Covalently anchored transition-metal salicylaldimine complexes on alpha-titanium phosphate {alpha-TiP.M(salicylaldimine) where M = Co, Cr, Cu and Fe} were synthesized by in situ method and characterized by BET surface area, XRD, SEM, EDX, FTIR, TGA and ICP techniques. Its catalytic activity was tested for the oxidation of cyclohexane under solvent free condition using tert-butyl hydroperoxide as an oxidant. The oxidation of cyclohexane gave cyclohexanol, cyclohexanone and some unidentified products. The activity of heterogeneous catalysts in the oxidation reaction decreased in the order of alpha-TiP.Co(salicylaldimine) > alpha-TiP.Cr(salicylaldimine) > alpha-TiP.Cu(salicylaldimine) > alpha-TiP.Fe(salicylaldimine). The alpha-TiP.Co(salicylaldimine) gave maximum conversion 14.85 % of cyclohexane with 92.13 % selectivity of KA-oil (cyclohexanol + cyclohexanone) in 6 h. The catalyst, alpha-TiP.Co(salicylaldimine) was reused for five cycles without significant loss of catalytic activity. A heterogeneous catalytic system, alpha-TiP.Co(salicylaldimine)/TBHP gave maximum 14.85 % conversion and 92.13 % selectivity for KA-oil in oxidation of cyclohexane. The catalyst can be reused for five cycles. [GRAPHICS]