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Synthesis of nanostructured fibrous catalyst support by templated sol-gel method

Tetyana Levchenko 1Dmytro Nasiedkin 1Igor Babich 2Leon Lefferts 2Yuri Plyuto 1

1. Institute of Surface Chemistry NAS of Ukraine, 17 General Naumov, Kyiv 03164, Ukraine
2. University of Twente, Catalytic Processes and Materials, P.O. Box 217, Enschede 7500AE, Netherlands


The aim of this work was in application of the templated sol-gel approach for the rational design of mesoporous silica coatings on woven fibre glass used as advanced catalyst support.

The sol-gel precursor was synthesised by acidic hydrolysis of Si(OC2H5)4 to which cetyltrimethylammonium bromide template was added afterwards. The initial glass fibre was dip-coated with sol-gel precursor and the resulting dry fibre material with the deposited silica coating was calcined in air at 400 ºC to complete condensation of siloxane oligomers into silica framework and to remove template molecules from the template-doped coating. In this way the apparent surface area of fibrous catalyst support was increased from 0.4 to 13.0 m2/g due to formation of pores of ~ 2.7 nm diameter. According to SEM images, the glass filaments of 6-9 μm in diameter are completely coated with mesoporous silica film and do not form the flocks.

The model Ni catalyst was synthesised by incorporation of Ni2+ species into mesoporous silica coating via ion-exchange in Ni(NH3)6(NO3)2 aqueous solution. A subsequent reduction in H2 at 400 ºC resulted in the formation of Ni nanoparticles which exhibited catalytic activity in the reaction of toluene hydrogenation to methylcyclohexane.


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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium D, by Tetyana Levchenko
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-12 15:06
Revised:   2009-06-07 00:48