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| 介孔分子筛Worm-like孔壁晶化制备微孔-介孔 |
| Preparation, characterization of micor-mesoporous ZSM-5 molecular sievesby Worm-like meosoporous pore-wall crystallized |
| 投稿时间：2018-05-27 修订日期：2018-07-02 |
| DOI： |
| 中文关键词: 微孔-介孔复合分子筛 介孔分子筛Worm-like 孔壁晶化 催化性能 |
| 英文关键词: micro-mesoporous molecular sieve mesoporous Worm-like pore-wall crystallization catalytic properties |
| 基金项目:国家自然科学(21561024, 2161026),内蒙古自然科学(2015MS0222),内蒙古自治区纳米碳材料重点实验室项目(MDK2017027)联系人简介刘宗瑞(1954- ),男,教授,主要从事多相催化及功能材料的研究. Email: tlxuling1979@163.com. |
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| 中文摘要: |
| 采用水热晶化法,以Worm-like介孔材料为硅源,十八水合硫酸铝为铝源,进行孔壁晶化制备不同硅铝比微孔-介孔ZSM-5复合分子筛,XRD、FT-IR、N2吸附脱附、TEM等手段进行表征证明,用此方法成功制备出一系列微孔-介孔ZSM-5复合分子筛。将一系列复合分子筛用于催化苯酚叔丁基化反应,在反应温度145℃、n(苯酚)：n(叔丁醇)= 1 : 2.5的条件下,硅铝比为15、25的复合分子筛有较强的催化活性,苯酚转化率和2,4-二叔丁基苯酚的选择性分别超过90 %和40 %。 |
| 英文摘要: |
| Micro-mesoporous ZSM-5 composite molecular sieves with different silica-alumina ratio was prepared by hydrothermal pore-wall crystallization method using Worm-like mesoporous materials as the silicon source and aluminum sulfate 18-hydrate as the aluminum source. The results of XRD, FT-IR, N2 adsorption-desorption, TEM and other means exhibited that micro-mesoporous ZSM-5 composite molecular sieves were successfully prepared by this method. A series of composite molecular sieves were used to catalyze the tert-butylation of phenol. The reaction conditions were as follows: reaction temperature of 145°C, n (phenol) : n (tert-butanol) = 1: 2.5. The catalysts with ratio of silica to alumina of 15 and 25 exhibit high catalytic activity. The phenol conversion rate and selectivity to 2,4-di-tert-butylphenol were over 90% and 40%, respectively. |
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