Abstract

The Friedel-Crafts acetylation of 2-methoxynaphthalene (2-MN) in the liquid phase has been studied over three H-beta zeolite catalysts, featuring the same composition and acidity, but exhibiting different textural characteristics. The various catalysts led to significantly different yields of acetylated products, 1-acetyl-2-methoxynaphthalene (1-Ac-2-MN) and 2-acetyl-6-methoxynaphthalene (2-Ac-6-MN). On the basis of the relationship between the product yields and the textural characteristics of the samples, the formation of the two acetylated products has been assumed to occur at different locations: inside the micropores in the case of 2-Ac-6-MN and on the outer surface of the crystals in the case of 1-Ac-2-MN.

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