Encapsulation of iron phthalocyanine in sol–gel materials

✍ Scribed by A.B Sorokin; P Buisson; A.C Pierre

• Book ID: 104430447
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 263 KB
• Volume: 46
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/s1387-1811(01)00294-3

✦ Synopsis

Iron tetrasulfophthalocyanine (FePcS) was incorporated in sol±gel materials directly during the synthesis of hydrophobic and hydrophilic sol±gel materials by three dierent methods. The BET surface areas and pore size distributions of the prepared materials were determined from N 2 adsorption isotherms at 77 K. The structures of the gels were investigated by 29 Si NMR. The texture and the structure of the sol±gel materials was shown to depend on the preparation method. The incorporation of FePcS in the sol±gel materials was checked by diuse re¯ectance UV±VIS spectroscopy. The band broadening of the incorporated FePcS molecules suggests that the complex is incorporated in dimeric or oligomeric forms. The presence of FePcS modi®ed the structure of the gels resulting in the formation of a more polymeric, less extensively crosslinked silica gel network. The catalytic performance of these sol±gel materials containing the FePcS complex was tested in the oxidation of 2-methylnaphthalene and 2,3,6-trimethylphenol.