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A TRANSIENT KINETIC STUDY OF ETHYLENE EPOXIDATION OVER Ag/SiO2
Korean Journal of Chemical Engineering, January 1990, 7(1), 69-73(5), 10.1007/BF02697344
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Abstract
Transient kinetics of ethylene epoxidation over a Ag/SiO2 catalyst has been studied at relatively low temperatures(110-130℃) using an automated square pulse cyclic reactor. It is observed at this low temperatures that the formation of CO2 and H2O was retarded compared to epoxide formation. The 100% selectivity toward ethylene oxide was obtained after hydrogen treatment of the catalyst surface. It indicates that maximum selectivity of 6/7 based on classical molecular oxygen hypothesis should be carefully reviewed. The participation of both atomic and molecular oxygen to epoxide formation was postulated, but the former probably after recombination with subsurface oxygen.
References
Kilty PA, Sachtler WMH, Catal. Rev.-Sci. Eng., 10, 1 (1974)
Hucknell DJ, "Selective Oxidation of Hydrocarbons," Chap. 2, Academic Press, New York (1974)
Verykios XE, Stern FP, Coughlin RW, Catal. Rev.-Sci. Eng., 22, 197 (1980)
Sachtler WMH, Backx C, van Santen RA, Catal. Rev.-Sci. Eng., 23, 127 (1981)
Kilty PA, Rol NC, Sachtler WMH, Proc. 5th Int. Cong. on Catal., p. 929 (1973)
Cant NK, Hall WK, J. Catal., 52, 81 (1978)
Stoukides N, Vayenas CG, J. Catal., 69, 18 (1981)
Campbell CT, Koel BE, J. Catal., 92, 272 (1985)
Force EL, Bell AT, J. Catal., 38, 440 (1975)
Backx C, Moolhuysen J, Geenen P, van Santen RA, J. Catal., 72, 364 (1981)
Grant RB, Lambert RM, J. Catal., 92, 364 (1985)
Tan SA, Grant RB, Lambert RM, J. Catal., 100, 383 (1986)
Voge HH, Adams CR, Adv. Catal., 17, 151 (1967)
Biloen P, J. Mol. Catal., 21, 17 (1983)
Park DW, Gau G, Chem. Eng. Sci., 41(1), 143 (1986)
Park DW, Gau G, J. Catal., 105, 81 (1987)
Park DW, Ghazali S, Gau G, Appl. Catal., 6, 175 (1983)
Bulushev DA, Khasin AV, React. Kinet. Catal. Lett., 36(2), 455 (1988)
Force EL, Bell AT, J. Catal., 40, 356 (1975)
van Santen RA, Moolhuysen J, Sachtler WMH, J. Catal., 65, 478 (1980)
Campbell CT, J. Catal., 99, 28 (1986)
van Santen RA, DeGroot CPM, J. Catal., 98, 530 (1986)
Sandler YL, Beer SZ, Durigon DD, J. Phys. Chem., 70, 3881 (1966)
Ghazali S, Park DW, Gau G, Appl. Catal., 6, 195 (1983)
Mikami J, Satoh S, Kobayashi H, J. Catal., 18, 265 (1970)
Hucknell DJ, "Selective Oxidation of Hydrocarbons," Chap. 2, Academic Press, New York (1974)
Verykios XE, Stern FP, Coughlin RW, Catal. Rev.-Sci. Eng., 22, 197 (1980)
Sachtler WMH, Backx C, van Santen RA, Catal. Rev.-Sci. Eng., 23, 127 (1981)
Kilty PA, Rol NC, Sachtler WMH, Proc. 5th Int. Cong. on Catal., p. 929 (1973)
Cant NK, Hall WK, J. Catal., 52, 81 (1978)
Stoukides N, Vayenas CG, J. Catal., 69, 18 (1981)
Campbell CT, Koel BE, J. Catal., 92, 272 (1985)
Force EL, Bell AT, J. Catal., 38, 440 (1975)
Backx C, Moolhuysen J, Geenen P, van Santen RA, J. Catal., 72, 364 (1981)
Grant RB, Lambert RM, J. Catal., 92, 364 (1985)
Tan SA, Grant RB, Lambert RM, J. Catal., 100, 383 (1986)
Voge HH, Adams CR, Adv. Catal., 17, 151 (1967)
Biloen P, J. Mol. Catal., 21, 17 (1983)
Park DW, Gau G, Chem. Eng. Sci., 41(1), 143 (1986)
Park DW, Gau G, J. Catal., 105, 81 (1987)
Park DW, Ghazali S, Gau G, Appl. Catal., 6, 175 (1983)
Bulushev DA, Khasin AV, React. Kinet. Catal. Lett., 36(2), 455 (1988)
Force EL, Bell AT, J. Catal., 40, 356 (1975)
van Santen RA, Moolhuysen J, Sachtler WMH, J. Catal., 65, 478 (1980)
Campbell CT, J. Catal., 99, 28 (1986)
van Santen RA, DeGroot CPM, J. Catal., 98, 530 (1986)
Sandler YL, Beer SZ, Durigon DD, J. Phys. Chem., 70, 3881 (1966)
Ghazali S, Park DW, Gau G, Appl. Catal., 6, 195 (1983)
Mikami J, Satoh S, Kobayashi H, J. Catal., 18, 265 (1970)
