高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (1): 92.

• 论文 • 上一篇    下一篇

SO42-/ZrO2和SO42-/Al2O3-ZrO2催化剂上的正戊烷反应

夏勇德, 华伟明, 高滋   

  1. 复旦大学化学系, 上海 200433
  • 收稿日期:1998-04-27 出版日期:1999-01-24 发布日期:1999-01-24
  • 基金资助:

    国家基础研究重大项目资助

Pentane Reaction over SO42-/ZrO2and SO42/Al2O32ZrO2Catalysts

XIA Yong-De, HUA Wei-Ming, GAO Zi   

  1. Department of Chemistry, Fudan University, Shanghai, 200433
  • Received:1998-04-27 Online:1999-01-24 Published:1999-01-24

摘要: 研究了添加Al对SO42-/ZrO2超强酸样品的晶化、比表面、硫含量、超强酸性和正戊烷反应性能的影响,考察了活化温度、反应温度、Al含量和载Pt对催化剂活性和选择性的影响.SO42-/Al2O3ZrO2催化剂的酸强度与SO42-/ZrO2基本相当,但超强酸位比后者多,未载Pt时正戊烷反应活性和稳定性明显高于后者.负载Pt后,正戊烷异构化选择性和稳定性大大提高,但Pt/SO42-/Al2O3ZrO2催化剂的反应活性与Pt/SO42-/ZrO2相近,Al的促进作用不明显.

关键词: 固体超强酸, SO42-/ZrO2, SO42-/Al2O3-ZrO2, 铂, 正戊烷异构化

Abstract: The effectof incorporation of ALInto ZrO2on The crystallization, surface area, sulf ur content, superacidity and catalytic behavior of SO42-/ZrO2for n-pentane reaction was studied, and The effectof activation temperat ure, reaction temperat ure, Al content and Pt loading on The activity and selectivity of SO42-/ZrO2was investigated as well.The acid strengths of SO42-/Al2O32ZrO2catalysts are almost identical with thatof SO42-/ZrO2catalyst, where as the formerhas more superacidic sites than The latter.Before loading with Pt, SO42-/Al2O32ZrO2catalyst isobviously more active and stable than SO42-/ZrO2for n-pentane conversion reaction.Supporting Pt can improve The isomerization selectivity and stability of The catalysts markedly, but The activi-ties of Pt/SO42-/Al2O32ZrO2and Pt/SO42-/ZrO2catalysts for n2pentane isomerization are almostidentical, demonst rating that The promoting effectof ALIs not evident in The presence of Pt andhydrogen.

Key words: Solid superacid, SO42-/ZrO2, SO42-/Al2O32ZrO2, Platinum, n-Pentane isomeriza-tion

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