Abstract
After a high-temperature reduction (HTR) at 773 K, TiO2-supported Au became very active for CO oxidation at 313 K and was an order of magnitude more active than SiO2-supported Au, whereas a low-temperature reduction (LTR) at 473 K produced a Au/TiO2 catalyst with very low activity. A HTR step followed by calcination at 673 K and a LTR step gave the most active Au/TiO2 catalyst of all, which was 100-fold more active at 313 K than a typical 2% Pd/Al2O3 catalyst and was stable above 400 K whereas a sharp decrease in activity occurred with the other Au/TiO2 (HTR) sample. With a feed of 5% CO, 5% O2 in He, almost 40% of the CO was converted at 313 K and essentially all the CO was oxidized at 413 K over the best Au/TiO2 catalyst at a space velocity of 333 h−1 based on CO + O2. Half the chloride in the Au precursor was retained in the Au/TiO2 (LTR) sample whereas only 16% was retained in the other three catalysts; this may be one reason for the low activity of the Au/TiO2 (LTR) sample. The reaction order on O2 was approximately 0.4 between 310 and 360 K, while that on CO varied from 0.2 to 0.6. The chemistry associated with this high activity is not yet known but is presently attributed to a synergistic interaction between gold and titania.
Similar content being viewed by others
References
J.C. Frost, Nature 334 (1988) 577.
S.D. Lin and M.A. Vannice, Catal. Lett. 10 (1991) 47.
A.G. Daglish and D.D. Eley, 2nd ICC, 1960, 2 (1961) 1615.
N.W. Cant and P.W. Fredrickson, J. Catal. 37 (1975) 531.
M. Haruta, T. Kobayashi, H. Sano and N. Yamada, Chem. Lett. (1987) 405.
M. Haruta, N. Yamada, T. Kobayashi and S. Lijima, J. Catal. 115 (1989) 301.
S.D. Gardner, G.B. Hoflund, D.R. Schryer, J. Schryer, B.T. Upchurch and E.J. Kielin, Langmuir 7 (1991) 2135.
S.D. Gardner, G.B. Hoflund, B.T. Upchurch, D.R. Schryer, E.J. Kielin and J. Schryer, J. Catal. 129 (1991) 114.
T. Kobayashi, M. Haruta, H. Sano and M. Nakane, Sensors and Actuators 13 (1988) 339.
T. Kobayashi, M. Haruta, S. Tsubota, H. Sano and B. Delmon, Sensors and Actuators B1 (1990) 222.
P. Weisz, Phys. Chem. NF 11 (1957) 1.
K.I. Choi and M.A. Vannice, J. Catal. 131 (1991) 1.
S.J. Tauster, S.C. Fung and R.L. Garten, J. Am. Chem. Soc. 100 (1978) 170.
S.D. Lin, PhD Thesis, The Pennsylvania State University, PA, USA (1992).
J.J. Stephan and V. Ponec, J. Catal. 42 (1976) 1.
A.G. Sault, R.J. Madix and C.T. Campbell, Surf. Sci. 169 (1986) 347.
D.A. Outka, and R.J. Madix, Surf. Sci. 179 (1987) 351.
K.I. Choi and M.A. Vannice, J. Catal. 131 (1991) 22.
G.I. Golodets, L.G. Svintsova, I.T. Chashechnikova and V.V. Shimanovskaya, Kinet. Katal. 31 (1990) 997.
P. Vergnon, J.M. Herrmann and S.J. Teichner, Zh. Fiz. Khim. 52 (1978) 3025.
Y. Onishi and T. Hamamura, Bull. Chem. Soc. Japan 43 (1970) 996.
I.L. Mikhailova, I.S. Sazonova and N.P. Keier, Kinet. Katal. 6 (1965) 704.
V.D. Sokolovskii, A.G.K. Boreskov, A.A. Davydov, A.G. Anshits and Yu.M. Shchekochikhin, Dokl. Akad. Nauk SSSR 214 (1974) 1361.
A.A. Bobyshev and V.A. Radtsig, Khim. Fiz. 4 (1985) 501.
