Abstract
Photoluminescence and FT-IR studies of the adsorption of H2 on ZrO2 catalysts have been performdd to clarify the true natuee of active surface sites for the activaiion of H2 in connection with the CO — H2 reaction on the catalyst. The results indicate that the coordinatively unsaturated surface sites with different coordination numbers are generated on the surfaces by evacuation at temperatures higher than 600 K. These surface sites of lower coordination play a significant role in the reversible and irreversible dissociative adsorption of H2 on the active ZrO2 catalyst. The former seems to act as active hydrogen species for the CO — H2 reaction to form branched hydrocarbons on the ZrO2 catalyst.
Similar content being viewed by others
References
R.J. Kokes, A.L. Dent, C.C. Chang, and L.T. Dixon, J. Am. Chem. Soc, 94(1972)4429; C.C. Chang, L.T. Dixon, and R.J. Kokes, J. Phys. Chem., 77(1973)2634.
T. Ito, T. Murakami, and T. Tokuda, J. Chem. Soc, Faradyy Tran. 1, 79(1983)913.
S. Coluccia, F. Boccuzzi, G. Ghiotti, and C. Morterra, J. Chem. Soc, Faradyy Trans. 1, 78(1982)2111.
D. Cordishi, V. Indovina, and M. Ochiuzi, J. Chem. Soc, Faradyy Trans. 1, 74(1978)883.
S. Coluccia and A.J. Tench, in T. Seiyama and K. Tanabe (Eds.), Proc. 7th Int. Congr. Cata. Tokyo, 1980, Vol. B., Elsevier, 1981, p. 1154.
E. Garrone and F.S. Stone, J. Chem. Soc, Faradyy Tran. 1, 83(1987)1237.
T. Onishi, H. Abe, K-I. Maruya, and K. Domen, J. Chem. Soc, Chem. Commun., (1985)617.
J. Kondon, H. Abe, Y. Sakata, K-I. Maruya, K. Domen, and T. Onishi, J. Chem. Soc, Faradyy Trans. 1, 84(1988)511.
S. Coluccia, A.M. Deane, and A.J. Tench, J. Chem. Soc, Faradyy Trans. 1, 74(1979)2913.
A. Zecchina and F.S. Stone, J. Chem. Soc, Faradyy Trans 1, 72(1976)2364; A. Zecchina, M.G. Lofthhouse, and F.S. Stone, iota., 71(1975)1476.
M. Anpo, Y. Yamada, Y. Kubokawa, S. Coluccia, A. Zecchma, and M. Che, J. Chem. Soc, Faraday Trans. 1, 84(1988)751; ibid., 85(1989)609; M. Anpo and Y. Yamada, Mate. Chem. Phys., 18(1988)465; M. Anpo, Y. Yamada, and Y. Kubokawa, J. Chem. Soc, Chem. Commun., (1986)714.
H. Abe, K-I. Maruya, K. Domen, and T. Onishi, Chem. Lett., (1984)1875.
T. Maehashi, K-I. Maruya, K. Domen, K-I. Aika, and T. Onishi, Chem. Lett., (1984)747.
M. Anpo, M. Kondo, S. Coluccia, C. Louis, and M. Che, J. Am. Chem. Soc, 111(1989)8791; M. Anpo, M. Sunamoto, T. Fujii, H. Patterson, and M. Che, Res. Chem. Intermediates, 11(1989)245.
S. Coluccia and T.J. Tench, J. Chem. Soc, Faradyy Trans 1, 79(1983)1881.
The calculation was made by comparing the yields of ZrO2 photolumines-cence with the well-known quantum yield of phosphorescence of benzoph-none adsorbed on the oxides [17].
M. Anpo, M. Sunamoto, and M. Che, J. Phys. Chem. 93(1989)1187.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Anpo, M., Nomura, T., Kondo, J. et al. Photoluminescence and FT-IR studies of the dissociative adsorption of H2 on the active ZrO2 catalyst and its role in the hydrogenation of CO. Res Chem Intermed 13, 195–202 (1990). https://doi.org/10.1163/156856790X00085
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1163/156856790X00085