球形TiSAPO-34分子筛的合成、表征及其对亚甲基蓝的吸附性能
Synthesis, Characterization and Adsorption Property for the Methylene Blue of the Sphere-like TiSAPO-34 Molecular Sieve
作者单位E-mail
罗五魁 宁德师范学院化学与材料学院, 福建省特色生物化工材料重点实验室, 宁德 352100 luowukui222@163.com 
陈峰 宁德师范学院化学与材料学院, 福建省特色生物化工材料重点实验室, 宁德 352100  
颜桂炀 宁德师范学院化学与材料学院, 福建省特色生物化工材料重点实验室, 宁德 352100  
白云山 陕西师范大学化学与化工学院, 西安 710062  
摘要: 利用水热法合成了TiSAPO-34分子筛,通过扫描电子显微镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、N2吸附-脱附、紫外-可见漫反射吸收光谱(UV-Vis DRS)、热重(TG)等方法对其形貌、物相组成、孔径等进行表征。以亚甲基蓝的水溶液模拟污染物评价TiSAPO-34分子筛吸附性能,考察了钛的掺杂量及样品再生后对亚甲基蓝吸附性能的影响。结果表明:样品形貌为球形,是一种微孔分子筛,具有较好的热稳定性。样品中部分Ti原子成功进入骨架,仍保持了SAPO-34分子筛的骨架结构。在190℃晶化24 h得到的样品吸附性能较好,0.3 g样品吸附1 h对0.01 g·L-1亚甲基蓝的水溶液模拟污染物吸附率达到80%。
关键词: 微孔材料  分子筛  合成  吸附
基金项目: 国家自然科学基金(No.21473096)、福建省教育厅中青年项目(No.JAT160536)和宁德师范学院科研项目(No.FJKL-FMBI201710、2016Q47)资助。
Abstract: The TiSAPO-34 molecular sieves have been successfully synthesized via a facile hydrothermal method. Scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), N2 adsorption-desorption, UV-Vis diffuse reflectance spectra (UV-Vis DRS) and thermogravimetric (TG) have been employed to determine the properties of the samples. The TiSAPO-34 molecular sieves could be served as efficient adsorbents for adsorbing a typical contaminants, methylene blue (MB) from water. Moreover, the doped amount of titanium, the stability and recyclability of the catalysts have been investigated in detail. The results revealed that the resulting samples were the spherical microporous molecular sieve, which with good thermal stability. Interestingly, a certain amount of Ti atoms could embed the matrix of SAPO-34 molecular sieves successfully, and the skeleton structure of SAPO-34 molecular sieves still maintained. Importantly, the samples synthetic after crystallization at 190℃ for 24 h exhibited the optimal adsorption performance for the adsorption of MB, giving an adsorption rate of 80% after 1 hour.
Keywords: microporous materials  molecular sieve  synthesis  adsorption
投稿时间:2018-10-29 修订日期:2019-01-20
摘要点击次数:  103
全文下载次数:  143
罗五魁,陈峰,颜桂炀,白云山.球形TiSAPO-34分子筛的合成、表征及其对亚甲基蓝的吸附性能[J].无机化学学报,2019,35(4):629-634.
查看全文  查看/发表评论  下载PDF阅读器
Support information: