Hydrodesulfurization Activity of Co–Mo/Al<sub>2</sub>O<sub>3</sub> Catalysts Prepared with Citric Acid: Post-treatment of Calcined Catalysts with High Mo Loading

DOI Web Site Web Site 1 Citations 45 References

Bibliographic Information

Other Title
  • クエン酸を用いて調製したCo–Mo/Al<sub>2</sub>O<sub>3</sub>触媒の水素化脱硫活性 —高モリブデン担持量焼成触媒のポスト処理—
  • Hydrodesulfurization activity of Co-Mo/Al2O3 catalysts prepared with citric acid: post-treatment of calcined catalysts with high Mo loading

Search this article

Abstract

Co–Mo/Al2O3 catalysts with high loading of Mo (20 wt% Mo) were prepared by the addition of citric acid (CA) using a simultaneous impregnation method or a post-treatment method. The catalyst activity was investigated for the hydrodesulfurization (HDS) of dibenzothiophene. TEM, Co K-edge XANES, NO adsorption capacity, and surface area measurements were conducted to characterize the catalysts. The catalysts were also investigated by the chemical vapor deposition technique using Co(CO)3NO to prepare Co/MoS2 and Co/Co–MoS2 catalysts. Addition of citric acid by the post-treatment method to calcined (Co)–Mo/Al2O3 oxide catalysts significantly enhanced the edge dispersion of MoS2 particles and the catalytic activity of Co/Mo/Al2O3 and Co–Mo/Al2O3, whereas citric acid addition by the simultaneous impregnation method hardly affected the edge dispersion. The highest HDS activity was obtained with a CA/Mo mole ratio of 1.5-2 for the post-treatment catalysts. The post-treatment method may be applicable to the regeneration of deactivated HDS catalysts.

Journal

Citations (1)*help

See more

References(45)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top