| 掺杂Cr助剂的Pt/USY催化剂上正庚烷异构化反应研究(英文) |
| Hydroisomerization of n-Heptane over Pt/USY Catalysts Promoted by Cr Additive |
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| 摘要: |
| 关键词: 加氢异构化 正庚烷 助剂 USY Pt |
| 基金项目: |
| Abstract: The Pt-supported USY zeolite catalysts doped with Cr, Al or Zn were prepared by impregnation, and characterized by XRD, low temperature nitrogen physisorption, H2-chemisorption and IR spectroscopy of the pyridine adsorption. Catalytic activities were evaluated via the hydroisomerization of n-heptane with an atmospheric fixed-bed reactor. The Pt dispersion and acidity of the Pt-supported USY catalyst were influenced by the addition of the promoters. The Pt-supported catalysts promoted by Cr, Al or Zn, especially by Cr, were catalytically much more stable and exhibited much higher catalytic activity and selectivity for isomerization of n-heptane than the catalysts without the dopant. Both the conversion and selectivity are discussed in relation with the physicochemical properties of catalysts. |
| Keywords: hydroisomerization n-heptane promoter USY platinum |
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| 魏瑞平,顾焰波,孔岩,王军.掺杂Cr助剂的Pt/USY催化剂上正庚烷异构化反应研究(英文)[J].无机化学学报,2007,23(3):523-528. |
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