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Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts
Yu, Changlin; Ge, Qingjie; Xu, Hengyong; Li, Wenzhao; Xu HY(徐恒泳); Xu HY(徐恒泳)
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
2007-12-05
DOI10.1021/ie0704952
Volume46Issue:25Pages:8722-8728
Indexed ByISTP ; SCI
SubtypeArticle
Department8
Funding Project801
Contribution Rank1;1
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Chemical
WOS Research AreaEngineering
WOS KeywordHYDROGEN COMBUSTION SHC ; SUPPORTED PLATINUM ; CARBON-MONOXIDE ; PROCESS MODE ; CHEMISORPTION ; REDUCTION ; SPECTROSCOPY ; PROPENE ; CERIA ; CEO2
AbstractThe influences of oxygen addition to catalytic dehydrogenation system on the structure and the dehydrogenation performance of Pt-based catalysts were investigated. The results showed that a small amount of oxygen addition into the reaction system could greatly improve the catalytic performance of Pt-Sn/Ce-gamma-Al2O3 catalyst although it evidently decreased the catalytic stability of Pt/gamma-Al2O3, Pt-Sn/gamma-Al2O3, and Pt/Ce-gamma-Al2O3 catalysts. The addition of a small amount of oxygen can decrease the pressure of hydrogen, eliminate coke, and provide partial heat for catalytic dehydrogenation reaction. Hydrogen chemisorption results indicated that steam could reduce the interactions between metal and support, thus promoting the sintering of platinum particles. That adverse effect of steam on the structure on Pt-Sn/Ce-gamma-Al2O3 was moderate, but it was serious on other Pt-based catalysts due to low-stability platinum particles. Both the promoting effect of Ce on the propane conversion and the inhibiting effect of Sri on the CO, formation could be simultaneously achieved during the reaction over Pt-Sn/Ce-gamma-Al2O3,catalyst. At 546 degrees C, a 50% yield of propylene improvement was obtained due to the small oxygen addition.
Language英语
URL查看原文
WOS IDWOS:000251244900045
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/99581
Collection中国科学院大连化学物理研究所
Corresponding AuthorXu HY(徐恒泳); Xu HY(徐恒泳)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, Appl Catalysis Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Yu, Changlin,Ge, Qingjie,Xu, Hengyong,et al. Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2007,46(25):8722-8728.
APA Yu, Changlin,Ge, Qingjie,Xu, Hengyong,Li, Wenzhao,徐恒泳,&徐恒泳.(2007).Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,46(25),8722-8728.
MLA Yu, Changlin,et al."Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 46.25(2007):8722-8728.
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