Abstract
The textural and acid–base characteristics of initial alumina and alumina modified with acetic acid at different concentrations (from 0.83 to 17.4 mol/L) were studied. It was found that treatment with acetic acid did not influence on the texture characteristics and phase composition of the supports. According to the IR-spectroscopic data on adsorbed CO, an increase in the concentration of medium-strength Lewis acid sites and an increase in the total acidity of the modified supports were observed, as compared with those of the initial alumina. Among the Pt‒Re systems, a catalyst based on the support treated with acetic acid at a concentration of 1.67 mol/L exhibited the highest activity in n-heptane reforming due to an optimal composition of the acid sites of the support.
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