| 以季磷化合物为模板剂合成超大孔分子筛ITQ-33 |
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| 引用本文： | 钱昆,宋晓伟,徐达,李激扬.以季磷化合物为模板剂合成超大孔分子筛ITQ-33[J].高等学校化学学报,2012,33(10):2141-2145. |
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| 作者姓名： | 钱昆 宋晓伟 徐达 李激扬 |
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| 作者单位： | 吉林大学无机合成与制备化学国家重点实验室, 长春 130012 |
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| 摘 要： | 以四丁基氢氧化磷为模板剂, 在中温水热条件下, 利用浓溶胶法合成了具有一维18元环孔道的含铝硅锗酸盐分子筛ITQ-33. 系统研究了ITQ-33的合成条件, 并利用原位变温X射线衍射(XRD), 扫描电子显微镜(SEM), 固体核磁共振波谱(NMR), 电感耦合等离子体发射光谱(ICP), 氮气吸附-脱附程序升温脱附(TPD), 热重(TG)及元素分析等手段对其结构、 稳定性及催化性能进行了表征. 结果表明, 以季磷化合物为模板剂可以合成含铝的ITQ-33纯相, 产物具有较高的热稳定性, 其骨架结构可以稳定至400℃以上, 煅烧后的ITQ-33具有Lewis酸位点, 在酸催化方面有潜在的应用价值.
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| 关 键 词： | 分子筛ITQ-33 水热合成 超大孔分子筛 四丁基氢氧化磷 |
| 收稿时间： | 2012-05-28 |
Synthesis and Characterization of Extra-large 18-Ring Zeolite ITQ-33 Using Phosphonium as Structure-directing Agent |
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| QIAN Kun
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SONG Xiao-Wei
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XU Da
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LI Ji-Yang.Synthesis and Characterization of Extra-large 18-Ring Zeolite ITQ-33 Using Phosphonium as Structure-directing Agent[J].Chemical Research In Chinese Universities,2012,33(10):2141-2145. |
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| Authors: | QIAN Kun SONG Xiao-Wei XU Da LI Ji-Yang |
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| Institution: | State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China |
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| Abstract: | Extra-large pore zeolite ITQ-33 with 18-rings was prepared using tetrabutylphosphonium hydroxide as structure-directing agent. In situ temperature dependent XRD analysis showed that the framework structure of the as-synthesized product maintains up to 400℃. Its adsorption character was confirmed by N2 adsorption. The influence of synthetic factors in the synthesis of ITQ-33 was studied. The tetrahedrally coordinated Al atoms in the framework lead to the Lewis acid sites. |
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| Keywords: | Zeolite ITQ-33 Hydrothermal synthesis Extra-large pore zeolite Tetrabutyl phosphonium hydroxide |
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