Co-MCM-41介孔分子筛的水热合成与稳定性

中国有色金属学报, 2009, 19(1): 189-194.

Co-MCM-41介孔分子筛的水热合成与稳定性

赵谦 ^1, , 胡晓笑 ^2, , 张蓉仙 ^3, , 李梅 ^4, , 姜廷顺 ^5,

1.江苏大学,化学化工学院,镇江,212013

2.江苏大学,化学化工学院,镇江,212013

3.江苏大学,化学化工学院,镇江,212013

4.江苏大学,化学化工学院,镇江,212013

5.江苏大学,化学化工学院,镇江,212013

基金项目: 江苏大学高级人才科研启动基金(JDG2006074) 江苏省高校自然科学基金(04KJD130040)

关键词： Co-MCM-41介孔分子筛 , 水热法 , 合成 , 稳定性 , 表征

Stability and hydrothermal synthesis of Co-MCM-41 mesoporous molecular sieves

以硅酸钠、氯化钴等无机盐为原料,通过水热法合成含有不同Co含量的六方介孔分子筛Co-MCM-41.采用X射线粉末衍射、红外光谱、等离子发射光谱、程序升温还原、透射电子显微镜和N2吸附-脱附等技术对样品的物化性能进行表征,研究所合成的Co-MCM-41的稳定性.研究结果表明:在水热条件下合成4种不同Co含量的Co-MCM-41介孔分子筛,其比表面积为809.8～1257.2 m2/g,平均孔径为2.7～2.8 nm.随着介孔分子筛中Co含量的增加,介孔分子筛的比表面积、孔体积变小,介孔有序性变差.所合成的含Co介孔分子筛经750 ℃焙烧3 h后介孔结构被破坏,经100 ℃水热处理5 d后样品虽然具有介孔结构,但介孔有序性差.

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