An acid-basic bifunctional amine-hybrid H-Y zeolite has been hydro-thermally prepared at 416 K with methylamine solution as a modifier. Characterized with X-ray powder diffraction (XRD) and solid state 29Si magic-angle spinning nuclear magnetic resonance (29Si MAS NMR), the obvious increase of cell volume and the appearance of new Si—N bonds in the framework have been observed. The acid-basic properties of the hybrid zeolite, investigated with TG/DTG/DTA and NH3-TPD or CO2-TPD, have been proved to be greatly enhanced. As pre-calcination at different temperatures, the acid amount and basic amount of the modified zeolite increase 3 to 7 times and 1.5 to 26 times respectively, in comparison with those of H-Y zeolite.

Key words: H-Y zeolite, methylamine, hybridation, modification, acid-base bifunctional