悬浮态纳米ZSM-11沸石的合成及表征  

SYNTHESIS AND CHARACTERIZATION OF NANOSIZED ZSM-11 ZEOLITE

作　　者：王小莉[1] 吴岚[1] 李玉平[3] 张伟[1] 闫子春[1] 窦涛[1,2] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024 [2]中国石油大学催化重点实验室,北京102249 [3]太原理工大学教育部和山东省煤科学与技术重点实验室,山西太原030024

出　　处：《石油学报（石油加工）》2006年第B10期228-230,共3页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：在TEOS-TBAOH～C2H3OH—NaOH—H2O体系中低温合成悬浮态纳米ZSM—11沸石，并考察了原料配比和晶化时间对其粒径及结晶度的影响。采用XRD、FT—IR、N2吸附、动态光散射（DLS）粒度分析等方法对合成纳米ZSM—11沸石的结构、粒径、BET比表面积、孔容、孔径等物理化学性能进行了表征。X射线粉末衍射测定结果表明，该合成产物具有典型的ZSM—11骨架结构和纳米尺寸。红外光谱显示，所合成产物具有典型的ZSM—11型沸石分子筛的骨架振动，且其结晶度接近100%。粒度分布数据表明，合成的产物具有均一粒径，并且在原料中加入碱或乙醇能有效减小晶粒尺寸，合成出粒径在10nm以内的ZSM-11沸石。N2吸附结果表明，纳米ZSM-11沸石的BET比表面积远大于微米级ZSM-11沸石．Nanosized ZSM-11 zeolite was synthesized in TEOS-TBAOH-C2H5OH-NaOH-H2O system at low temperature. The effects of molar ratio of the raw materials and crystalline conditions on the synthesis of nanosized ZSM-11 zeolite were investigated in detail. XRD, FT-IR, N2 adsorption, dynamic light scattering （DLS） techniques were used to characterize the structure, particle size, BET surface area, pore volume, pore diameter and other physico-chemical properties of nanosized ZSM-11 zeolite. The X-ray powder diffraction patterns showed the typical ZSM-11 structural characteristics and nanosize. The FT-IR indicated that the samples had the typical vibration of ZSM-11 zeolite and the crystallinity of the product was close to 100%. The DLS data showed that the particle size distribution was mono-disperse. The particle size could be effectively diminished when NaOH or C2 H5OH was added into the raw materials and controlled in 10 nm. BET surface area of nanosized ZSM-11 zeolite was much larger than that of micron ZSM-11 zeolite.

关 键 词：ZSM-11 纳米尺寸 低温合成 乙醇 氢氧化钠 

分 类 号：O643.36[理学—物理化学]