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Martin Steffan

Technische Universität Darmstadt

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Featured researches published by Martin Steffan.

Chemical Communications | 2008

The promoting effect of a dicyanamide based ionic liquid in the selective hydrogenation of citral

Juergen Arras; Martin Steffan; Yalda Shayeghi; Peter Claus

Conventional supported heterogeneous palladium catalysts in combination with a dicyanamide based ionic liquid are highly active with excellent selectivity in enabling the one-pot synthesis of citronellal through citral hydrogenation.

The Open Physical Chemistry Journal | 2007

Highly Dispersed Gold Particles on Polyaniline – A New Nanocatalyst for Selective Hydrogenation

Florian Klasovsky; Martin Steffan; Jürgen Arras; Jörg Radnik; Peter Claus

A new nanocatalyst which comprises gold particles (average size = (2.5±1.3) nm) supported on intrinsically conductive polyaniline (PANI) was prepared via a sol-method. This Au/PANI catalyst was used for the first time in hydrogenation of the α,β-unsaturated aldehyde citral exhibiting high activity (93% conversion) and selectivity (76%) towards the products of C=O group hydrogenation, geraniol and nerol, whereas the selectivity towards the product of the hydrogenation of the conjugated C=C bond (citronellal) is rather low (23%).

Catalysis Communications | 2009

Silica supported silver nanoparticles from a silver(I) carboxylate: Highly active catalyst for regioselective hydrogenation

Martin Steffan; Alexander Jakob; Peter Claus; Heinrich Lang

Green Chemistry | 2009

Regioselective catalytic hydrogenation of citral with ionic liquids as reaction modifiers

Jiirgen Arras; Martin Steffan; Yalda Shayeghi; Dominik Ruppert; Peter Claus

Chemical Engineering & Technology | 2007

Selective Hydrogenation of Citral in an Organic Solvent, in a Ionic Liquid, and in Substance

Martin Steffan; Martin Lucas; Armin Brandner; Mathis Wollny; Nils Oldenburg; Peter Claus

Advanced Synthesis & Catalysis | 2008

Carbon-Carbon Double Bond versus Carbonyl Group Hydrogenation: Controlling the Intramolecular Selectivity with Polyaniline-Supported Platinum Catalysts

Martin Steffan; Florian Klasovsky; Jürgen Arras; Christina Roth; Jörg Radnik; Herbert Hofmeister; Peter Claus

Journal of Physical Chemistry C | 2008

Catalytic and Mechanistic Investigation of Polyaniline Supported PtO2Nanoparticles: A Combinedin situ/operandoEPR, DRIFTS, and EXAFS Study

Florian Klasovsky; Jens Hohmeyer; Angelika Brückner; Marcus Bonifer; Jürgen Arras; Martin Steffan; Martin Lucas; Jörg Radnik; Christina Roth; Peter Claus

Chemie Ingenieur Technik | 2006