介孔Worm-like孔壁晶化制备微孔-介孔分子筛研究

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徐玲,张强,陈衍川,周耿旭,高新,张淼,李丹丹,刘宗瑞.介孔Worm-like孔壁晶化制备微孔-介孔分子筛研究[J].,2018,58(6):559-563

介孔Worm-like孔壁晶化制备微孔-介孔分子筛研究

Study of micro-mesoporous molecular sieves prepared by Worm-like pore-wall crystallization

DOI：10.7511/dllgxb201806002

中文关键词:微孔-介孔分子筛 Worm-like介孔分子筛孔壁晶化催化性能

英文关键词:micro-mesoporous molecular sieve Worm-like mesoporous molecular sieve pore-wall crystallization catalytic properties

基金项目:国家自然科学基金资助项目(21561024, 21661026)；内蒙古自然科学基金资助项目(2015MS0222)；内蒙古自治区纳米碳材料重点实验室项目(MDK2017027).

作者	单位
徐玲,张强,陈衍川,周耿旭,高新,张淼,李丹丹,刘宗瑞

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中文摘要:

采用水热孔壁晶化法，以Worm-like介孔分子筛为硅源，十八水合硫酸铝为铝源，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等表征结果证明，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2，4-二叔丁基苯酚选择性分别超过90%和42%．

英文摘要:

Micro-mesoporous ZSM-5 composite molecular sieves with different silica-alumina ratios are prepared by hydrothermal pore-wall crystallization method using Worm-like mesoporous molecular sieve 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 exhibit that micro-mesoporous ZSM-5 composite molecular sieves are successfully prepared by this method. A series of composite molecular sieves are used to catalyze the tert-butylation of phenol. The reaction conditions are as follows:reaction temperature of 145 ℃,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 are over 90% and 42%, respectively.

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