文章摘要
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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