Study of processes of deactivation of cracking catalysts by heavy metals and the mechanism of their passivation

Study of processes of deactivation of cracking catalysts by heavy metals and the mechanism of their passivation Научная публикация

Журнал

Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science
ISSN: 2376-8444 , E-ISSN: 0568-5230

Вых. Данные

Год: 1988, Том: 37, Номер: 12, Страницы: 2414-2418 Страниц : 5 DOI: 10.1007/bf00952607

Авторы

Stakheev A.Yu. ^1,2 , Grigoryan A.A. ^1,2 , Shpiro E.S. ^1,2 , Lysenko S.V. ^1,2 , Korol'kov N.S. ^1,2 , Karakhanov E.A. ^1,2 , Minachev Kh.M. ^1,2

Организации

1	N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow
2	M. V. Lomonosov Moscow State University, USSR

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. 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. 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.

Stakheev A.Y. , Grigoryan A.A. , Shpiro E.S. , Lysenko S.V. , Korol'kov N.S. , Karakhanov E.A. , Minachev K.M.
Study of processes of deactivation of cracking catalysts by heavy metals and the mechanism of their passivation
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 1988. V.37. N12. P.2414-2418. DOI: 10.1007/bf00952607 OpenAlex

≡ OpenAlex:

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