Alkylation reactions of potassium carboxylates supported on alumina: comparison between ball-milling, impregnation and dispersion procedures

Potassium carboxylate alkylation by n-bromooctane on neutral alumina in "dr y media" under microwave irradiation was studied for different methods of p reparation of salt-support powder. Mechanical milling and impregnation tech niques led to equivalent yields, much higher than those obtained through di spersion. The first method avoids using solvents and subsequent drying of p owders. Crystallographic and granulometric studies of the resulting powders were performed to ascertain the results.