Sol-gel method have been used to convert metal carbonates, oxides and nitrates into corresponding acetate precursors for gel formation. About 90% volume of high T-C superconducting phase (2223) has been obtained for oxide-carbonate system. This value is comparable to that obtained from pure acetates (91% volume). However, the nitrates-＇derived sample has a high-T-C phase of 88% due to poor conversion of nitrates to acetates as observed by the infrared spectra. The dominance of high-T-C phase was observed in all systems as evidenced in the single step transition of R-T curves. Hence the percentage of the high-T-C phase dictates the value of T-C(R = 0) as 104 K, 103 K and 99 K, for oxide-carbonate, pure metal acetates and nitrates system respectively.