石油炼制与化工 ›› 2016, Vol. 47 ›› Issue (10): 27-31.

• 催化剂 • 上一篇    下一篇

制备因素对Pt/ZSM22催化剂临氢异构化反应性能的影响

刘有鹏,于海斌,孙国方,费亚南   

  1. 中海石油天津化工研究设计院有限公司
  • 收稿日期:2016-04-15 修回日期:2016-05-31 出版日期:2016-10-12 发布日期:2016-10-11
  • 通讯作者: 孙国方 E-mail:sgf7996119@163.com
  • 基金资助:
     

EFFECT OF PREPARATION FACTORS OF Pt/ZSM-22 CATALYST ON ITS HYDROISOMERIZATION

    

  1.  
  • Received:2016-04-15 Revised:2016-05-31 Online:2016-10-12 Published:2016-10-11
  • Contact: Guo-Fang SUN E-mail:sgf7996119@163.com
  • Supported by:
     

摘要: 以加氢裂化尾油为原料,考察了Pt负载方式、前驱体溶液pH、Pt负载量对异构化催化剂Pt/ZSM-22-γ-Al2O3的影响。结果表明,成型后离子交换法制备的催化剂Pt分散度最高。催化剂异构化选择性及反应活性顺序由高到低的顺序为:成型后离子交换法>分子筛离子交换法>等体积浸渍法。成型后离子交换的前驱体溶液pH为9时,Pt分散度为87.2%。Pt负载量(w)为0.3%时,150N基础油倾点为-15℃的基础油收率为75.8%。异构化选择性达到最佳。

关键词: 离子交换, 分子筛, 浸渍, Pt负载量, pH

Abstract: The effect of Pt loading method, the pH of precursor solution and the Pt loading amount on hydroisomerization of Pt/ZSM-22-γ-Al2O3 was investigated for hydrocracking tail oil. The results show that the catalyst prepared by ion-exchange after support forming has the highest dispersion of Pt. The hydroisomerization selectivity and activity order is: ion-exchange after forming > molecular sieve ion-exchange > impregnation. When the pH of precursor solution of ion-exchange after forming is 9 and the Pt loading is 0.30%, the dispersion degree of Pt is 87.2%, the yield of 150N base oil with a pour point of -15℃ is 75.8%, and the hydroisomerization selectivity achieves the best.

Key words: ion exchange, molecular sieve, impregnation, Pt loading, pH

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