以高岭土为原料合成高稳定性介孔分子筛.pdf

硅酸盐学报· 1576 ·2011年以高岭土为原料合成高稳定性介孔分子筛姜廷顺,马孝敬,纪美茹,李艳慧,王国伟,赵谦(江苏大学化学化工学院,江苏镇江 212013) 摘要:以廉价的高岭土和硅酸钠为硅源,用水热法合成了介孔分子筛。采用X射线粉末衍射、Fourier变换红外光谱、热分析、N物理吸附、扫描电子显微镜和透射电子显微镜对样品进行了表征,同时研究了样品的热稳定性和水热稳定性。结果表明:;经900℃焙烧3h或100℃水热处理6d,样品的介孔结构不被破坏,说明样品具有高的热稳定性和水热稳定性。关键词:介孔分子筛;高岭土;水热法;稳定性中图分类号:O643 文献标志码:A 文章编号:0454–5648(2011)10–1576–05 网络出版时间:2011–09–27 13:49:21 KI:11-2310/ 网络出版地址:s/detail/ Synthesis of Stable Mesoporous Molecular Sieve From Kaolin JIANG Tingshun,MA Xiaojing,JI Meiru,LI Yanhui,WANG Guowei,ZHAO Qian (School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China) Abstract: Mesoporous molecular sieve was hydrothermally synthesized using kaolin and sodium silicate as silicon sources. The sam-ples obtained were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, thermal gravimetric?differential scan-ning calorimeter, N2 physical adsorption, scanning electron microscopy (SEM) and transmission electron microscopy, respectively. Also, the thermal and hydrothermal stabilities of the sample were evaluated. The result showed that the long-range and ordered mesoporous molecular sieves with the average pore size of were essfully synthesized. The mesoporous framework was still maintained even after calcination at 900 for 3℃h and hydrothermally