An Influence of Additional Metals over Ni/SiO2 or Ni/Al2O3 on the Formation of CFC-1113 from CFC-113

CFC-113로부터 CFC-1113의 합성시 Ni/SiO2(또는 Al2O3) 촉매상에서 다른 금속의 첨가효과

  • Kim, JinHo (School of Chemical Engineering, Hanyang University) ;
  • Park, Kun-You (Korea Institute of Science and Technology) ;
  • Ha, Baik-Hyon (School of Chemical Engineering, Hanyang University)
  • 김진호 (한양대학교 공과대학 응용화학공학부) ;
  • 박건유 (한국과학기술연구원) ;
  • 하백현 (한양대학교 공과대학 응용화학공학부)
  • Received : 1998.08.31
  • Accepted : 1998.12.12
  • Published : 1999.04.10

Abstract

Nickel was impregnated on the $SiO_2$ and $Al_2O_3$ supports and applied to the reduction reaction of CFC-113 ($CF_2Cl$-$CFCl_2$) with hydrogen to 3FCl ($CF_2$=CFCl, CFC-1113). The conversion was rapidly declined on the Ni/$SiO_2$(or $Al_2O_3$) and the deactivation accelerated as the increase of Ni content. However, the selectivity of 3FCl was maintained at around 80% level. The simultaneous coprecipitation of copper and lithium on Ni/$Al_2O_3$ improved both the conversion and selectivity to 3FCl, but an excessive amount of lithium reduced the conversion as well as the selectivity of 3FCl. However, in the case of Ni/$SiO_2$, the conversion was greatly reduced possibly due to a loss of silica support with high surface area by the reaction of $SiO_2$ with HF. Such a reduction in conversion also can be ascribed to the decrease in active sites, caused by the addition of alkali metal compound, LiOH.

Keywords

CFC-113;CFC-1113;Ni/$SiO_2$($Al_2O_3$);Reduction

Acknowledgement

Supported by : 한국과학기술연구원

References

  1. 日本化學會誌 Y. Takita;H. Yamada;T. Ishihara;Y. Mizuhara
  2. J. of Fluorine Chemistry v.57 S. Okazaki;H. Habutsu
  3. Chemistry Letter R. Ohnish;I. Suzuki;M. Ichikawa
  4. Jpn. Patent, 3-17035 T. Morikawa
  5. 觸媒 v.34 R.Ohnishi
  6. Cemistry Letter Y. Takita;H. Yamada;M> Hashida;T. Ishihara
  7. Chemistry Letter W. Ueda;S. Tomioka;Y. Morikawa;m. Sudo;T. Ikawa
  8. Jpn. Patent, 47-26484 L. G. Anero
  9. Jpn. Patent, 1-258630 T. Morikawa
  10. Chemistry Letter S. Okasaki;A. Kurosaki
  11. Jpn. Patent, 60-185734 T. Morikawa
  12. Jpn. Patent, 3-173840 T. Morikawa
  13. Chemistry Letter W. Ueda;S. Tomioka;Y. Morikawa;M, Sudo;T. Ikawa
  14. 觸媒 v.34 Y. Takita