Chemical Industry and Engineering Progree ›› 2015, Vol. 34 ›› Issue (11): 3906-3914.DOI: 10.16085/j.issn.1000-6613.2015.11.013

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Advance in surface characteristics of SO42-/MxOy solid superacid and its isomerization mechanisms for light alkane

MENG Yao1, LI Feng1,2, SONG Hua1,2   

  1. 1 College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
    2 Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, Heilongjiang, China
  • Received:2014-12-29 Revised:2015-04-22 Online:2015-11-05 Published:2015-11-05

SO42-/MxOy型固体超强酸酸中心结构及其在轻质烷烃异构化反应中的机理研究进展

孟瑶1, 李锋1,2, 宋华1,2   

  1. 1 东北石油大学化学化工学院, 黑龙江 大庆 163318;
    2 东北石油大学石油与天然气化工省重点实验室, 黑龙江 大庆 163318
  • 通讯作者: 宋华,博士,教授,研究方向为绿色化学和工业催化。E-mailsonghua2004@sina.com。
  • 作者简介:孟瑶(1990—),女,硕士研究生,研究方向为工业催化。
  • 基金资助:

    中国石油天然气股份有限公司科技风险创新研究项目(07- 06D-01-04-03-02)。

Abstract: Alkane isomerization is an important method to increase gasoline octane value. The surface characteristics of SO42-/MxOy solid superacid, the formation mechanisms of acid sites and their regulatory method were described. The isomerization mechanisms of light alkanes over SO42-/MxOy solid superacid catalyst, including the carbenium ion mechanism, monomolecular reaction mechanism, bimolecular reaction mechanism and mental-acid bifunctional catalytic mechanism were discussed in detail. Some different viewpoints on ismerization mechanisms over SO42-/MxOy solid superacid catalysts were illustrated. In the future, it is necessary to further study the isomerization mechanism, formation of active sites and the deactivation reasons of catalysts, and to explore the modification and preparation methods for superacid, so that the catalysts with a higher activity for isomerization and more stability could be prepared. Finally, the future research emphasis on SO42-/MxOy solid superacid catalyst was pointed out.

Key words: alkane, catalyst, SO42-/MxOy solid superacid, reactivity, isomerization, mechanism

摘要: 烷烃异构化是提高汽油辛烷值的重要方法。本文阐述了SO42-/MxOy型固体超强酸的表面特征及其酸中心的形成机理与调控方法。综述了SO42-/MxOy型固体超强酸催化剂轻质烷烃异构化碳正离子机理、单分子反应机理、双分子反应机理和金属/酸性双功能催化剂催化机理。介绍了在SO42-/MxOy型固体超强酸催化剂上异构化反应机理的不同观点。今后,需进一步深入开展轻质烷烃异构化反应机理、活性位形成及催化剂失活原因等方面的研究,探究固体超强酸催化剂的改性方法和制备方法,制备出高催化剂活性和稳定性的异构化催化剂。

关键词: 烷烃, 催化剂, SO42-/MxOy固体超强酸, 活性, 异构化, 机理

CLC Number: 

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