Amorphous TiO2–SiO2 composites as selective heterogeneous catalysts for the oxidation of styrene to 1, 2-epoxyethylbenzene

  • Jiangyong LiuEmail author
  • Yayun Zhang
  • Zihao Wang
  • Yonghang Deng
  • Panming Jian
  • Lixia Wang
  • Ruiqi Jian
Original Paper


A series of amorphous TiO2–SiO2 composite oxides with different TiO2 contents were prepared by a one-step co-precipitation process as catalysts for selective oxidation of styrene to 1, 2-epoxyethylbenzene with aqueous hydrogen peroxide in acetonitrile. The amorphous TiO2–SiO2 composites are found to be much more catalytically active than the one with partially crystallized TiO2. The TiO2–SiO2 composite with 40 wt% TiO2 (TSCO-3) presents the best catalytic performance. Under the optimal reaction conditions, the styrene conversion can reach 61.0% with a high selectivity of 95.4% to 1, 2-epoxyethylbenzene upon 1 h reaction. Moreover, the TSCO-3 catalyst exhibits a good cycling stability. The excellent catalytic performance can be attributed to the numerous exposed active centers and the fast release of the product from the active centers.


Styrene oxidation 1, 2-Epoxyethylbenzene Amorphous TiO2–SiO2 Hydrogen peroxide 



This work was supported by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (17KJB530011), the Science and Technology Innovation Foundation of Yangzhou University (2017CXJ015), the Natural Science Foundation of Jiangsu Province (BK20180935), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). We thank Dr. Enxian Yuan for the helpful discussions.

Supplementary material

13738_2019_1611_MOESM1_ESM.docx (590 kb)
Supplementary material 1 (DOCX 590 KB)


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Copyright information

© Iranian Chemical Society 2019

Authors and Affiliations

  • Jiangyong Liu
    • 1
    Email author
  • Yayun Zhang
    • 1
  • Zihao Wang
    • 1
  • Yonghang Deng
    • 1
  • Panming Jian
    • 1
  • Lixia Wang
    • 1
  • Ruiqi Jian
    • 2
  1. 1.School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouChina
  2. 2.School of MedicineStanford UniversityStanfordUSA

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