以煤矸石为原料合成Y型沸石及其吸附性能的探究

以固体废物煤矸石为原料，采用“高温焙烧活化 碱熔融 碱溶 陈化 晶化”水热反应体系，根据Y型沸石相应的结构特征，通过对各阶段反应条件的探究及对SiO₂/Al₂O₃的摩尔比的控制，合成Y型沸石，其结构、形貌和性能经X-射线荧光光谱、X-射线衍射、扫描电子显微镜、Fourier红外光谱和氮吸附仪分析表征。并将Y型沸石应用于氨氮废水的处理，对其吸附性能进行研究。结果表明，在活化温度800 ℃，碱熔融温度850 ℃，碱熔融质量比（Na₂CO₃/煤矸石）为1.0，碱溶NaOH溶液浓度为3 mol·L^-1,于60 ℃陈化12 h，晶化温度105 ℃，晶化时间6 h条件下，硅铝比为6~8，制得的Y型沸石结晶度最高（93％），对氨氮废水的去除率在40 min内达到88.2%。

Synthesis and Adsorption Performance of Mesoporous Zeolite-Y

Zeolite Y was synthesized by "activated by high temperature-alkali fusion-alkali dissolution-aging-crystallize" hydrothermal system from coal gangue via the condition of each stage and the control of SiO2/Al2 O3 .The as-fabricated samples were characterized by X-ray fluorescence spectrum ( XRF) , X-ray diffraction( XRD) , scanning electron microscopy ( SEM) , Fourier transform infrared spectrosco-py(FTIR) and N2 adsorption-desorption.Zeolite Y was applied to the adsorption of ammonia nitrogen wastewater .The results showed that under the activation temperature of 800 ℃ and the Alkali fusion temperature of 850 ℃, mass ratio of Na2 CO3 and coal gangue was 1.0, concentration of NaOH was 3 mol· L-1 , aging 12 h at 60 ℃, crystallization at 105 ℃for 6 h, SiO2/Al2 O3 ratio for 6～8, genera-ted the highest zeolite Y crystallinity ( 93％) .The removal rate of ammonia nitrogen wastewater was 88 .2％in 40 minutes .