کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
44459 | 46030 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and catalysis of tungsten oxide in hexagonal mesoporous silicas (W-HMS) Synthesis and catalysis of tungsten oxide in hexagonal mesoporous silicas (W-HMS)](/preview/png/44459.png)
Hexagonal mesoporous silicas containing tungsten complexes have been synthesized through the condensation of tetraethoxysilane templated by an amphiphilic diblock copolymers modified with tungsten isocyanide complexes under acidic conditions. Upon calcination, the tungsten complex was transformed into its oxide, which was deposited inside the channels. This material is illustrated to be a good catalyst on the allylic oxidation of cyclohexene in the presence of hydrogen peroxide under mild conditions. In addition, this catalyst could be easily recovered after the reaction and re-used without any significant loss of its activity.
By using a diblock copolymer containing tungsten complexes as templates, tungsten-hexagonal mesoporous silicas (W-HMS) were synthesized, which could be used as a catalyst for the allylic oxidation of cyclohexene. Figure optionsDownload as PowerPoint slide
Journal: Applied Catalysis A: General - Volume 317, Issue 1, 27 January 2007, Pages 91–96