石油学报(石油加工) ›› 2021, Vol. 37 ›› Issue (4): 866-874.doi: 10.3969/j.issn.1001-8719.2021.04.016

• 研究报道 • 上一篇    下一篇

NiP/Hβ催化正己烷异构化反应性能及机理

张梅,刘咸尚,段尊斌,朱丽君,夏道宏   

  1. 中国石油大学(华东)重质油国家重点实验室 化学化工学院,山东 青岛 266580
  • 收稿日期:2020-05-28 修回日期:2021-01-20 出版日期:2021-07-10 发布日期:2021-05-11
  • 通讯作者: 夏道宏,男,教授,博士,从事洞口化学及精制研究,Tel:0532-86981869, E-mail:xiadh@upc.edu.cn E-mail:xiadh@upc.edu.cn
  • 作者简介:第一作者:张梅,女,硕士研究生,从事石油与天然气加工研究,E-mail:zmxzz1996@163.com
  • 基金资助:
    国家自然科学基金项目(U1662115)资助

Catalytic Performance and Mechanism of NiP/Hβ catalyst on n-Hexane Isomerization

ZHANG Mei, LIU Xianshang, DUAN Zunbin, ZHU Lijun, XIA Daohong   

  1. College of Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China
  • Received:2020-05-28 Revised:2021-01-20 Online:2021-07-10 Published:2021-05-11

摘要: 以氯化镍为镍源,次磷酸钠为磷源,合成活性组分NiP,再通过干混法制备出正己烷异构化新型催化剂NiP/Hβ;采用XRD、FT-IR、NH3-TPD以及H2-TPR等手段分析该催化剂的表面性质及NiP在载体上的分散程度。在温度为280 ℃、正己烷质量空速为1 h-1、氢压为2 MPa、氢/油摩尔比为3条件下,考察了4%NiP/Hβ催化正己烷异构化反应的活性及稳定性。结果表明,正己烷转化率超过80%,异构烷烃收率70%左右、选择性可维持在90%。另外,剖析了NiP/Hβ催化正己烷异构化机理。

关键词: 正己烷异构化, NiP晶体, 催化性能, 异构化机理

Abstract: The active component NiP was synthesized using nickel chloride as the nickel source and sodium phosphite as the phosphorus source, respectively, and a novel isomerization catalyst NiP/Hβ was prepared by the mixing method and used in the isomerization of n-hexane. The properties of catalyst are measured by XRD, FT-IR, NH3-TPD, H2-TPR and other related methods. When the reaction temperature, H2 pressure, mass space velocity and hydrogen/oil molar ratio are of 280 ℃, 2.0 MPa, 1.0 h-1 and 3.0 in the isomerization of n-hexane, the conversion of n-hexane is over 80%, and the yield and selectivity of isomer is about 70% and 90%, respectively. Meanwhile, the catalytic reaction mechanism of n-hexane isomerization over NiP/Hβ catalyst was proposed.

Key words: n-hexane isomerization;NiP, catalytic performance, isomerization mechanism

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