Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6656487 | Fuel Processing Technology | 2018 | 7 Pages |
Abstract
Additives to a zeolite-containing cracking catalyst were synthesized and studied in order to enhance the resistance to the poisoning effect of nitrogen compounds (in particular indole) upon cracking of n-undecane as the model FCC hydrocarbon. The additives were represented by acid-activated clays and mixed oxides. The activation of clays in the catalyst by 5% sulfuric acid solutions was shown to enhance the resistance to nitrogen. The introduction of Mg, Al - mixed oxides in the catalytic system in the amount of 10Â wt% increased its activity and resistance to indole. The highest resistance was observed for the systems containing magnesiumâaluminum oxides with a Me2Â + to Me3Â + molar ratio equal to 0.5: 1. Cobalt modification of these mixed oxides enhanced the activity and nitrogen resistance of the cracking catalysts. Use of such nitrogen-resistant catalysts will allow cracking of heavy raw materials.
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Authors
T.V. Bobkova, O.V. Potapenko, V.P. Doronin, T.P. Sorokina,