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- W2018613441 abstract "Abstract The influence of Nafion content (5–80 wt%) in different Nafion/silica composite materials (SAC) as well as the effect of different solvents was studied in liquid phase Friedel-Crafts acylation of 2-methoxynaphthalene (2-MN) with acetic anhydride. The higher the Nafion content, the higher are conversion and selectivity (up to 69%) to the desired product 2-acetyl-6-methoxynaphthalene (2,6-ACMN). Unpolar solvents such as toluene or methylene chloride favour the formation of 1-acetyl-2-methoxynaphthalene (1,2-ACMN) while polar solvents like nitrobenzene or sulfolane promote the 2,6-ACMN formation. Further investigations are related to the influence of metal ions, e.g. Al 3+ , Fe 3+ , Zn 2+ , Cu 2+ and Ag + in ion-exchanged Nafion–silica composite on the formation of the desired 2,6-ACMN. An increase in selectivity to 2,6-ACMN in comparison with the pure acidic Nafion–silica was observed. Zeolites containing Lewis acid sites created by ion-exchange with Fe 3+ , Cu 2+ and Ag + were investigated in the heterogeneously catalysed acylation of methoxynaphthalene for comparison reasons." @default.
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- W2018613441 date "2008-11-15" @default.
- W2018613441 modified "2023-09-27" @default.
- W2018613441 title "The acylation of 2-methoxynaphthalene with acetic anhydride over Nafion/silica composites and BEA zeolites containing Lewis acid sites" @default.
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- W2018613441 doi "https://doi.org/10.1016/j.apcata.2008.07.026" @default.
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