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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 1996,Vol.12>> Issue(02)>> 114-118     doi: 10.3866/PKU.WHXB19960205         中文摘要
Propane Aromatization over Pt-Ga/HZSM-5 Catalyst
Cao Rong,Hou Zhen-Shan,Zhao Hong,He Di-Jing,Chen Wen-Hai
Xinjiang Institute of Chemistry,Chinese Academy of Sciences,Urumqi 830011
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 Direct conversion of propane to aromatics was investigated on Pt/HZSM5, Ga/HZSM-5 and Pt-Ga/HZSM-5 catalysts. Platinum introduction into Ga/HZSM-5 resulted in an increase of both the activity and selectivity of propane aromatization. Temperature programmed reduction (TPR) and volumetric chemisorption of H2 have been used to provide insight into the functions of Ga and Pt in Pt-Ga/HZSM-5. Synergistic action of Pt and Ga promotes the reduction of Ga3+ to Ga+ causing reduction temPerature of Ga sites shifting to a lower temperature and decreases remarkably the amounts of H2 adsorbed on Pt sites and thus decreases the ability of alkane hydrogenolysis. It was also found that Pt in Pt-Ga/HZSM-5 plays an important role to improve the catalystic stability. Bifunctional roles of Pt and Ga were proposed to understand catalytic behaviors of Pt-Ga/HZSM-5.



Keywords: Propane   Aromatization   Pt-Ga/HZSM-5   TPR   Synergistic bifunctional role   H2 chemisorption  
Received: 1995-03-03 Accepted: 1995-07-19 Publication Date (Web): 1996-02-15
Corresponding Authors: Cao Rong Email:


Cite this article: Cao Rong,Hou Zhen-Shan,Zhao Hong,He Di-Jing,Chen Wen-Hai. Propane Aromatization over Pt-Ga/HZSM-5 Catalyst[J]. Acta Phys. -Chim. Sin., 1996,12 (02): 114-118.    doi: 10.3866/PKU.WHXB19960205
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