Abstract
CO2 decomposition reaction into carbon was studied at 300 °C using the H2-reduced Zn(II)-bearing ferrite which consisted of the Zn(II) oxide and the active wüstite. The H2-reduced Zn(II)-bearing ferrite was prepared from Zn(II)-bearing ferrite by the reduction with H2 gas at 300 °C. The wüstite (FeδO) in the H2-reduced Zn(II)-bearing ferrite had a higher δ value (δ=0.97, active wüstite) than those of the normal wüstites (0.90<δ<0.95) prepared at high temperatures (>570 °C). The decomposition reaction of CO2 proceeds in two steps: (1) CO2 reduction to CO, and (2) CO decomposition into carbon. In the initial stage, the reduction of CO2 into CO takes place, accompanying both the oxidation of the active wüstite to the slightly oxidized wüstite, and the transformation of active wüstite and Zn(II) oxide into the Zn(II)-bearing ferrite. After the reaction of the initial stage attains equilibrium of an apparent state of rest, the adsorbed CO is decomposed into carbon, associated with the transformation of the slightly oxidized wüstite and the Zn(II) oxide into the Zn(II)-bearing ferrite.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Y. Hori, A. Murata, K. Kikuchi and S. Suzuki, J. Amer. Chem. Soc. 109 (1987) 5022.
H. Noda, S. Ikeda, Y. Oda, K. Imai, M. Maeda and K. Ito, Bull. Chem. Soc. Jpn. 63 (1990) 2459.
M. Ulman, A. H. A. Tinnemans, A. Mackor, B. Aurian-Blajeni and M. Halmann, Int. J. Solar Energy 1 (1982) 213.
K. W. Frese, Jr and D. Canfield, J. Electrochem. Soc. 131 (1984) 2518.
J. Hawecker, J. Lehn and R. Ziessel, Helv. Chim. Acta 69 (1986) 1990.
J. O'm. Bockris and J. C. Wass, Mater. Chem. Phys. 22 (1989) 249.
V. A. Naumov, Kinet. Catal. 22 (1982) 847.
J. A. Marcos, R. H. Buitrago and E. A. Lombardo, J. Catal. 105 (1987) 95.
M. A. Ulla, R. A. Migone, J. O. Petunchi and E. A. Lombardo, ibid. 105 (1987) 107.
M. Lee, J. Lee, C. Chang and T. Dong, Appl. Catal. 72 (1991) 267.
A. Sacco, Jr and R. C. Reid, Carbon 17 (1979) 459.
M. Lee, J. Lee and C. Chang, J. Chem. Engng Jpn 23 (1990) 130.
“Gmelins Handbuch der Anorganischen Chemie”. 8th edn, Kohlenstoff Part C2 (Springer Verlag, Berlin, 1972) p. 203.
T. Kanzaki, J. Nakajima, Y. Tamaura and T. Katsura, Bull. Chem. Soc. Jpn 54 (1981) 135.
I. Iwasaki, T. Katsura, T. Ozawa, M. Yoshida, M. Mashima, H. Haramura and B. Iwasaki, Bull. Volcanol. Soc. Jpn. Ser. II 5 (1960) 9.
E. R. Jette and F. Foote, J. Chem. Phys. 1 (1933) 29.
L. S. Darken and R. W. Gurry, J. Amer. Chem. Soc. 67 (1945) 1945.
I. Bransky and A. Z. Hed, ibid. 51 (1968) 231.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kodama, T., Tabata, M., Tominaga, K. et al. Decomposition of CO2 and CO into carbon with active wüstite prepared from Zn(II)-bearing ferrite. JOURNAL OF MATERIALS SCIENCE 28, 547–552 (1993). https://doi.org/10.1007/BF00357836
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00357836