| 离子热合成微球方钠石 |
| Ionothermal Synthesis of Sodalite Microspheres |
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| 摘要: 在1-甲基-3-乙基咪唑溴盐离子液体([emim]Br)中合成了球形的方钠石分子筛，分别通过X射线衍射仪(XRD)和扫描电子显微镜(SEM)等表征手段对产物进行了表征。结果表明，在反应物料配比相同的条件下，离子热合成有利于球形方钠石结构的形成。在反应物料中nNa2SiO3·9H2O/nNaAlO2为1.1(即nSiO2/nAl2O3=2.2)和5.0时(即nSiO2/nAl2O3=10)时，离子热合成得到了粒径为0.2和1.4 μm的球形方钠石分子筛，而水热合成分别得到了X型分子筛和一种未知结构的产物。 |
| 关键词: 离子热 离子液体 方钠石 球形 |
| 基金项目: |
| Abstract: Sodalite (SOD) with spherical shapes has been successfully synthesized by a simple ionothermal route using an imidazolium salt 1-ethyl-3-methyl imidazolium bromide ([emim]Br). By controlling experimental conditions, sodalite spheres with core diameter 0.2 and 1.4 μm could be synthesized. The products were characterized by X-ray diffraction (XRD) and scanning electron microcopy (SEM). For comparison, reagents with molar ratio of Na2SiO3·9H2O/NaAlO2 at 1.1 (nSiO2/nAl2O3=2.2) and 5.0 (nSiO2/nAl2O3=10) were treated under hydrothermal conditions, resulting in zeolite X and an unknown structure, respectively. |
| Keywords: ionothermal ionic liquids sodalite spherical shape |
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| 马英冲,王少君,宋 宇,徐云鹏,田志坚,余加祐,林励吾.离子热合成微球方钠石[J].无机化学学报,2010,26(11):1923-1926. |
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