利用粉煤灰合成Na-X沸石的研究  

SYNTHESIS OF Na-X ZEOLITE FROM COAL FLY ASH

作　　者：崔杏雨[1] 陈树伟[2] 尹辉[1] 谭建冬[1] 李瑞丰[2] 

机构地区：[1]太原理工大学精细化工研究所 [2]太原理工大学化学化工学院,太原副教授030024

出　　处：《煤炭转化》2009年第4期85-88,共4页Coal Conversion

基　　金：山西省科技攻关项目(20090311078);山西省自然科学基金资助项目(2007011032);太原市技术创新计划项目(0802015)

摘　　要：以太原某热电厂粉煤灰为原料,采用碱熔融法,考察了碱度、晶化温度和晶化时间对合成Na-X沸石的影响.结果表明,在粉煤灰/NaOH为1∶1.2(摩尔比),熔融温度550℃,NaOH浓度为3.75mol/L(即加水40mL),晶化温度90℃,晶化时间6h的条件下合成纯度较高的Na-X沸石;粉煤灰通过碱熔融法合成的Na-X沸石质量明显优于传统水热法.Na-X zeolites were successfully synthesized using the coal fly ash from a ther- too-electric plant in Taiyuan by fusion method. The effects of treatment conditions, including NaOH concentration, operating temperature and hydrothermal reaction time, were investigated. The optimal synthetic conditions for Na-X were found to be as follows： ash/NaOH ratio is 1 ： 1.2, fusion temperature is 550℃ ,NaOH concentration is 3.75 mol/L （addition of 40 mL H2O）, reaction temperature is 90 ℃ and reaction time is 6 h. The synthesizing Na-X zeolite by fusion method has higher purity and better crystallinity than that by conventional hydrothermal method.

关 键 词：粉煤灰 Na—X沸石 碱熔融法 水热合成法 

分 类 号：TQ330.385[化学工程—橡胶工业] X770.5[环境科学与工程—环境工程]