R. Huzimura, H. Kurisu and T. Okuda, Surf. Sci. 197 (1988) 444.
O. Gonen, P.L. Kuhns, J.S. Waugh and J.P. Fraissard, J. Phys. Chem. 93 (1989) 504.
A.G. Shastri, A.K. Datye and J. Schwank, J. Catal. 87 (1984) 265.
G.L. Haller and D.E. Resasco, Adv. Catal. 36 (1989) 173.
N.D. Spencer and R.M. Lambert, Surf. Sci. 107 (1981) 237.
Y. Kang, J.A. Skiles and J.P. Wightman, J. Phys. Chem. 84 (1980) 1448.
R.V. Siriwardane and J.P. Wightman, J. Colloid Interface Sci. 94 (1983) 502.
G.D. Parfitt, J. Ramsbotham and C.H. Rochester, Faraday Soc. Trans. 67 (1971) 3100.
S.D. Gardner, G.B. Hoflund, M.R. Davidson, H.A. Laitinen, D.R. Schryer and B.T. Upchurch, Langmuir 7 (1991) 2140.
J. Schwank, S. Galvagno and G. Parravano, J. Catal. 63 (1980) 415.
S. Galvagno and G. Parravano, Ber. Bunsenges. Phys. Chem. 83 (1979) 894.
D.Y. Cha and G. Parravano, J. Catal. 18 (1970) 200.
E. Lisowski, L. Stobinski and R. Dus, Surf. Sci. 188 (1987) L735.
B. Beden, A. Bewick, K. Kunimatsu and C. Lamy, J. Electroanal. Chem. 142 (1982) 345.
J. Schwank, G. Parravano and H.L. Gruber, J. Catal. 61 (1980) 19.
S. Galvagno and G. Parravano, J. Catal. 55 (1978) 178.
A.F. Benton and J.C. Elgin, J. Am. Chem. Soc. 49 (1927) 2426.
N.W. Cant and K.H. Hall, J. Phys. Chem. 75 (1971) 2914.
S. Naito and M. Tanimoto, J. Chem. Soc. Chem. Commun. (1988) 832.
I.W. Bassi, F.W. Lytle and G. Parravano, J. Catal. 42 (1976) 139.
G. Cocco, S. Enzo, G. Fagherazzi, L. Schiffini, I.W. Bassi, G. Vlaic, S. Galvagno and G. Parravano, J. Phys. Chem. 83 (1979) 2527.
H. Kageyama, N. Kamijo, T. Kobayashi and M. Haruta, Physica B158 (1989) 183.
W.N. Delgass, M. Boudart and G. Parravano, J. Phys. Chem. 72 (1968) 3563.
M. Batista-Leal, J.E. Lester and C.A. Lucchesi, J. Electron. Spectry. Relat. Phenom. 11 (1977) 333.
K.S. Liang, W.R. Salaneck and I.A. Akasay, Solid State Commun. 19 (1976) 329.
K.S. Kim and N. Winograd, Chem. Phys. Lett. 30 (1975) 91.
M. Boudart, D.E. Mears and M.A. Vannice, Ind. Chim. Belg. 32 (1967) 281.
M.A. Vannice, S.H. Hyun, B. Kalpakci and W.C. Liauh, J. Catal. 56 (1979) 358.
Y.B. Zhao and R. Gomer, Surf. Sci. 261 (1992) 171.
L. Kieken and M. Boudart, 10th Int. Congr. on Catalysis, Budapest, July 1992.
M.A. Vannice, Catal. Today 12 (1992) 255.
S. Tsubota, M. Haruta, T. Kobayashi, A. Veda and Y. Nakahara, in:Preparation of Catalysts, Vol. 5, eds. G. Poncelet, P.A. Jacobs, P. Grange and B. Delmon (Elsevier, Amsterdam, 1991) p. 695.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lin, S.D., Bollinger, M. & Vannice, M.A. Low temperature CO oxidation over Au/TiO2 and Au/SiO2 catalysts. Catal Lett 17, 245–262 (1993). https://doi.org/10.1007/BF00766147
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00766147