Abstract
Bridged-ferrocene functionalized mesoporous SBA-15 (Fc-SBA) were prepared by evaporation-induced self-assembly (EISA) of 1,1′-bis[(2-(triethoxylsilyl)ethyl)ferrocene and tetraethyl orthosilicate with polymer Pluronic P123 as a template under acid conditions. The prepared materials were characterized by N2 sorption, XRD and TEM, and the results showed the materials exhibited highly ordered 2D hexagonal pore structure, thick pore wall with the pore width of 4.66–6.58 nm. The highly ordered structure maintained even the content of the ferrocene precursor in the initial mixture is 30 mol%. The FT-IR revealed that the ferrocene bridge is preserved during the material synthesis and subsequent extraction procedure. In the reaction of phenol hydroxylation, the phenol conversion was found to be almost the same as the homogeneous ferrocene catalyst over the Fc-SBA mesoporous materials. The selectivities of catechol and hydroquinone were about 55 and 40% respectively.
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