Combustion method combined with sonochemical step for synthesis of maghemite-supported catalysts for the hydrogenation of 2,4-dinitrotoluene

Maghemite particles were synthesized by using a combined combustion method and sonochemical step. Maghemite was used as carrier to prepare supported Pt and Pd catalysts after deposition via a sonochemical step. The catalysts were immediately ready to be used (metals were catalytically active) for th...

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Published inCatalysis communications Vol. 159; p. 106342
Main Authors Hajdu, Viktória, Muránszky, Gábor, Hashimoto, Masahiro, Kristály, Ferenc, Szőri, Milán, Fiser, Béla, Kónya, Zoltán, Viskolcz, Béla, Vanyorek, László
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2021
Elsevier
Subjects
Catalyst
Hydrogenation
Maghemite
Sonochemistry
Toluenediamine
Sonochemistry
Toluenediamine
Hydrogenation
Maghemite
Catalyst
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Summary:Maghemite particles were synthesized by using a combined combustion method and sonochemical step. Maghemite was used as carrier to prepare supported Pt and Pd catalysts after deposition via a sonochemical step. The catalysts were immediately ready to be used (metals were catalytically active) for the 2,4-dinitrotoluene hydrogenation to produce 2,4-toluenediamine. The most active catalysts were the Pd/maghemite and bimetallic Pd-Pt/maghemite. The catalysts were easily separable after reaction due to their magnetic properties. [Display omitted] •Application of maghemite catalyst supports.•Simplified, efficient and fast sonochemical catalyst preparation method.•Magnetic separable palladium catalysts.•High catalytic activity in hydrogenation of dinitrotoluene.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2021.106342