Comparative Reaction Characteristics of Methane Selective Catalytic Reduction with CO Generation Effect in the N2O Decomposition over Mixed Metal Oxide Catalysts

MMO 촉매 하에서 N2O 분해에 대한 메탄 SCR 반응 및 CO 생성 효과의 비교 연구

  • Park, Sun Joo (Department of Industrial chemistry, Sangmyung University) ;
  • Park, Yong Sung (Department of Industrial chemistry, Sangmyung University)
  • Received : 2008.08.20
  • Accepted : 2008.10.08
  • Published : 2008.12.10

Abstract

Nitrous oxide ($N_2O$), known as one of the major greenhouse gases, is an important component of the earth's atmosphere, and gives rise to precursor of acid rain and photochemical smog. For the removal of $N_2O$ and other nitrogen oxides, the SCR reaction system with various reductants is widely used. This study is based on the results of experimental and theoretical examinations on the catalytic decomposition of sole nitrous oxide ($N_2O$) and selective catalytic reduction of $N_2O$ with $CH_4$ in the presence of oxygen using mixed metal oxide catalysts obtained from hydrolatcite-type precursors. When $CH_4$ is fed together with a reductant, it affects positively on the $N_2O$ decomposition activity. At an optimum ratio of $CH_4$ to $O_2$ mole ratio, the $N_2O$ conversion activity is enhanced on the SCR reaction with partial oxidation of methane.

Keywords

$N_2O$ decomposition;SCR reaction;mixed metal oxide catalysts;hydrotalcite

Acknowledgement

Supported by : 상명대학교 자연과학연구소

References

  1. G. S. Qi and R. T. Tang, Apply Catal. B, 217 (2003).
  2. H. Bosch and F. Janssen, Catal. Today., 2, 369 (1998). https://doi.org/10.1016/0920-5861(88)80002-6
  3. G. Fornasari, M. Gazzano, D. Matteuzzi, F. Trifiro, and A. Vaccari, Applied Clay Science, 10, 69 (1995). https://doi.org/10.1016/0169-1317(95)00022-V
  4. D. A. Hickman and L. D. Schmidt, Journal of Catalysis, 138, 267 (1992). https://doi.org/10.1016/0021-9517(92)90022-A
  5. M. P. Kang, Y. S. Song, H. S. Lee, S. D. Kim, Y. O. Park, T. S. Hwang, and Y. W. Rhee, HWAHAK KONGHAK, 40, 725 (2002).
  6. V. I. Paevulescu, P. Geaege, and B. Delmon, Catal. Today, 46, 233 (1998). https://doi.org/10.1016/S0920-5861(98)00399-X
  7. G. S. Qi and R. T. Tang, Catal., 434 (2003).
  8. H. Bosch and F. Jassen, Catal. Today, 2, 369 (1998). https://doi.org/10.1016/0920-5861(88)80002-6
  9. B. Montanari, A. Vaccari, M. Gazzano, and H. Papp, Applied Catalysis B, 13, 205 (1997). https://doi.org/10.1016/S0926-3373(96)00106-3
  10. L. L. Sloss, A. K. Hjakmasson, H. N. Soud, L. M. Cambell, D. K. Stome, G. S. Shareef, T. Emmel, M. Maibodi, C. D. Livemgood, and J. Markvssen, Nitrogen Oxides Control Technology Fact Book, Plenum Press, New York (1992).
  11. F. Basile, G. Fornasari, M. Gazzano, and A. Vaccari, Applied Clay Science, 16, 185 (2000). https://doi.org/10.1016/S0169-1317(99)00053-8
  12. S. M. Cho, Chem. Eng. Prog., 90, 39 (1994).