沸石分子筛/微米氧化锆复合颗粒的制备与性能  

Preparation and Properties of Zeolite Molecular Sieve/Micron Zirconia Composite Particles

作　　者：郜玉楠[1] 茹雅芳 袁哲 包顺宇 Gao Yunan;Ru Yafang;Yuan Zhe;Bao Shunyu(School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, Liaoning 110168)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《非金属矿》2019年第3期5-8,共4页Non-Metallic Mines

基　　金：国家自然科学基金(51508342);辽宁省自然科学基金(201602607);沈阳建筑大学科研创新培育计划项(CXPY2017008)

摘　　要：为解决东北地区地下水低温高氟问题,采用试验室自制的沸石分子筛/微米氧化锆(简称Z-MZ)复合吸附颗粒去除水中F-,通过优化工艺条件确定其最佳制备方法,并利用扫描电镜(SEM)、能谱分析(EDS)、比表面积(BET)、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)分析表面物化特性。结果表明,Z-MZ最佳制备条件为:盐酸质量分数8%,微米氧化锆与沸石分子筛的质量比为0.8∶1,制备温度10℃,制备时间10 h。制得的Z-MZ对F-吸附量达到0.35 mg/g,去除率达到93.99%。通过SEM可观察到Z-MZ表面有较多凸起,比表面积为24.606 m2/g,FTIR结果表明,微米氧化锆的特征官能团Zr-O、Zr-OH已存在于该复合颗粒中;XRD分析表明,沸石分子筛在嵌入微米氧化锆微粒后其晶相发生了改变。In order to solve the problem of low temperature and high fluorine in groundwater in northeast China, laboratory-made zeolite molecular sieve/micron zirconia (hereinafter referred to as Z-MZ) composite adsorption particles were used to remove F- in water, and the optimal preparation method was determined by optimizing the process conditions, and scanning was carried out. Electron microscopy (SEM), energy spectrum analysis (EDS), specific surface area (BET), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) were used to analyze surface physicochemical properties. The results showed that the optimal preparation conditions of Z-MZ were: 8% hydrochloric acid concentration, the mass ratio of micron zirconia to zeolite molecular sieve was 0.8∶1, the preparation temperature was 10 ℃, and the preparation time was 10 h. The obtained Z-MZ had an F - adsorption amount of 0.35 mg/g and a removal rate of 93.99%. It can be observed by SEM that there are many protrusions on the surface of Z-MZ, and the specific surface area is 24.606 m^2/g. The FTIR results indicate that the characteristic functional groups Zr-O and Zr-OH of micron zirconia are already present in the composite particles, and XRD indicates zeolite. The molecular sieve changes its crystal phase after embedding the micron zirconia particles.

关 键 词：沸石分子筛 微米氧化锆 优化制备 吸附 氟离子 

分 类 号：TQ424[化学工程]