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Issue
Korean Journal of Chemical Engineering,
Vol.11, No.1, 48-54, 1994
CO OXIDATION ON LaCoO3 PEROVSKITE
Rhee CK, Lee HI
A study of CO oxidation on LaCoO3 perovskite was performed in an ultrahigh vacuum system by means of adsorption and desorption. All gases were adsorbed at ambient temperature. Two adsorption states(α-and β-)of CO exist. The α-peak at 440K is attributed to carbonyl species adsorbed on Co3+ ions while the β-peak at 663 K likely comes from bidentate carbonate formed by adsorption on lattice oxygens. CO2 shows a single desorption peak(β-state, 483 K) whose chemical state may be monodentate carbonate. A new CO2 desorption peak at 590 K can be created by oxidation of CO. O2 also shows two adsorption states. One desorbs at 600 K, which may reflect adsorption on Co3+ ions. The other apparently incorporates with bulk LaCoO3 and desorbs above 1000K. The two adsorption states of CO are oxidized via different mechanisms. The rate determining step in oxidation of α-CO is the surface reaction whereas for that of β-CO, it is desorption of product CO2.
[References]
  1. Shelef M, Catal. Rev.-Sci. Eng., 11, 1, 1975
  2. Egelhoff WF, "The Chemical Physics of Solid Surfaces and Heterogeneous Catalysis," Vol. 4, Eds. King, D.A. and Woodruff, D.P., Elsevier Scientific, New York, p. 424, 1982
  3. Libby WF, Science, 171, 499, 1971
  4. Pedersen La, Libby WF, Science, 176, 1355, 1972
  5. Voorhoeve RJH, Remeika JP, Freeland PE, Mattias BT, Science, 177, 353, 1972
  6. Voorhoeve RJH, Remeika JP, Johnson DW, Science, 180, 62, 1973
  7. Schlatter JC, Klimisch RL, Taylor KC, Science, 179, 798, 1973
  8. Yao YFY, J. Catal., 36, 266, 1975
  9. Voorhoeve RJH, Johnson DW, Remeika JP, Gallagher PK, Science, 195, 827, 1977
  10. Gallagher PK, Johnson DW, Vogel EM, Schrey F, Mater. Res. Bull., 10, 623, 1975
  11. Gallagher PK, Johnson DW, Remeika JP, Schrey F, Trimble LE, Vogel EM, Voorhoeve RJH, Mater. Res. Bull., 10, 529, 1975
  12. Lauder A, Chem. Eng. News, 53, 8, 1975
  13. Johnson DW, Gallagher PK, Schrey F, Rhodes WW, Ceram. Bull., 55, 520, 1976
  14. Gregg SJ, Sing KSW, "Adsorption, Surface Area and Porosity," 2nd ed., Academic Press, New York, p. 62, 1982
  15. Richter L, Bader SD, Brodsky MB, Phys. Rev., B, Condens. Matter, 22, 3059, 1980
  16. Crespin M, Hall WK, J. Catal., 69, 359, 1981
  17. Tascon JMD, Tejuca LG, J. Chem. Soc.-Faraday Trans., 77, 591, 1981
  18. Seah MP, "Practical Surface Analysis," Eds. Briggs, D. and Seah, M.P., John Wiley & Sons, Ltd., New York, p. 203, 1983
  19. Kojima I, Adachi H, Yasumori I, Surf. Sci., 130, 50, 1983
  20. Habenschaden E, Kuppers J, Surf. Sci., 138, L147, 1984
  21. Prior Ka, Schwaha K, Lambert RM, Surf. Sci., 77, 193, 1978
  22. Bridge ME, Comrie LM, Lambert RM, J. Catal., 58, 28, 1979
  23. Tascon JMD, Tejuca LG, Z. Phys. Chem., 121, 63, 1980
  24. Tascon JMD, Tejuca LG, Z. Phys. Chem., 121, 79, 1980
  25. Yamazoe N, Teraoka Y, Seiyama T, Chem. Lett., 1767, 1981
  26. Teraoka Y, Zhang HM, Yamazoe N, Chem. Lett., 1367, 1985
  27. Nakamura T, Misono M, Yoneda Y, Chem. Lett., 1589, 1981
  28. George S, Viswanathan B, Sastri MVC, Ind. J. Chem., 15A, 285, 1977
  29. George S, Viswanathan B, J. Colloid Interface Sci., 95, 322, 1983
[Cited By]
  1. Ko SO, Kim YH, Kim CH, Lee HL, Journal of the Korean Industrial and Engineering Chemistry, 6(4), 650, 1995
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