Abstract
In this work, we investigated the effect of catalyst composition on the surface reactivity of magnesium-aluminum mixed oxides using three probe reactions: dehydrogenation of 2-propanol to propanone, dehydration of 2-propanol to propene, and isomerization of 1-butene. Turnover rates were calculated from the total CO2 adsorption capacity of the mixed oxides, assuming one adsorption site corresponds to one active site. Turnover rates for the dehydrogenation of 2-propanol were independent of the catalyst composition, which is consistent with the structure insensitivity of dehydrogenation reactions. The other two probe reactions followed opposite trends with the Mg:Al ratio: as the Al content of the mixed oxides increased, the turnover rate for 2-propanol dehydration increased while that for 1-butene isomerization decreased. The magnitude of these changes confirms that the mixed oxides are truly interdispersed and not present as separate phases.
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References
A.L. McKenzie, C.T. Fishel and R.J. Davis, J. Catal. 138 (1992) 547.
G. Djega-Mariadassou, L. Davignon and A.R. Marques, J. Chem. Soc. Faraday Trans. I 78 (1982) 2447.
G. Zwicker, K. Jacobi and J. Cunningham, Int. J. Mass Spectrom. Ion Processes 60 (1984) 213.
J.M. Vohs and M.A. Barteau, J. Phys. Chem. 95 (1991) 297.
S. Akhter, K. Lui and H.H. Kung, J. Phys. Chem. 89 (1985) 1958.
C.T. Fishel and R.J. Davis, Langmuir, in press.
M.J. Baird and J.H. Lunsford, J. Catal. 26 (1972) 440.
J.W. Hightower and W.K. Hall, J. Phys. Chem. 71 (1971) 1014.
J. Medema, J. Catal. 37 (1975) 91.
J.H. Lunsford, L.W. Zingery and M.P. Rosynek, J. Catal. 38 (1975) 179.
M.P. Rosynek and F.L. Strey, J. Catal. 41 (1976) 312.
Y. Amenomiya, J. Catal. 46 (1977) 326.
M.P. Rosynek, W.D. Smith and J.W. Hightower, J. Catal. 23 (1971) 204.
A. Ayame and G. Sawada, Bull. Chem. Soc. Japan 62 (1989) 3055.
H.R. Gerberich and W.K. Hall, J. Catal. 5 (1966) 99.
O. Koga, O. Takaharu and K. Tamaru, J. Chem. Soc. Faraday Trans. 176 (1980) 19.
E. Akiba, M. Soma, T. Onishi and K. Tamaru, Z. Phys. Chem. NF 119 (1980) 103.
M. Bowker, R. Petts and K. Waugh, J. Chem. Soc. Faraday Trans. I 81 (1985) 3073.
D. Chadwick and P.J.R. O'Malley, J. Chem. Soc. Faraday Trans. I 83 (1987) 2227.
H. Pines and W.O. Haag, J. Am. Chem. Soc. 82 (1960) 2471.
T.J. Mazanec, J. Catal. 98 (1986) 115.
H. Pines and J. Manassen, Adv. Catal. 16 (1966) 49.
T. Yamaguchi and K. Tanabe, Bull. Chem. Soc. Japan 47 (1974) 424.
C.R. Narayanan, S. Srinivasan, A.K. Datye, R. Gorte and A. Biaglow, J. Catal. 41 (1976) 312.
E.F. McCaffrey, T.A. Micka and R.A. Ross, J. Phys. Chem. 76 (1972) 3372.
K. Tanabe, T. Sumiyoshi, K. Shibata, T. Kiyoura and J. Kitagawa, J. Bull. Chem. Soc. Japan 47 (1974) 1064.
J.L. Lemberton, G. Perot and M. Guisnet, J. Catal. 89 (1984) 69.
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Fishel, C.T., Davis, R.J. Use of catalytic reactions to probe Mg-Al mixed oxide surfaces. Catal Lett 25, 87–95 (1994). https://doi.org/10.1007/BF00815418
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DOI: https://doi.org/10.1007/BF00815418