Abstract: Using acetic acid as the complexing agent of ferric iron, the three zeolites P with different iron levels were synthesized by hydrothermal synthesis method according to the follow producer:the mixture with mole ratio of 5Na_2O∶Al_2O_3∶8SiO_2∶xFe~(3+)∶(116-156)H_2O, stirring for 3 h at room temperature, and then crystallizing for 20 h at 100 ℃ in the stainless steel reaction pot. The crystal structure of the samples was characterized by XRD,FT-IR and SEM.The results suggest that the iron-doped zeolites P had the same structure as that of the pure zeolite P, their crystalline sizes were homogeneous and had the trend of increasing. Also the adsorption properties to fluorinion and lead ions in water had been studied, the iron-doped zeolites P can raise the adsorbing capacity of F- to 4.98 mg/g, but did not improve the adsorption ability to Pb and K ions.

Key words: Using acetic acid as the complexing agent of ferric iron, the three zeolites P with different iron levels were synthesized by hydrothermal synthesis method according to the follow producer:the mixture with mole ratio of 5Na_2O∶Al_2O_3∶8SiO_2∶xFe~(3+)∶(116-156)H_2O, stirring for 3 h at room temperature, and then crystallizing for 20 h at 100 ℃ in the stainless steel reaction pot. The crystal structure of the samples was characterized by XRD,FT-IR and SEM.The results suggest that the iron-doped zeolites P had the same structure as that of the pure zeolite P, their crystalline sizes were homogeneous and had the trend of increasing. Also the adsorption properties to fluorinion and lead ions in water had been studied, the iron-doped zeolites P can raise the adsorbing capacity of F- to 4.98 mg/g, but did not improve the adsorption ability to Pb and K ions.