采用水热合成法,按照摩尔比5Na_2O∶Al_2O_3∶8SiO_2∶xFe~(3+)∶(116～156)H_2O配料,草酸为铁离子的络合剂,经过室温搅拌成胶,100 ℃下于不锈钢反应釜中晶化20 h,合成了三种掺杂铁量不同的P型分子筛.利用XRD、FT-IR和SEM对产物进行了表征,分析结果表明铁掺杂P型分子筛与纯P型分子筛结构相同,其晶体粒度均匀且稍有增大;以合成的分子筛作为吸附剂考察了合成产物对水中氟离子、铅离子和钾离子的吸附性能,铁掺杂P型分子筛对氟离子的吸附性能明显增加,达到4.98 mg/g,而对铅离子和钾离子的吸附性能没有促进作用.
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.
参考文献
| [1] | 吴鹏,刘月明,何鸣元.杂原子分子筛的新型制备方法及其催化性能的研究[J].石油学报（石油加工）,2006(z1):18-21. |
| [2] | 孙长勇,宋一兵,叶飞,余林,郭锡坤.Fe-ZSM-5杂原子分子筛的合成与表征[J].光谱实验室,2003(03):448-451. |
| [3] | 鞠雅娜,沈志虹,朱俊哲,王秀林.FeY分子筛的合成、表征及其加氢裂化活性[J].石油化工,2006(07):629-632. |
| [4] | Flaviano Testa;Luigi Pasqua;Fortunato Crea;Rosario Aiello;Karoly Lazar;Fal Fejes;Patrick Lentz;Janos B. Nagy .Synthesis of Fe-MFI zeolites in fluoride-containing media[J].Microporous and Mesoporous Materials,2003(1):57-72. |
| [5] | Binbin Fan;Weibin Fan;Ruifeng Li .Fe-containing Y as a host for the preparation of a ship-in-a-bottle catalyst[J].Journal of molecular catalysis, A. Chemical,2003(1/2):137-144. |
| [6] | 杜立春,傅军,朱崇业,李全芝.Fe（Ⅲ）Y型沸石的制备及表征[J].复旦学报（自然科学版）,2000(04):368-373. |
| [7] | 张爱民;鲍书林;须沁华 .二次合成FeY 分子筛的表面酸性[J].催化学报,1997,18(01):72-74. |
| [8] | 张金峰,王思晨,李瑞丰.洗涤助剂P型分子筛的合成与性能表征[J].应用化工,2006(12):946-948. |
| [9] | 曹吉林,谭朝阳,孟凡斌,姬荣琴.膨润土与碳酸钠反应制P型分子筛的初步研究[J].河北工业大学学报,2003(01):54-57. |
| [10] | Ji-lin Cao;Xiu-Wu Liu;Rui Fu .Magnetic P zeolites: Synthesis, characterization and the behavior in potassium extraction from seawater[J].Separation and Purification Technology,2008(1):92-100. |
| [11] | 翟双猛,费英伟,杨树锋,夏斌.NaAlSiO4高温高压相变及产物的X射线衍射研究[J].矿物学报,2005(01):45-49. |
| [12] | 任永利,刘国柱,米镇涛.杂原子进入分子筛骨架结构的波谱学判据[J].化学通报,2004(06):433-438. |
| [13] | 董岁明,张瑞详,李昭存.改性沸石脱氟剂去除水中氟离子的实验研究[J].长安大学学报（建筑与环境科学版）,2004(04):75-77. |
| [14] | R.A.Kleiv;K.L.Sandvik .Using tailings as heavy metal adsorbents-the effect of buffering capacity[J].Minerals Engineering,2000(7):719-728. |
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