Effects of the concentration of di-n-propylamine (DPA) in gel on the physicochemical properties and the catalytic performances of the alkylation of naphthalene with methanol as-synthesized SAPO-11 zeolites have been studied. Products were characterized using XRD, SEM, N2 adsorption-desorption, NH3-TPD, FT-IR and 29SiMAS. The results indicated that different template contents had strong influence on the pore structure, the Si distribution and thus the acidity of SAPO-11. The sample prepared at DPA:Al2O3 ratio of 1.5 (SAPO-11-1.5) possessed large surface area and pore volume, which was 215 m2٠g-1和0.173 cm3٠g-1, respectively, and small Si domains, large amount of Si (nAl) (0