Conclusions
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1.
The degree of reduction of nickel on RSG-6Ts cracking catalyst is significantly lower than on SiO2, and the dispersion of the metal on RSG-6Ts is significantly higher, due to the reaction of nickel with the aluminosilicate matrix.
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2.
The antimony is more uniformly distributed on the surface than the nickel, forming a monomolecular layer or small islets of Sb2O5. No reduction of antimony was detected on brief treatment in H2 at 550°C.
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3.
The increase in the “metal stability” of the catalysts in the presence of antimony is due to a decrease in the dispersion of Ni0 and perhaps by modification if its properties caused by the presence of a monolayer of antimony oxide on the Ni/SiO2-Al2O3 interface.
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Literature cited
R. G. Meisenheimer, J. Catal.,1, 356 (1962).
M. J. Dreiling and A. M. Schaffer, J. Catal.,56, 130 (1979).
G. D. Parks, A. Schaffer, M. J. Dreiling, and C. M. Shiblom, Abstract of Papers, 179th ACS Nat. Meeting (Houston, Texas), Washington (1980), p. 334.
S. V. Lysenko, N. N. Abakushina, V. A. Dolgikh, et al., Vestn. Moscow State Univ., Ser. 2, Khim.,26, 505 (1985).
A. Yu. Stakheev, A. A. Grigoryan, E. S. Shpiro, et al., Izv. Akad. Nauk SSSR, Ser. Khim., 2678 (1988).
W. Crunert, R. Feldhaus, K. Anders, et al., J. Electron Spectrosc.,40, 187 (1981).
V. I. Nefedov and V. T. Cherepin, Physical Methods of Investigation of the Surface of Solids [in Russian], Nauka, Moscow (1983), p. 270.
A. Yu. Stakheev, E. S. Shpiro, and Kh. M. Minachev, Poverkhnost', No. 10, 141 (1987).
S. R. Morrison, The Chemical Physics of Surfaces, Plenum Press, New York (1977).
F. P. J. Kerkhof and J. A. Moulin, J. Phys. Chem.,83, 1612 (1978).
D. R. Penn, J. Electron Spectrosc. Relat. Phenom.,9, 29 (1976).
J. W. E. Coenen, in: D. Delmon, P. Grande, P. Jacobs, and G. Poncelet (eds.), Scientific Bases for the Preparation of Heterogeneous Catalysts, Elsevier, Amsterdam (1979), pp. 89–101.
A. A. Slinkin, M. S. Kharson, V. G. Pimenov, et al., Kinet. Katal.,27, 1433 (1986).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2684–2689, December, 1988.
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Stakheev, A.Y., Grigoryan, A.A., Shpiro, E.S. et al. Study of processes of deactivation of cracking catalysts by heavy metals and the mechanism of their passivation. Russ Chem Bull 37, 2414–2418 (1988). https://doi.org/10.1007/BF00952607
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DOI: https://doi.org/10.1007/BF00952607