Abstract
The work is devoted to the study of an oil-drop method for the production of spherical alumina used as a carrier for reforming catalysts with continuous regeneration. The mechanism of transformations occurring during spherical alumina forming by the oil-drop method from mixture of aluminum oxychloride and urotropin used as a gelling agent is proposed. The semi-quantitative composition of spheres after the neutralization stage is calculated on the basis of physicochemical methods of analysis. The possibility of obtaining spherical alumina with different physicochemical properties by varying temperature of the forming and neutralization stage is shown. Increasing the temperature of the neutralization stage leads to a narrower pore size distribution - the formation of more uniform pores with a smallercontribution of pores with a diameter greater than 170 angstroms. The strength of the obtained alumina is significantly affected: the strength increases several times with increasing the temperature of the neutralization stage.
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