Abstract
Further experimental evidences of redispersion on supported platinum catalysts studied by means of TPR, TPD and cyclohexene hydrogenation reaction. Pt/r-Al2O3 exhibits stronger interaction between the metal oxide and the support as compared with Pt/SiO2 and Pt/TiO2. The formation of surface complex is enhanced as oxidation temperature increases. The TPD spectrum of hydrogen on Pt/TiO2 shifts to higher temperature upon reduction at high temperature and shifts again to its original position upon oxidation. Shift of TPD spectrum does not appear in other catalysts. The suggested mechanism for redispersion is the spreading of platinum oxide and trapping of migrating species.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Lee, T.J. and Kim, Y.G.:KJChE.,2(1), 55(1985).
Weller, S.W. and Montagna, A.A.:J. Catal.,20, 394(1971).
Kraft, M. and Spindler, H.:Proc. 4th Int. Congr. Catal., 1252(1969).
Straguzzi, G.I., Aduriz, H.R. and Gigola, CE.:J. Catal.,66, 171 (1980).
Ruckenstein, E. and Malhotra, M.L.:J. Catal.,41, 303 (1979).
Fiedorow, R.M.J. and Wanke, S.E.:J. Catal.,43, 35(1976).
Jaworska-Galas, Z. and Wrzyszez, J.:Int. Chem. Eng.,6, 604 (1966).
Lieske, H., Lietz, G., Spindler, H. and Voller, I:J. Catal.,81, 8(1983).
Dadyburjor, D.B.:J. Catal.,57, 504 (1979).
Gollob, R. and Dadyburjor, D.B.:J. Catal.,68, 473 (1981).
Emelianovov, G.I. and Hassan, S.A.:Proc. 4th Int. Congr. Catal., 1329 (1968).
Adler, S.F. and Keavney, J.J:J. Phys. Chem.,64, 208(1960).
Johnson, M.F.L. and Keith, C.D.:J. Phys. Chem.,67, 200(1963).
Ruckenstein, E. and Chen. J.J.:J. Catal.,70, 233 (1981).
Fiedorow, R.M.J., Chahar, B.S. and Wanke, S.E.:J. Catal.,51, 193(1978).
Yao, H.C., Wynblatt, P., Sieg, M. and Plummer, H.K.: “Material Science Research”, Vol. 14, Plenum, New York (1979).
Yao, H.C., Sieg, M. and Plummer, H.K.:J. Catal.,59, 365(1979).
Baker, R.T.K., Prestridge, E.B. and Garten, R.L.:J. Catal.,59, 293(1979).
Derouane, E.G., Baker, R.T.K., Dumesic, J.A. and Sherwood, R.D.:J. Catal.,69, 101 (1981).
Wang, T. and Schmidt, L.D.:J. Catal.,70, 187 (1981).
Menon, P.G., Depauw, R.P. and Froment, G.F.:Ind, Chem. Prod. Res. Dev.,18, 110 (1979).
Sexton, B.A., Hughes, A.E. and Foger, K.:J. Catal.,77, 85(1982).
Lee, T.J. and Kim, Y.G.: Proc. 3rd Pacific Chem. Eng. Congress, Vol. 2, 250 (1983); Chem. Eng. Commu., To be published.
Martin, G.A., Dutartre, R. and Dalmon, J.A.: React. Kinet. Catal. Lett.,17, 23 (1981).
Ruckenstein, E. and Pulvermacher, B.:J. Catal,29, 224(1973).
Stulga, J.E., Wynblatt, P. and Tien, J.K.:J. Catal.,62, 59 (1980).
Overbury, S.H., Bertrand, B.A. and Somorjai, G.A:Chemical Reviews,75, 510(1975).
Baker, R.T.K.:J. Catal,63, 523(1980).
Vannice, M.A.:J. Catal.,50, 228(1977).
Ruckenstein, E. and Chu, Y. F.:J. Catal.,59, 109 (1979).
Bournonville, J.P. and Martino. G.: “Catalyst Deactivation”, Elsevier, Amsterdam (1980).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lee, T.J., Kim, Y.G. Dispersion of supported platinum catalysts in Oxygen. Korean J. Chem. Eng. 2, 119–124 (1985). https://doi.org/10.1007/BF02697497
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02697497