TREATMENT OF EXHAUST GASES FROM A METHANOL FUELED VEHICLE OVER PEROVSKITE OXIDE CATALYSTS

Kim JS; Choi JH; Lee WY

Korean Journal of Chemical Engineering, Vol.9, No.1, 45-48, January, 1992

As a study on the treatment of exhaust gases from a methanol-fueled vehicle, catalytic oxidation of formaldehyde and methanol on perovskite-type oxides was performed. La_0.8Sr_0.2MnO₃, La_0.8Sr_0.2CoO₃, YBa₂Cu₃O₇(superconductor), and ErBa₂Cu₃O₇(superconductor) were used as catalysts. La-based catalysts were prepared by a citrate method and calcined at 650℃, 800℃, and 900℃, respectively. The catalytic activity of La-based catalysts increased with the increase in the surface area that was dependent on the calcination temperature. Superconductive oxides were also prepared by a citrate method and calcined at 920℃. The catalytic activity of ErBa₂Cu₃O₇ was found to be better than that of YBa₂Cu₃O₇. For La-based perovskite calcined at 650℃, the catalytic activity of La_0.8Sr_0.2MnO₃ was higher than La_0.8Sr_0.2CoO₃. Calcining at 800℃ and 900℃, however, the catalytic activity of La_0.8Sr_0.2CoO₃ was higher than La_0.8Sr_0.2MnO₃.

[References]

Japan Patent, 63-7845 (1988)
McCabe RW, Mitchell PJ, Appl. Catal., 27, 83 (1986)
McCabe RW, Mitchell PJ, J. Catal., 103, 419 (1987)
McCabe RW, Mitchell PJ, Appl. Catal., 44, 82 (1988)
Chu CT, Dunn B, J. Am. Ceram. Soc., 70, C375 (1987)
Misono M, Nitatori T, "Adsorption and Catalysis on Oxide Surface," Elsevier, Amsterdam (1985)
Namura T, Misono M, Yoneda Y, Chem. Soc. Jpn., 11, 1679 (1980)
Johnson DW, Gallagher PK, Schrey F, Rhodes WW, Ceram. Bull., 55, 520 (1976)
Gaines JR, "Chemistry of High-Temperature Superconductors," Am. Chem. Soc., Washington D.C., 272 (1987)

[Referenced By]

[1] Japan Patent, 63-7845 (1988)

[2] McCabe RW, Mitchell PJ, Appl. Catal., 27, 83 (1986)

[3] McCabe RW, Mitchell PJ, J. Catal., 103, 419 (1987)

[4] McCabe RW, Mitchell PJ, Appl. Catal., 44, 82 (1988)

[5] Chu CT, Dunn B, J. Am. Ceram. Soc., 70, C375 (1987)

[6] Misono M, Nitatori T, "Adsorption and Catalysis on Oxide Surface," Elsevier, Amsterdam (1985)

[7] Namura T, Misono M, Yoneda Y, Chem. Soc. Jpn., 11, 1679 (1980)

[8] Johnson DW, Gallagher PK, Schrey F, Rhodes WW, Ceram. Bull., 55, 520 (1976)

[9] Gaines JR, "Chemistry of High-Temperature Superconductors," Am. Chem. Soc., Washington D.C., 272 (1987)