| 以四乙基氢氧化铵为模板并通过转晶法合成高硅铝比的SSZ-13沸石分子筛 |
| Synthesis of SSZ-13 Zeolite with High Molar Ratio of SiO2 to Al2O3 by Crystal Transformation Method Using Tetraethyl Ammonium Hydroxide as Template |
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| 摘要: 使用四乙基氢氧化铵为有机模板剂，以低硅铝比（nSiO2/nAl2O3）的Y分子筛为铝源，通过转晶法制备结晶度良好的SSZ-13沸石分子筛。从凝胶配比方面考察了不同原料组成对分子筛合成的影响，并通过X射线衍射（XRD）、扫描电子显微镜（SEM）及电感耦合等离子体（ICP）表征水热反应过程中的物相、形貌、硅铝比等变化，揭示分子筛合成过程。氨选择性催化还原（NH3-SCR）反应显示该分子筛具有优异的催化活性，为其工业上的广泛应用提供了可能性。 |
| 关键词: SSZ-13沸石 四乙基氢氧化铵 Y分子筛 NH3-SCR |
| 基金项目: 上海健康医学院种子基金项目（No.E3-0200-20-201007-30）资助。 |
| Abstract: SSZ-13 zeolite with good crystallinity was prepared by using tetraethyl ammonium hydroxide as organic template and Y zeolite with low molar ratio of SiO2 to Al2O3 (nSiO2/nAl2O3) as aluminum source. The effect of different compositions of pre-gels on the synthesis of SSZ-13 was investigated, and the crystallinity, morphology and nSiO2/nAl2O3in the process of hydrothermal reaction were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and inductively coupled plasm (ICP) to reveal the synthesis mechanism of SSZ-13. NH3 selective catalytic reduction (NH3-SCR) of NOx shows that the SSZ-13 catalysts with Cu loading (mass fraction of 3%) had excellent catalytic activity, which provides the possibility for its wide application in industry. |
| Keywords: SSZ-13 zeolite tetraethyl ammonium hydroxide Y zeolite NH3-SCR |
| 投稿时间：2020-12-13 修订日期：2021-01-07 |
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| 刘效艳,王开学.以四乙基氢氧化铵为模板并通过转晶法合成高硅铝比的SSZ-13沸石分子筛[J].无机化学学报,2021,37(4):728-734. |
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