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K2WO4/Al2O3 catalysts for methanethiol synthesis from methanol and H2S: effect of catalyst preparation procedure

  • Shiping ChenEmail author
  • Yuanhua Zhang
  • Liqin Lin
  • Xiaolian Jing
  • Yiquan Yang
Article
  • 16 Downloads

Abstract

A series of the K2WO4/γ–Al2O3 catalysts was prepared with different introducing strategy of the K2WO4 to alumina and characterized by means of N2 adsorption–desorption, XRD, XPS, CO2/NH3-TPD, H2-TPR. It was found that the different introduction strategy of K2WO4 did not change the valence state of surface species of the catalysts but markedly influenced the structures, dispersion of tungsten and potassium species and acid-basic properties. The catalysts prepared by the sol–gel precipitation method exhibit larger surface area, better dispersion of the W species and more favorable acid-basic properties, thus possess higher activity for the reaction, particularly, at the lower reaction temperature of 320 °C, the methanethiol yield was about 8.3% higher than that over the catalyst prepared by traditional impregnation method. As a model catalyst, the catalysts prepared by sol–gel precipitation method show a higher and more stable reactivity with small dosage of water and CS2, and worth in industrial application.

Keywords

Methanethiol Methanol K2WO4/Al2O3 Introduction strategy Sol–gel alumina 

Notes

Acknowledgements

We gratefully acknowledge the Natural Science Foundation of Fujian Province (2016J05044, 2018J01441).

Supplementary material

11144_2019_1614_MOESM1_ESM.docx (401 kb)
Supplementary material 1 (DOCX 401 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Department of Chemical Engineering and Pharmacy, College of Chemical Engineering and Materials ScienceQuanzhou Normal UniversityQuanzhouPeople’s Republic of China
  2. 2.Shanghai Huafon Material Technology InstituteShanghaiPeople’s Republic of China
  3. 3.Department of Chemistry, College of Chemistry and Chemical Engineering, and National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and EstersXiamen UniversityXiamenPeople’s Republic of China

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