Abstract: MCM-49 zeolite wa s synthesized with hexamethylenimine as an organic template, by means of hydrothermal crystallization methods. The effect of static condition on the synthesis of MCM-49 was studied. The framework structure and acid property of MCM-49 were investigated by XRD, IR and NH₃-TPD techniq ues. The res ults show that MCM-49 was obtained as a pure phase and with a good yield un der the condition of n(H₂O)∶n(SiO₂)=35~40, n(HMI)∶n(SiO ₂) =0.5, n(SiO₂)∶n(Al₂O₃)= 20～35 for 72　h crystalization. Furthermore, MCM-49 zeolite shows good ca talytic behavior for the skeletal isomerization of 1-butene.

Key words: MCM-49, synthesis, 1-butene, isomerization