Pure MFI and MEL zeolites were obtained at 170°C from clear solutions of general composition SiO 2 : 0.0004 Al 2 O 3 : 0.30 Na 2 O : aTAABr (or TAAOH) : 40H 2 O with a = 0.03 -0.16 and TAA = TEA, TPA or TBA. The physicochemical characteristics (XRD, SEM, d.t.g., d.t.a., FT i.r., and multi-n.m.r.) allow one to compare the products obtained from the clear solution with those obtained from a hydrogel.