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2014 | 16 | 2 | 63-68
Tytuł artykułu

Nanocolloidal Ru/MgF2Catalyst for Hydrogenation of Chloronitrobenzene and Toluene

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The use of magnesium fluoride support for ruthenium active phase allowed obtaining new catalysts of high activities in the hydrogenation of toluene and ortho-chloronitrobenzene. Ruthenium colloid catalysts (1 wt.% of Ru) were prepared by impregnation of the support with the earlier produced polyvinylpyrrolidone (PVP)-stabilized ruthenium colloids. The performances of the colloidal catalysts and those obtained by traditional impregnation were tested in the reactions of toluene hydrogenation to methylcyclohexane and selective hydrogenation of ortho-chloronitrobenzene (o-CNB) to ortho-chloroaniline (o-CAN). It was shown that the use of chemical reduction method allows obtaining highly monodisperse ruthenium nanoparticles of 1.6–2.6 nm in size. After reduction in hydrogen at 400oC, the colloidal ruthenium nanoparticles were found to strongly interact with MgF2 surface (SMSI), which decreased the catalyst ability to hydrogen chemisorption, but despite this, the colloid catalysts showed higher activity in o-CNB hydrogenation and higher selectivity to o-CAN than the traditional ones. It is supposed that their higher activity can be a result of high dispersion of Ru in colloid catalysts and the higher selectivity can be a consequence of the lower availability of hydrogen on the surface.
Wydawca
Rocznik
Tom
16
Numer
2
Strony
63-68
Opis fizyczny
Daty
online
2014-06-26
Twórcy
  • Adam Mickiewicz University, Faculty of Chemistry, ul. Umultowska 89b, 61-614 Poznań, Poland , mariop@amu.edu.pl
  • Adam Mickiewicz University, Faculty of Chemistry, ul. Umultowska 89b, 61-614 Poznań, Poland , mardok@amu.edu.pl
  • Adam Mickiewicz University, Faculty of Chemistry, ul. Umultowska 89b, 61-614 Poznań, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_pjct-2014-0031
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