Hydrodesulfuriztion of Thiophene over Neodymium Added Nickel Catalysts

네오디뮴이 첨가된 니켈 촉매의 티오펜 탈황 반응

  • Moon, Young-Hwan (Samsung Global Environment Research Center) ;
  • Ihm, Son-Ki (Dept. Chem. Eng., Korea Advanced Institute of Science and Technology)
  • 문영환 (삼성지구환경연구소) ;
  • 임선기 (한국과학기술원 화학공학과)
  • Received : 1996.05.13
  • Accepted : 1996.09.04
  • Published : 1996.10.10

Abstract

In this study HDS(hydrodesulfurization) of thiophene was researched over nickel catalysts added with small amounts of neodymium which were prepared by different methods such as unsupported coprepricipitated NdNi catalysts, unsupported intermetallic $NdNi_5$ catalysts, and carbon supported NdNi catalyst. The HDS activity was remarkably increased when a small amounts of neodymium was added to unsupported coprecipitated Ni catalysts. Thus it was known that the role of Nd is important in HDS of thiophene of Ni catalysts. For the case of unsupported intermetallic $NdNi_5$, the intermetallic crystallinity was destroyed to oxide and sulfide after calcination and presulfidation respectively. The HDS activity of thiophene can be explained by surface area of unsupported catalysts. And Nd acts like as structural promoter keeping the high surface area of unsupported catalysts. The HDS activity was increased by each ten times based on 1 gr. of nickel in the order of unsupported intermetallic $NdNi_5$, unsupported coprecipitated NdNi, and carbon supported NdNi catalysts according to different preparation method of catalysts.

Keywords

References

  1. Fifth Int. Cong. Catalysis Kh. M. Minachev
  2. J. Phys. Chem. v.80 no.17 V. T. Coon;T. Takesita
  3. J. Catal. v.44 T. Takesita;W. E. Wallace;R. S. Craig
  4. J. Phys. Chem. v.81 K. Soga;H. Imamura;S. Ikeda
  5. J. Phys. Chem. v.3 no.25 H. Imamura;W. E. Wallacec
  6. J. Catal. v.65 H. Imamura;W. E. wallace
  7. J. Chem. Eng. Jpn. v.19 no.4 T. Shirotsuka;K. Onoe;A. Yokoyama
  8. Am. Phys. Soc. v.40 no.14 H. C. Siegmann;L. Schlapbach;C. R. Brunel
  9. J. Less-Commonmetals v.94 H. Imamura;A. Ohmura;T. Tamura;S. Tsuchuya
  10. J. Catal. v.96 H. Imamura;A. Ohmura;E. Haku;S. Tsuchiya
  11. Rare Earths Mod. Sci. Technol. v.65 W. E. Wallace;J. France;A. Shamsi
  12. Stud. Surf. Sci. Catal. v.34 X. Wu;J. Zhang;L. Chang
  13. U. S. Patent 4,810,361 P. L. Robert;P. J. Angevine;A. W. Chester;G. W. Kirke
  14. U. S. Patent 4,670,134 J. H. Kolts;B. J. Bertus;D. M. Coombs
  15. E. P. Patent 0208405 A1 Y. Barbaux;J. P. Marcq;H. Diaz;M. Pinabiau
  16. E. P. Patent 0273575 A2 J. P. Bonnelle;M. Pinabiau;J. P. Marcq
  17. Appl. Catal. v.38 J. Sterte;J. E. Otterstedt
  18. J. Catal. v.124 S. H. Oh
  19. 촉매 v.7 no.2 임선기
  20. 화학공학과 박사학위논문 문영환
  21. Catal. Rev-Sci. Eng. v.26 no.3 & 4 R. R. Chianelli
  22. Bull. Chem. Soc. Jpn. v.61 T. Nitadory;T. Ichiki;M. Misno