物理化学学报 >> 2000, Vol. 16 >> Issue (05): 410-415.doi: 10.3866/PKU.WHXB20000507

研究论文 上一篇    下一篇

含过渡金属HMS的合成和催化性能

伏再辉, 陈君华, 陈远道, 向延海, 张鲁西, 尹笃林   

  1. 湖南师范大学精细催化合成研究所,长沙 410081
  • 收稿日期:1999-08-08 修回日期:1999-10-20 发布日期:2000-05-15
  • 通讯作者: 伏再辉

Synthesis,Characterization and Catalytic Properties of Transition Metals Substituted HMS

Fu Zai-Hui, Chen Jun-Hua, Chen Yuan-Dao, Xiang Yan-Hai, Zhang Lu-Xi, Yin Du-Lin   

  1. Institute of Fine Catalysis and Synthesis,Hunan Normal University,Changsha 410081
  • Received:1999-08-08 Revised:1999-10-20 Published:2000-05-15
  • Contact: Fu Zai-Hui

摘要:

利用中性伯胺 (十二胺 )作模板剂 ,合成了过渡金属Cu、 Ti、 Co、或Fe取代的HMS中孔材料 .XRD和FT IR表征表明 ,Cu和Ti能有效地嵌入HMS骨架壁中而不会造成其中孔有序度的下降 ;而Co和Fe的嵌入会明显降低表面活性剂的模板组装作用 ,从而造成中孔结晶有序度的显著下降 .催化实验结果表明 :Cu HMS和Fe Silica是苯酚羟基化的有效催化剂 ,而Ti HMS则是苯乙烯环氧化的有效催化剂.

关键词: 杂原子HMS, 催化氧化, 苯酚羟基化, 苯乙烯环氧化

Abstract:

Transition metals copper, titanium, cobalt and iron substituted hexagonal mesoporous silicas(Cu-HMS, Ti-HMS, Co-HMS and Fe-Silica) were synthesized by using neutral dodecylamine(DDA) as templating agent. XRD and FTIR measurements indicate that the incorporations of Cu and Ti cause no deterioration of the quality of the 100 reflection of mesoporous materials, while the introduction of Co, and especially Fe obviously decrease the assembled effects of templating agent, and deteriorate the quality of the 100 reflection of mesoporous materials seriously. The catalytic tests indicate that Cu-HMS and Fe-Silica are very effective catalysts for the hydroxylation of phenol with 30% H 2O 2 in aqueous solution; and Ti-HMS is an effective catalyst for the epoxidation of styrene with TBHP.

Key words: Hereroatoms substituted HMS, Catalytic oxidation, Phenol hydroxylation, Styrene epoxidation