compared with Pt-Sn/ZSM-5 under identical conditions. The possible reasons for improvement were the larger surface area, shape selectivity and particular by suitable acidity of SAPO-34. (C) 2009 Elsevier B.V. All rights reserved.
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