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作 者:成岳[1,2] 焦创[1,2] 潘顺龙[3] 邵尤炼[1,2]
机构地区:[1]景德镇陶瓷学院材料学院,江西景德镇333403 [2]江西省先进陶瓷材料重点实验室,江西景德镇333001 [3]扬州大学环境学院,江苏扬州225000
出 处:《精细化工》2012年第1期62-65,104,共5页Fine Chemicals
摘 要:按n(SiO2)∶n(Na2O)∶n(Al2O3)∶n(H2O)=1∶1.5∶0.5∶100加料,在90℃下水热晶化3 h合成NaA微孔分子筛,再按n(SiO2)∶n(NaOH)∶n(CTAB)∶n(H2O)=1∶0.3∶0.3∶90依次添加到NaA微孔分子筛中,于110℃下水热晶化24 h合成NaA/MCM-41微介复合分子筛,并采用XRD、SEM(EDS)和TEM等方法对其进行了表征。吸附阳离子红X-5GN模拟染料废水结果表明,在50 mLρ(阳离子红X-5GN)=20 mg/L的水溶液中,NaA/MCM-41微介复合分子筛的投加量为0.6 g/L、pH=6、振荡时间为60 min时,脱色率可达到96.4%,比NaA分子筛和MCM-41介孔分子筛独自吸附脱色效果要好。NaA of microporous zeolites was prepared by hydrothermal synthesis method with molar ratio of n ( SiO2 ) :n ( Na2 O) : n ( Al2O3 ) : n ( H2 0 ) = 1 : 1.5 : 0. 5 : 100 at 90 ℃ for 3 h, then followed by the addition of chemicals to the microporous zeolite NaA with molar ratio of n (SiO2 ):n( NaOH):n(CTAB) :rt (H20) = 1 : 0. 3 : 0. 3 : 90, composite micro-mesoporous molecular sieve of NaA/MCM - 41 was successfully synthesized at 110℃ for 24 h. The structures of composite materials compared with the mechanical mixture were characterized by means of powder XRD, SEM (EDS) and TEM. The results show that : in 50 mL p ( cationic red X - 5 GN) = 20 mg/L solution, NaA/MCM - 41 micro-mesoporous molecular sieve composite dosage is 0. 6 g/L, pH is 6, the oscillation time is 60 min, the decolorization rate is 96. 4%. Such adsorption decolorization effect is better than that of NaA zeolite and MCM - 41 mesoporous molecular sieve.
关 键 词:NaA/MCM-41微介复合分子筛 两步水热合成 阳离子红X-5GN 吸附性能 水处理技术与环境保护
分 类 号:TB383[一般工业技术—材料科学与工程]
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