改性条件对水热超稳分子筛DASY2．0结构的影响  

THE INFLUENCE OF MODIFYING CONDITIONS ON THE STRUCTURE OF ULTRA-STABLE ZEOLITE DASY 2.0 PREPARED BY HYDROTHERMAL METHOD

作　　者：周明琴 周岩[2] 杨凌[2] 周灵萍[3] 

机构地区：[1]河南省信阳市第二高级中学,河南信阳464100 [2]中国石化催化剂齐鲁分公司,山东淄博255336 [3]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2008年第B10期324-327,共4页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：对工业用水热超稳分子筛DASY2．0进行酸处理改性。分别考察了酸浓度、酸处理时间及酸处理液温度等改性条件对DASY2．0分子筛的结构的影响规律，重点考察了改性条件对分子筛中所含的总铝摩尔分数与骨架铝摩尔分数的影响规律及对分子筛的结晶度的影响。结果表明，酸浓度对分子筛的结构影响比较大，在较低的酸浓度下，延长处理时间或升高处理温度对分子筛的结构影响不大。The ultra-stable zeolite DASY 2.0 prepared by hydrothermal method in commercial scale was modified by acid. The effect of the experimental conditions including acid concentration, treatment time and temperature on the structure of ultra-stable zeolite DASY 2.0 were investigated in detail. The results show that acid concentration has strong influence on the structure of DASY 2.0 zeolite, and the treatment time and temperature have less influence on the structure of DASY 2.0 zeolite under lower acid concentration.

关 键 词：分子筛 水热超稳 改性 结晶度 

分 类 号：O643[理学—物理化学]