Study on Dissolution Condition of Monsanto Catalyst

몬산토 촉매의 용해방법에 관한 연구

  • Choi, Kwang Soon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Lee, Chang Heon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Pyo, Hyung Yeol (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Park, Yang Soon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Joe, Kih Soo (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Kim, Won Ho (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute)
  • 최광순 (한국원자력연구소 원자력화학연구팀) ;
  • 이창헌 (한국원자력연구소 원자력화학연구팀) ;
  • 표형열 (한국원자력연구소 원자력화학연구팀) ;
  • 박양순 (한국원자력연구소 원자력화학연구팀) ;
  • 조기수 (한국원자력연구소 원자력화학연구팀) ;
  • 김원호 (한국원자력연구소 원자력화학연구팀)
  • Received : 2001.06.14
  • Published : 2001.08.25

Abstract

Dissolution procedures of Monsanto catalyst which has been used to produce acrylronitrile by ammoxidation of propylene have been studied. Optimum dissolution condition of the catalyst supported on silica was obtained by microwave digestion system with mixed of HCl, HF and $H_2O_2$. When a safety device was activated by increased pressure in microwave vessel, Bi, Fe, Mo, Sb and U were not volatilized even though silica was volatilized as $SiF_4$. Quantification results by this method were $SiO_2$ $50.5{\pm}0.4%$, $Sb_2O_3$ $29.6{\pm}0.6%$, $UO_2$ $10.2{\pm}0.1%$, $Fe_2O_3$ $6.1{\pm}0.1%$, $MoO_3$ $0.73{\pm}0.01%$ and $Bi_2O_3$ $0.49{\pm}0.01%$ by ICP-AES and the relative error was within ${\pm}10%$ except bismuth.

Acknowledgement

Supported by : 과학기술부