Abstract
Catalytic properties of Mn and La oxides that are acceptors of CO2 in regeneration of zeolite-containing cracking catalysts in the presence of carbon dioxide have been studied. Regeneration rate of coked catalysts by carbon dioxide in the presence of Mn and La significantly increases. During regeneration, coke oxidation to Co and redistribution of hydrogen in carbonaceous fragments take place to produce methane and hydrogen. Activation energy of methane and hydrogen formation equals 46 kcal/mol. Variation of activation energy with temperature is typical for Co formation.
Abstract
Установлено, что в присутствии Mn и La скорость регенерации закоксованных катализаторов диоксидом углерода существенно возрастает. При регенерации протекют реакции окисления кокса до CO и перераспределения водорода в углеродистых фрагментах с образованием метана и водорода. Энергия активации образования метана и водорода составляет 46 ккал/моль. Для образования CO характерно изменение энергии активации с ростом температуры.
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References
A.Kh. Mamedov: Doctoral thesis, Baku 1991.
A.Kh. Mamedov, S.R. Mirzabekova, Sh.A. Nuriev, V.S. Aliev: Neftekhimiya,5, 630 (1991).
A.V. Sklyarov, T.M. Dangyan, M.U. Kislyuk, O.V. Krylov: Izv. Acad. Nauk SSSR,12, 2682 (1977).
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Mirzabekova, S.R., Farkhadova, G.T., Mamedov, A.K. et al. Some peculiarities in regeneration of zeolite-containing cracking catalysts by carbon dioxide. React Kinet Catal Lett 48, 225–231 (1992). https://doi.org/10.1007/BF02070089
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DOI: https://doi.org/10.1007/BF02070089